Ham Radio Amplifiers Solid State

Click & Collect. Most of the older and smaller tube amplifiers have little, if any, protection circuitry. Heathkit Reflected Power Meter $40. Generally 100 Ω is a safe bet. illegal to use Amplifiers for 11 meter use in the US, and we can't sale as such. I have a very big experience in the different direction of the radio: this is amateur apparatus development. Just turn it on and operate from anywhere* Fully integrates with FlexRadio's SmartLink remote. Amateur Radio Blogs. Get the best deals on HF Ham & Amateur Radio Amplifiers. Consistent with the ham radio hobby, our KXPA100 and KPA500 amplifiers are available as Modular Kits or Factory Built. A 600 Watt homebrew Solid State Amplifier and Power Supply Amplifiers are a favourite homebrew project. QRO/QRP 3 Comments Tags: amplifier,Big gun,energy,Linear amplifier,PA,power,QRO,QRO/QRP,RF Date: 24 Apr 2012 AUTOMATIC or MANUAL SOLID STATE HF / VHF LINEAR AMPLIFIER 700 WATTS (PEP) 1. Get it as soon as Tue, Feb 11. Transmitters Ham Radio Transmitters For Sale. Solid State Design for the Radio Amateur, great book indeed, but… ouch! Prices on amazon: used from $100. Will ship, if you pay the shipping. In order to preserve signal integrity, amplifiers used as the final amplifier in an amateur radio transceiver, or as an external amplifier, are Class A or Class AB linear amplifiers. Includes QSK-5PCI solid state T/R switch, factory installed. Amplifiers have always been a niche product compared to other product lines in ham radio. NEW NAGOYA 200W HF Power Amplifier FM- AM-CW-SSB For 3-30MHz Handheld Ham Radio C $215. 00: Icom 2KL Solid State Amp & Icom IC2KLPS Power Supply $900. Fellow at a club meeting last evening said he dumped his old tube amp in favor of an Ameritron ALS-600 SOLID STATE AMP - runs about 500 to 600 watts with no tune-up etc etc. Amateur Radio Blogs AmateurRadio. Some thoughts on low cost, solid state, efficient, kilowatt-class HF linear amplifiers. 1,500W PEP SSB and CW on 160-10m. Henry Radio manufactures a broad range of solid state RF power amplifiers for many different applications. Please login to add to your wish list! Register For An Account. 3K-FA Solid State Fully Automatic Linear Amplifier, up to 1. Which can be added to the SPE or any amp for that matter with a Coupler once Flex releases new software to have Pre Distortion as a feature. #N#RM Italy KL 7405V 10 meter Linear Amplifier With Fan. A matched pair of SD1285 transistors in push-pull drive, 2 pair or MRF458 transistors in push-pull to conservatively produce 140 watts output from as little as 1/2 watt drive. • First ham radio experimental activity around 1946, using technology developed during WW2 • First QSO's on 10 GHz were about 2 miles, using klystrons and wideband FM • Later developments included Gunn diodes, multipliers, TWT's, and solid state amplifiers • As technology improved, more narrowband operation became. Grounded-grid amplifiers are relatively easy to build, are very stable in operation, and have a low input impedance. Welcome to the RM Italy Store! Would you like to log yourself in? Monthly Specials For February. Ameritron ALS-1300 Solid-State Amplifiers offer a full 1,200 watts of linear output with NO TUNING REQUIRED! These amplifiers use eight state-of-the-art RF TMOS MRF-150 FETs operating at 50 V in a double-ended push/pull parallel output configuration. The Successful Ham Radio Operator's Handbook‎ > ‎ Ham Radio Amplifiers. 1200Hz for amateur radio use for historic reasons but could easily be 2kHz or 10kHz apart if that makes the. The Emtron DX-3SP is the most technically advanced RF linear amplifier operating on all HF amateur radio bands, developed with quality, reliability, performance and price in mind. protection circuits against load mismatch, overdrive, overheat and overload. Paid: $1300. West, Toronto Ontario M3N1V7 Tel: 416-667-1000 [email protected] You may have to register before you can post: click the register link above to proceed. The UK leading Supplier and Distributor of Communications Equipment. Amplifier, FET, No Tune, Solid State Type, 1,200 W Output PEP, 160-15 meters. VINTAGE PALOMAR FC 40 Solid State Frequency Counter CB Ham Radio - $79. Ham Radio KITS - TOP PAGE - Washington Island BOOKS. Or, use the convenient search options to further refine your search. Tel: 0345 2300 599. Compare Products. The DX1200 will be coming to the market in 2020 providing a high spectral puruty 1. I went to this ham's incredible shack, took one look, and agreed to acquire. Ham Radio Basics--Jim W6LG Shows The Dipole Antenna And An Instantaneous Antenna Tuner - Duration: 13:50. ACOM 1200S | 1. 6 dB 50-4000MHz SPF5189 For FM HF VHF/UHF Ham Radio. With over 50 years in RF Servicing, his background is extensive and includes experience with solid state repair since the 70's. There is a web site where an enterprising fellow has plug-in solid-stated the GRC-9, BC-611 and BC-348 military radios, and gives schematics and theory. Please note, that the FCC does not. I dont drive the amp that hard. 8 To 30 Mhz 2020-05-05 02:39:48 Messenger M4 Early Linear Cb Ham Amplifier Mrf455 Double 2020-05-04 13:45:20. Equipment Kenwood TS 990S main HF/6M rig Kenwood TS 950SDX Kenwood TS 590SG 70th anniv HF/6M Kenwood TL 922A HF amp Ameritron ALS 1306 HF amp solid state 6-160m Yaesu FT 736R w 222 & 50 Mhz Modules Icom IC 7000 Mobile with Tarheel 100A Screwdriver Ameritron ALS-500MR 10-160 mobile hf amp TE Systems 1452G 350 w 2m amp. Amplifier, FET, No Tune, Solid State Type, 1,200 W Output PEP, 160-15 meters. Published annually by the ARRL. • The sequencer provides a visual indication of each output’s state via a series of bi-color LEDs. 123728498361. Zetagi B150R Solid State Amplifier 26 30Mhz CB Ham. 4 lbs, the Model 418 will operate from any 13. If you are looking for a no tune, solid state amp with auto band switching, this should be on your short list. Get instant bandswitching, no tuning, no warm-up, no tubes to baby and no fuss! Reliability of the ALS-1300 is ensured by using eight rugged MRF-150 power FETs. You may have to register before you can post: click the register link above to proceed. Will, KN6DV - Amplifier homebrew discussion archive. ML&S Martin Lynch & Sons, Staines-Upon-thames Surrey UK. Radio Center HK-5A Electronic Keyer $50. The Expert 1K-FA Amplifier. Browse the listings below for the latest ham radio amplifiers for sale. While the FCC and most ham radio operators will frown upon your purchase and use of an amplifier, it's a simple fact that there are thousands of people in the United States (and in other countries where it's illegal) running CB amplifiers and none of them have ever had an issue. For years, I had used a Henry Radio Tempo 2002 tube amplifier that uses a pair of no-longer-available 8874 triodes. I am looking for Yaesu FT101e or Yaesus FT101ee transceivers along with their accessories. 0 KW Solid State Fully Automatic Linear Amplifiers. Most ham radio systems use linear amplifiers with vacuum tubes that can boost the RF transmission amplification by 10 to 20 times in the one to two kilowatt range. In order to preserve signal integrity, amplifiers used as the final amplifier in an amateur radio transceiver, or as an external amplifier, are Class A or Class AB linear amplifiers. The AN/GRC-213 is the vehicular version of the AN/PRC-104 Radio Set which is mounted on the AM-7152/GRC-213 Audio Amplifier-Power conditioner that operates from 24VDC. COMES WITH POWER SUPPLY AND AUTO BAND CHANGING CABLE FOR ICOM RADIOS. Henry Radio manufactures a broad range of solid state RF power amplifiers for many different applications. Learn more > What's happening in the TWiT house Listen to Ham Nation on Wednesdays at 6 PM PST to keep up on the latest in ham radio! Learn more > Additional Sponsorships. io B26-PA RF2K+ and RF2K-S Legal limit LDMOS Solid State Amp kit for Ham Radio from RF-Kit Every HAM OP is welcome - so please show us your call sign if you like to join ! We will ask for your call sign by email if you not have placed into your account. Weight: Approximately 25kg. This forum is only for discussions relating to Ham Radio Hardware Only. Ham radio is NOT intended to be broadcast band FM quality! If the band is "dead", then no amount of power, legal or not will help you! Depending on the "calibration" of the S meter many times a station's audio (voice) can be heard well and 100% understandable even though he is "burried" in the noise and the S meter is reading S1 to S3 or not. Here, you'll find links for high power RF linear amplifier covering hf-vhf-uhf. Jim W6LG 65,711 views. MFJ Enterprises Inc,Ameritron,Hy-Gain,Hygain,Cushcraft,Vectronics,Mirage,MFJ,MFJ Enterprises,Antenna,Radio,Ham Radio,Amateur Radio,Tuner,Analyzer,Starkville,Amplifier. Quiet Variable-Speed Cooling System. The ones I have seen were multiple HF solid-state amplifiers of the same type and model. Timothy Staker April 27 at 12:02 AM. I'd probably now recommend using a design based on much cheaper MOSFET devices. This mix of fun, public service, friendship and convenience is the main feature of amateur radio. For exams given July 1, 2018 to June 30, 2022: Review questions chapter-by-chapter or by subelement. 95* *After Coupons & Promotions. MegaWatt S-400-12x 36 Amps 430 Watts 9. It is also a great accessory for geeky hobbyists who want more freedom to transmit across the airwaves and meet other hams around the world. Get it as soon as Tue, Feb 11. 0 out of 5 stars 3 LNA RF Amplifier Signal Receiver 0. Amateur Radio Hardware Threads / Posts Last Post. click a picture to enlarge. 5w drive for full output aprox. Amateur radio power amplifiers generate. Other Outstanding Features. Nitro 700 Base Linear Amplifier Solid State Ham Radio : $320 You are offerding on UsedNitro 700 Base Linear Amplifier Solid State Ham Radio. The Ameritron ALS-1306 is 1200-watt nominal output, 160 through 6-meter amateur radio band, solid-state amplifier. 1972 : Trio-Kenwood Communications introduces the TS-515. Title: Remote Operating for Amateur Radio - Ten Things to Know Author: Mark. Operation is possible for all bands from 160 to 10 meters and without interruption from 1. — [email protected] The KPA1500 solid-state amplifier won't take over your entire desktop: it's just 4. My Ham Radio Interests. To build the largest and most complete Amateur Radio community site on the Internet. Audio amp schematics etc. HRO Discount Price: $2,499. In addition, specific models mentioned in the RF linear amplifier forums, Like. Some components by Richard L. LCD Display and Front Panel LEDs. A linear amplifier is an electronic circuit whose output is proportional to its input, but capable of delivering more power into a load. 8 – 30 MHz All-Mode All-Band Electronic switch PTT input Watt Meter 6 Low-pass filter manual or automatic. The main requirements was: power up to 500-600 W, momentary preparedness to work, minimum heating and noise. hf amp, 1kw, (1) 3-500z tubes, domestic 120vac $1,899. T/R-switched amplifiers have user friendly controls are mounted on front panel with all RF and DC cables attached out of sight on rear panel. export CB and/or 10 meter radios only. In the early days of SGC communications, their SG-711 transceivers were sold to the state “flying fuzz”…. Except…well, any good. After pushing the ON and POWER buttons, the am - plifier is ready to go. 5 KW output, light weight (8kg) high power versatile amplifier. An amplifier will amplify all signals within its passband, and so if you had a wideband amplifier that amplifies all signals from Top Band (around 1. Includes external IC-2KLPS power supply unit. The amp puts out well in excess of 1000 watts, but I always run it at 1KW as recommended by Icom. >70% 110-130 V AC with min. It uses a single dual-LDMOS power device for reliability, and has an internal highly reliable low-noise switching power supply, in order to reduce the overall weight. 00: Heathkit HD141 RF Signal Generator $50. Timothy Staker April 27 at 12:02 AM. Ampliers Solid state HF - Hamradioguide. Some components by Richard L. net provides recognition and enjoyment to the people who use, contribute, and build the site. Icom America and Boy Scouts of America have forged long-standing relationship. Sorry I posted anything about a 300 watt solid state mobile amplifier made in USA. 10 new & refurbished from £144. "Introduction to Radio Frequency Design" by Wes Hayward, W7ZOI. Alinco's latest Digital Power Supply DM-30 , is an affordable switching power supply packs a lot of features. Prices confirmed for linear amplifiers currently in stock. The large black unit in the right of the picture is my home made KW dummy load, consisting of 6 large 300 ohm non-inductive resistors inside a pair of one gallon cans carefully soldered together and filled with transformer oil for cooling. Two versions available: One amplifier with built in automatic antenna tuner, the other without the antenna tuner. 8MHz - 50MHz power amplifier with additional capability at 472kHz. • An integrated circuit is a device that combines several components into one package (generally including transistors). A low cost 600 watt ultra-linear amplifier for 40, 20, 17, 15, 12, and 10m This compact little amplifier is the brain-child of Pat Murdoch, ZL1AXB, in Auckland, New Zealand. This amplifier has been driven with solid-state Hamtronics and Motorola exciters to this power level with a 4-cavity WACOM duplexer (93 dB isolation) into a single duplex antenna with NO desense. Amplifier has scratches/marks and some surface rust in spots. 2020 popular Hf Linear Amplifier trends in Consumer Electronics, Electronic Components & Supplies, Tools, Cellphones & Telecommunications with Hf Linear Amplifier and Hf Linear Amplifier. Linear amplifiers are most often used in amateur radio, laboratory equipment, and audio equipment. The amplifier's. 95* *After Coupons & Promotions. “It is by far the most impres-sive piece of amateur radio gear I own and the one I am most proud of. it seems that what I posted is too hard for anyone to understand. 75" d (19 x 43 x 38 cm). Ameritron ALS-1300 Solid-State Amplifiers offer a full 1,200 watts of linear output with NO TUNING REQUIRED! These amplifiers use eight state-of-the-art RF TMOS MRF-150 FETs operating at 50 V in a double-ended push/pull parallel output configuration. A "portal" that hams think of as the first place to go for information, to exchange ideas, and be part of what’s happening with ham radio on the Internet. Never buy an amateur radio transceiver, transmitter or power amplifier (new or used) from someone who is not a licensed amateur radio operator in good standing, or an authorized dealer! In fact, be especially wary if they do not ask for proof that you are a licensed ham in good standing yourself!. As a ham radio operator, I tended to gravitate towards transistors. help Easily extend the communication range of your handheld radio; Use the AMP-V25 to create: a mobile radio with a vehicle mounted antenna, a high power field radio with a field deployed antenna, a home/base radio attached to a mast. COMES WITH POWER SUPPLY AND AUTO BAND CHANGING CABLE FOR ICOM RADIOS. Please see photos for condition. 436 MHz D4C/B beacon. They’re relatively economical to manufacture, tolerant of abuse, and have some leeway to match antennas that aren’t exactly resonant. Multiband HF Projects - Amplifiers 18 dB LT1253 DDS Amplifier by K8IQY This 18 dB gain amplifier was built Manhattan-style to evaluate the Linear Technology LT1253 dual video amplifier as a candidate output amplifier for DDS systems employing the Analog Devices AD9850 and similar devices. Customer Review Price: Low to High Price: High to Low Select Category. This Video was taken from the W2SZ VHF Multi-Multi for the ARRL Sept 2011 VHF Contest. This Blog is mainly dedicated to Amateur Radio (Ham radio) and. The main category is Amateur linear amplifiers that is about HF amplifiers for ham radio use. Shop the top 25 most popular Hf Linear Amplifier at the best prices!. Generally 100 Ω is a safe bet. Amateur Radio Blogs. FOR SALE: AMERITRON ALS-1306 HF AMP. " The laptop screen, and the small delay interrupts the feeling, but the "control heads" are bringing it back. I see a lot of postings about tube amplifiers, but > no solid state. 133,99 Excl. Welcome to the CB radio Amplifiers page. Most of the older and smaller tube amplifiers have little, if any, protection circuitry. Manufacturers of Ham Radio RF Power Amplifiers category is a curation of 59 web resources on , Mizuho products, Comtechpst. The ones I have seen were multiple HF solid-state amplifiers of the same type and model. 2 KW Solid State Fully Automatic Linear Amplifier. Description. Buy SPE Expert 1. Tel: 0345 2300 599. Ham Radio Basics--Jim W6LG Shows The Dipole Antenna And An Instantaneous Antenna Tuner - Duration: 13:50. Prices confirmed for linear amplifiers currently in stock. These were explored in the Motorola applications handbook years ago, this company sells the splitter-combiner modules, and kits of parts for the amplifiers used in that publication :. 25 Meter Band Linear Amp Amplifier Amp C My Other Ham $499. Amplifier homebrewing. For sale: Ameritron ALS-500M Linear Amplifier for CB Radio/Ham Radio solid state no tune does 450 watts PEP comes with an Ameritron 75 Amp Switching Power Supply(Bought Nov 2018) both work great!. Possible to customise many options. I buy and restore old ham radios for my private collection. To increase the signal at the receiver by just one S-unit or one bar on a signal strength meter costs 6dB, or a quadrupling of power. Browse the listings below for the latest ham radio amplifiers for sale. Best of all, they are low wattage and battery powered, no need to plug them in a wall, and the MOST important. The magazine title, 73, means "best regards. 5kg (12lbs) solid state 1kW linear amplifier for HF and 6 meter bands. The y started making germanium transistor radios sometime mid to late 50's and they all sound really great, there is ALOT of volume, they ring clear at low volume but breakup just like a solid state amp at around 6. Every project has to start somewhere. 1200Watt HF+6m SOLID STATE AMP - 220Vac, US. B26-PA RF2K5 LDMOS. (Amplifier ALC not normally used with broadband, solid state transceivers. Ham Radio Videos. FREE Shipping by Amazon. 4 lbs, the Model 418 will operate from any 13. It is shipped with a universal power supply that operates from 85 to 260 Volts AC, 50 or 60 Hz. HF SSB Ham Radio Amplifiers. Ham Radio Power Supply. The Solid-State Power Amplifier The solid-state power amplifiers became widespread around the 1970’s and the 1980’s. Thanks for loooking!!. Amplifier, FET, No Tune, Solid State Type, 1,200 W Output PEP, 160-15 meters. Type: Linear Amplifier. Review Progress. YAHOO and GMAIL email user should check SPAM. RM Italy BLA 350 Amateur HF Solid State Amplifier (230 Volts) #N#RM Italy BLA 350 Amateur HF Solid State Amplifier (110 Volts) #N#RM Italy HLA 150V Plus Professional Linear Amplifier With Fans. ELECRAFT KXPA100-K HF Amplifier - Modular Kit. Buy SPE Expert 1. The main category is Amateur linear amplifiers that is about HF amplifiers for ham radio use. Includes external IC-2KLPS power supply unit. Automatic antenna tuner built-in. Shop today!. Henry Radio manufactures a broad range of solid state RF power amplifiers for many different applications. 10 new & refurbished from £144. Product Description Instant use without setupOver 300 Watts Key-down. ) HV/LV Tap Change: Internal relay standard. To build the largest and most complete Amateur Radio community site on the Internet. Icom America and Boy Scouts of America have forged long-standing relationship. com with top-selling Hf Linear Amplifier brands. 5 ~ 55 MHz HVLA700 Series. They have come out with some solid-state amplifiers that put out 1200 watts to 1500 watts. Dimensions: L 38cm, H 18. Often, many operators would give a description of the transmitter as a pair of 807's or three 6146's or for higher powers 813's could generate the legal limit. — [email protected] Browse the listings below for the latest ham radio amplifiers for sale. [email protected] So to achieve the desired 100 Watts continuous wave output, Kenwood's engineers turned to vacuum tubes -- a 12BY7 driver and a pair of S2001A (6146B equivalent) final amplifiers. High Power Solid State Amplifier - W6KAN It is during these moments that my mind starts wondering toward ham radio, or my. View as Grid List. LATEST MODEL WITH 3 FANS. Instant bandswitching, no tuning, no warm up. [3] Large vacuum-tube linear amplifiers generally rely on one or more vacuum tubes supplied by a very high voltage power supply to convert large amounts of electrical energy into radio frequency energy. io B26-PA RF2K+ and RF2K-S Legal limit LDMOS Solid State Amp kit for Ham Radio from RF-Kit Every HAM OP is welcome - so please show us your call sign if you like to join ! We will ask for your call sign by email if you not have placed into your account. Ability to add the automatic antenna tuner at a later. Amateur Radio's Middle Path Amateur Radio operation in the US is constituted as a radio a small solid-state or single-tube amplifier will boost your 100-W barefoot signal to. Solid State Amplifiers: Made with transistors, these electronics are said to be more versatile, smaller, lighter and more reliable. As a ham radio operator, I tended to gravitate towards transistors. 5-54 MHz 1200 Watts PEP Output, Instant Automatic band switching, no tuning, no warm-up, SWR protected. Dimensions, including amplifier, power supply, tuner and controller, are only 350(H) x 269(W) x 378(D)mm* And, because the controller is detachable, the IC-PW1 can be installed almost anywhere in your shack. For years friends have told me how much better that the tube radios and amplifiers sound compared to transistor equipment. The main category is Amateur linear amplifiers that is about HF amplifiers for ham radio use. Mini HF Power Amplifier For QRP Ham Radio YASEU FT-817 ICOM IC-703 Elecraft KX3 Categorie: Ham Radio Amplifiers: £175. (Click on images to see full screen) Drake L-4B modified to a single 3CX1200A7, blower, and Peter Dahl tx. 95 each All information, images, and documents on this website are the sole property of Ameritron Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from Ameritron. 95 Read more ACOM 600S | 600w Solid State Linear Amplifier | LAMCO Barnsley £ 2,399. 19-23 This is not a step-by-step construction article, but a springboard from which to build a 35-pound kilowatt solid-state amplifier. The receiver front ends were solid state with no circuitry to ground the antenna and when the aircraft would fly in cold weather there would be a tremendous static build up on the antenna circuit. MegaWatt S-400-12x 36 Amps 430 Watts 9. All Elecraft linear amplifiers. All controls and meters, available anywhere. The FTH-2005 is the commercial version of a Yaesu FT23R from about 1980. further power reduction will occur, of course, if a serious SWR anomaly exists. In essence this motor start circuit can be used to control the application of power, which for the LDMOS amp is 48 VDC at 30 amps. This section has to do with audio amplifiers. Amateur radio HF(+) solid-state linear amplifiers having ALC fitted are Ameritron ALS-600 (HF) & ALS-1300 (HF) & also RM Italy BLA-600 (HF/6m) & BLA-1200 (HF/6m). At that time Henry was one of the leading suppliers of Amateur Radio Linear Amplifiers. FREE Shipping by Amazon. Collins Items Sort by: Sort by Featured Items Newest Items Bestselling Alphabetical: A to Z Alphabetical: Z to A Avg. I bought a Henry Classic 3KD when I was in California. Transceivers and Amplifiers helps you make that decision. A "portal" that hams think of as the first place to go for information, to exchange ideas, and be part of what’s happening with ham radio on the Internet. 97 New HYS Ham HF Power AMP Amplifier 3-30MHz with Fan For Handheld walkie Talkie. A "portal" that hams think of as the first place to go for information, to exchange ideas, and be part of what’s happening with ham radio on the Internet. Sold as is. At that time Henry was one of the leading suppliers of Amateur Radio Linear Amplifiers. 2 Meters 144 148 Mhz Amplifier Mrf300 500w. That noise interferes with your ability to hear the other station’s signal. Amateur radio kits for simple radio construction products. Which can be added to the SPE or any amp for that matter with a Coupler once Flex releases new software to have Pre Distortion as a feature. This link is listed in our web site directory since Thursday Aug 24 2006, and till today " 11 KW Linear amplifier by I0JX " has been followed for a total of 24006 times. Recently sold used. It uses a PAIR of dual-LDMOS BLF188XR power devices for reliability, and has full high speed QSK capability using a diode switching circuit. So please accept my meager attempt for now. Inventory changes daily so be sure to check back here often for the best selection of ham radio amplifiers, amplifier kits, and parts available at auction prices!. 00: Icom 2KL Solid State Amp & Icom IC2KLPS Power Supply $900. Only 1 left. com is one of the longest running amateur radio blogs out there. 95 each All information, images, and documents on this website are the sole property of Ameritron Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from Ameritron. • An integrated circuit is a device that combines several components into one package (generally including transistors). 2kW output with a frequency range of 1. A homebrew Single Sideband transmitter A photo-essay for the geeks out there I got my ham radio license in high school, in 1969, and it took me no time to cobble together a single-tube CW transmitter and start communicating with radio amateurs around the world. ) Tune or adjust the amplifier if necessary. The ALS-1306 uses eight 50-volt, conservatively rated, linear RF MOSFETs. RF-KIT RF2K-S Amplifier - Legal Limit Solid State PA. 2kW output with a frequency range of 1. Here, you'll find links for high power RF linear amplifier covering hf-vhf-uhf. Amplifier 5: A good, clean LM386 Audio Amplifier. This page will show you how to build your own 100 Watt linear amplifier based on the kits that can be found on the various internet auction sites. 5kg (12lbs) solid state 1kW linear amplifier for HF and 6 meter bands. Icom d-Star Radio Repeaters. lethal high voltages! Extreme safety precautions. They have come out with some solid-state amplifiers that put out 1200 watts to 1500 watts. T Reviews – Amplifiers: RF Power – HF HF6M t – Amateur Radio (Ham Radio) Community. In the early days of SGC communications, their SG-711 transceivers were sold to the state “flying fuzz”…. 6 & 2 meter LDMOS 1KW Linear Amplifiers (click on any photo for a larger view) My interest in 2 meter EME made it obvious to me that I needed a bit more power than the usual 100 watts available from most radios on the market. high overall efficiency typ. We would prefer a kit of some sort that I could build for him. The ones I have seen were multiple HF solid-state amplifiers of the same type and model. Brand: Zetagi. Like its vacuum tube cousin, the solid -state power amplifier mimicked the evolution of related technologies. HamCity has more than 30 years of experience in the amateur radio equipment business! Please visit us today for all your ham radio needs!. We can explain amateur radio linear amplifiers to you. Suitable for powering HAM or CB radio equipment. Popular modes of operation include speaking over amplitude modulation (AM), and communicating using Morse code through continuous wave (CW) radiotelegraphy. High Power Solid State Amplifier – W6KAN It is during these moments that my mind starts wondering toward ham radio, or my. Many an Amateur radio operator went on the air with a transmitter built almost entirely from old TV parts. Why in RF is connecting a 500 ohm load i. QUESTION: What is a characteristic of a grounded-grid amplifier? (E7B18). Vintage frequency counter. And unlike some solid state amplifiers, if you forget to turn the auto-tuner on but the amplifier encounters an SWR somewhat over 2:1, the VL-1000 doesn't turn itself off! Instead, it switches to low power (500 W) first, to let you try to make the contact. In addition to TYT and Baofeng radios, Ham World, Inc. If this is your first visit, be sure to check out the FAQ by clicking the link above. And if you decide to take that next step, it helps you decide on whether to buy an older tube amplifier or modern solid-state amplifier. "Introduction to Radio Frequency Design" by Wes Hayward, W7ZOI. Icom America and Boy Scouts of America have forged long-standing relationship. VINTAGE PALOMAR FC 40 Solid State Frequency Counter CB Ham Radio - $79. 8VDC (+/- 15%), 20 Amp power source. Designed to interface with the new TEN-TEC Model 539 QRP Transceiver, the Model 418 amplifier can be easily connected to most low power transmitter designs (1 to 20 Watts). Dan's Small Parts (for QRP) on-line catalog. ACOM 1200S | 1. Legal-limit solid state amps compared With both Elecraft and Flex now adding solid state 1500 watt amplifiers to their line-up I thought it would be interesting to compare some of their main features with each other and with two other amps. That noise interferes with your ability to hear the other station’s signal. The main category is Amateur linear amplifiers that is about HF amplifiers for ham radio use. Also, it has a friendly price. You may have to register before you can post: click the register link above to proceed. Some thoughts on low cost, solid state, efficient, kilowatt-class HF linear amplifiers. 8-72MHz for QRP FT-817, KX2, KX3, X5105. The amp puts out well in excess of 1000 watts, but I always run it at 1KW as recommended by Icom. com in a single category. Icom America and Boy Scouts of America have forged long-standing relationship. At that time Henry was one of the leading suppliers of Amateur Radio Linear Amplifiers. Prometheus is the result of 10,000 hours of research and development over a five year period, offering serious radio amateurs unmatched performance and reliability. 4 KW HF LINEAR AMPLIFIER with GU-78B,SV8JE: 6M / 4M solid state wideband amplifiers 1. Solid State Power Amps. SPE Expert Linear Amplifiers LAMCO Barnsley 5 Doncaster Road, Barnsley, South Yorkshire , Call 01226 361700 My favourite HAM store in the world icom kenwood. There are Solid State RF Amplifiers for Amateur Radio and they have the proper RF Bandpass circuitry, require hard Keying, the RF Output is either 600 W PEP or 1200 W PEP depending on what is purchased for your station or mobile set up. I have an immaculate as new Mercury III 1300W solid state amp, 160-6 meters with full output in all bands, RF Band sensing so it follows the radio automatic, SWR protection and many safety features. near end of this page. 2,3, Same with vacume plate tuner and turns counter. excellent linearity with high spectral purity. Jim Potter's page. 123728498361. Inventory changes daily so be sure to check back here often for the best selection of ham radio amplifiers, amplifier kits, and parts available at auction prices!. Published by Prentice-Hall. It is great to see amps focusing on providing clean IMD "free" signals. 00: Heathkit HD141 RF Signal Generator $50. Solid State Power Amps. Review: The SPE Expert 1K-FA Solid-State HF/50 MHz 1-KW Power Amplifier Phil Salas – AD5X A new amplifier introduced at Dayton this year is the Expert 1K-FA amplifier from SPE in Rome, Italy. But an opportunity came when rigs became all solid-state. The 4510 requires a nominal 12 Volt DC, 600 mA power source. ALS-606S AMPLIFIER, HF+6M, 600W, SOLID STATE,W/SWITCHING PS. With these types of amplifiers you have a smaller and lighter component, plus there are no tubes. #N#RM Italy KL 7405V 10 meter Linear Amplifier With Fan. JUMA PA1000 is a ultra light weight only 5. Find Amateur Radio Accessories - Power supplies, cables, antenna analyzers, aplifiers, coax switches and so much more for your rig at GPSCentral. Ten-Tec Amateur Radio Products. Be prepared and able to communicate in case of emergency with the largest selection at eBay. net provides recognition and enjoyment to the people who use, contribute, and build the site. 3K-FA Solid State Fully Automatic Linear Amplifier, up to 1. Some thoughts on low cost, solid state, efficient, kilowatt-class HF linear amplifiers. Amplifier 5: A good, clean LM386 Audio Amplifier. As a ham radio operator, I tended to gravitate towards transistors. Frequency - 1. i can't remember the name of the thread, but i did find this article in 73 magazine from may 1964. Amateur radio HF(+) solid-state linear amplifiers having ALC fitted are Ameritron ALS-600 (HF) & ALS-1300 (HF) & also RM Italy BLA-600 (HF/6m) & BLA-1200 (HF/6m). The stock connection to the radio was a kluge, requiring the user plug a short cable into an accessory band crystal socket. Ham Radio Amplifiers, Ham, Amateur Radio, Radio Communication, Consumer Electronics. Astron RS-20M 12 volt DC regulated power supply with volt and amp meters. This Video was taken from the W2SZ VHF Multi-Multi for the ARRL Sept 2011 VHF Contest. Good operating practice is to use as little power as necessary to maintain solid contact during a QSO. This amp features two rugged 572B final tubes and operates 3. Amplifier with integrated 180-260V power supply (also usable with 100-130V with lower output) rugged solid state manufacturing. This section has to do with audio amplifiers. 00: Heathkit HD141 RF Signal Generator $50. 5 and 28-30 MHz. AN AMERITRON ALS-1306 SOLID STATE AMP FOR SALE. It has a built in automatic antenna tuner, automatic protection circuits and a big and bright display for monitoring the amplifier status. >70% 110-130 V AC with min. Shop the top 25 most popular Hf Linear Amplifier at the best prices!. It’ll definitely satisfy you due to its quality and the available features. They’re relatively economical to manufacture, tolerant of abuse, and have some leeway to match antennas that aren’t exactly resonant. Ameritron HF+6 1200W Solid State Amplifier 1. Ham radio is NOT intended to be broadcast band FM quality! If the band is "dead", then no amount of power, legal or not will help you! Depending on the "calibration" of the S meter many times a station's audio (voice) can be heard well and 100% understandable even though he is "burried" in the noise and the S meter is reading S1 to S3 or not. This Group is for Ham Radio Items and Parts for sale and items wanted only. If this is your first visit, be sure to check out the FAQ by clicking the link above. They can have either vacuum tubes or use solid state technology. ML&S Martin Lynch & Sons, Staines-Upon-thames Surrey UK. This section has to do with audio amplifiers. Since unlike most Ham I can actually use a soldering iron and can read and understand the ARRL Handbook I could add most of this to any decent solid state amp on the market. Tubes versus Solid State. 5 to 15 Volts Adjustable Ham CB Radio. Distributor of Bird Technologies RF measurement equipment. 98 !! That's in my very humble opinion the best argument in favor of. With the radio only, the SWR is 1. Please see photos for condition. REASON FOR SELLING: I HAVE AN. Linear amplifiers are most often used in amateur radio, laboratory equipment, and audio equipment. At that time Henry was one of the leading suppliers of Amateur Radio Linear Amplifiers. 5-54 MHz solid state near legal limit FET no-tune Amplifier -- get 1200 Watts PEP output on all bands, including 6-Meters. TOF Amplifier Tuning Aid "Incorrectly" in the context below means for linear, non-splattering, service. Amplifiers Solid State HF. So under normal operating conditions, by P = R * I^2, there would be 3. Learning to work with. Will ship, if you pay the shipping. This Group is for Ham Radio Items and Parts for sale and items wanted only. Like its vacuum tube cousin, the solid -state power amplifier mimicked the evolution of related technologies. Full power, full duty specification that uses LDMOS for the final. Often, many operators would give a description of the transmitter as a pair of 807's or three 6146's or for higher powers 813's could generate the legal limit. Amplifier with integrated 180-260V power supply (also usable with 100-130V with lower output) rugged solid state manufacturing. Problem is I know very very little about RF stuff but I can follow instructions rather well, so a kit would be great. COMES WITH POWER SUPPLY AND AUTO BAND CHANGING CABLE FOR ICOM RADIOS. Alinco's latest Digital Power Supply DM-30 , is an affordable switching power supply packs a lot of features. Amateur radio accessories Professional audio equipment such as microphones, mixers and amplifiers If you have a piece of solid state electronics equipment not listed here and are curious if we would work on it, please contact us with details !. Solid State Compact HF 300W Linear Amplifier. Here's a short list of amps that may meet your contest needs. Sixteen transistor mobile amplifier. Devoted to the Yaesu FL-7000 HF Amplifier in the repair of audio equipment both Solid State and Tube, old. Best of all, they are low wattage and battery powered, no need to plug them in a wall, and the MOST important. Hey all, my father is getting into ham radio. Back when radio kits were easy to build using large parts guided by well written construction manuals. 100% Canadian. 5kW solid state wideband 6M / 4M amplifiers,availables: Amplificatore a stato solido per i 144 Mhz, IW2HKW: 4CX250B valve supplies about 400 W in 2 meters band 23cm Linear Amplifier with water-cooled GS-15b, DK9IP: 50 mhz amplifier with 3-500Z by G0MJW: 50Watts 144MHz FM Power Amplifier, M0UKD for 144. SO2R with one amp. So to achieve the desired 100 Watts continuous wave output, Kenwood's engineers turned to vacuum tubes -- a 12BY7 driver and a pair of S2001A (6146B equivalent) final amplifiers. Jameco in Belmont, CA mostly solid state parts Dave Hockaday's parts for sale: tubes, xfmrs etc. High Power Solid State Amplifier – W6KAN It is during these moments that my mind starts wondering toward ham radio, or my. FOR SALE: AMERITRON ALS-1306 HF AMP. BLA350 PLUS. If this exceeds the solid-state amp-control output of your radio, you can either build a higher voltage/current switching circuit into the QSK switch or use an external transceiver/amp interface available from several different sources. This Group is for Ham Radio Items and Parts for sale and items wanted only. Tubes versus Solid State. I went to this ham's incredible shack, took one look, and agreed to acquire. Ham Radio and Amateur Radio online equipment sales. This section has to do with audio amplifiers. Jim Romelfanger, K9ZZ was the editor for over 30 years until his death December 2001, and then Ken Ebneter, K9EN continued as editor/publisher until 2009. You may have to register before you can post: click the register link above to proceed. It uses two FET devices, and uses a very inexpensive 50V/50A surplus switching power supply. Ameritron’s ALS-600S is a 600W, solid-state linear amplifier that has been around for nearly two decades. Amplifier, FET, No Tune, Solid State Type, 1,200 W Output PEP, 160-15 meters. 4335 Steeles Ave. OM Power OM-2002+ - Heavy Duty 2 kW, 144 MHz Solid State Amplifier. Provider of a trunking two-way radio repeater service for Los Angeles / Orange County radio communication. Dishtronix - High power, solid state RF amplifiers and accessories, amateur radio power meters and Prometheus RF power amplifier manufacturer [ Hits: 1246 | Votes: 1 | Rating: 10 ] Empower RF Systems - We offer a large selection of standard and custom High Power RF and Microwave amplifiers for broadband, general communication, matched band, and. ) Tune or adjust the amplifier if necessary. Linear Amp have announced the launch of the GEMINI, an all new linear amplifier range. The DX1200 will be coming to the market in 2020 providing a high spectral puruty 1. MegaWatt® S-400-12x 36 Amps 430 Watts 9. Or, use the convenient search options to further refine your search. Many hams would relate stories of solid state amps burning up when just a small mistakes was made and so it was very hard to convince almost any Ham to buy a solid state amp when tube amplifiers were so much more reliable. FOR SALE - Central Massachusetts - Amateur radio HF amplifier. Ameritron ALS-1300 Solid-State Amplifiers offer a full 1,200 watts of linear output with NO TUNING REQUIRED! These amplifiers use eight state-of-the-art RF TMOS MRF-150 FETs operating at 50 V in a double-ended push/pull parallel output configuration. Solid State Amplifiers. Frequency - 1. Ham Radio Ads from Facebook Group Page. So to achieve the desired 100 Watts continuous wave output, Kenwood's engineers turned to vacuum tubes -- a 12BY7 driver and a pair of S2001A (6146B equivalent) final amplifiers. The stock connection to the radio was a kluge, requiring the user plug a short cable into an accessory band crystal socket. Unit is broadbanded and covers from 1. KENWOOD amateur radio products are sold world-wide, building on a reputation for outstanding audio quality both on transmit and receive - since 1955. Remove This Item. I bought a Henry Classic 3KD when I was in California. The Solid-State Power Amplifier The solid-state power amplifiers became widespread around the 1970’s and the 1980’s. Your antenna MUST be rated to accept the RF power. Paid: $1300. The ones I have seen were multiple HF solid-state amplifiers of the same type and model. net provides recognition and enjoyment to the people who use, contribute, and build the site. SPE Amplifiers products online from ML&S Martin Lynch & Sons. Uniden Handheld Scanner. My Ham Radio Interests. Most ham radio systems use linear amplifiers with vacuum tubes that can boost the RF transmission amplification by 10 to 20 times in the one to two kilowatt range. Will, KN6DV - Amplifier homebrew discussion archive. Amplifiers - operational hints and tips. Select All: 6. illegal to use Amplifiers for 11 meter use in the US, and we can't sale as such. We have many models ranging from 1. High Power Solid State Amplifier - W6KAN It is during these moments that my mind starts wondering toward ham radio, or my. Many are replicas of vintrage old school transmitters and receivers from the Novice Radio era of late 1940's through the 1960's. HF SSB Ham Radio Amplifiers. Jim Potter's page. The main category is Amateur linear amplifiers that is about HF amplifiers for ham radio use. I have an immaculate as new Mercury III 1300W solid state amp, 160-6 meters with full output in all bands, RF Band sensing so it follows the radio automatic, SWR protection and many safety features. A super rare oldie but a goodie. 5-54 MHz 1200 Watts PEP Output, Instant Automatic band switching, no tuning, no warm-up, SWR protected. Please see photos for condition. CollegeARC has been established to provide a way for college, university, and all other higher education schools with a student club interested in amateur radio (ham radio) to interact with one another online. This Blog is mainly dedicated to Amateur Radio (Ham radio) and. Well, maybe. It's not that I would absolutely need one! I own an old National Radio NCL-2000 tube-type amplifier, that still works very well. SPE Expert 1. That noise interferes with your ability to hear the other station’s signal. Possible to customise many options. I see a lot of postings about tube amplifiers, but. Going back in time and looking at RF amplifiers like the old dependable Heathkit SB200 or the SB220, the only protection they had were fuses in the AC primary lines. 45W HF Power Amplifier For YASEU FT-817 ICOM IC-703 Elecraft KX3 QRP Ham Radio 4. nections to the radio equipment are iso-lated from the microcontroller side by the use of optical couplers. My 160 station consists of a solid-state homebrew amplifier with 16 MRF-150's, an AL1200, an 8877 amplifier and either an FT1000D or an Orion. Free delivery and returns on eBay Plus items for Plus members. Just turn it on and operate from anywhere* Fully integrates with FlexRadio's SmartLink remote. Shop the top 25 most popular Hf Linear Amplifier at the best prices!. This amp could also have about 200w more watts total power than the SPE. At that time Henry was one of the leading suppliers of Amateur Radio Linear Amplifiers. The main category is Amateur linear amplifiers that is about HF amplifiers for ham radio use. FOR SALE: AMERITRON ALS-1306 HF AMP. We have many models ranging from 1. Amateur Radio Blogs AmateurRadio. Manufacturer of solid state RF power amplifiers. Current Stock Status At These Ham Radio Outlet Locations. CABLE X-PERTS, INC. A Compact 1-kW 2-50 MHz Solid-State Amplifier QEX July 1990, pp. An amplifier will amplify all signals within its passband, and so if you had a wideband amplifier that amplifies all signals from Top Band (around 1. AMPLIFIER RESEARCH 888. DIY KITS 45W SSB linear power amplifier for transceiver HF radio shortwave HAM For ssb, AM linear power amplifier, CW, FM power amplifier, And the most basic signal amplification expansion. Ability to add the automatic antenna tuner at a later. All Elecraft linear amplifiers. This mix of fun, public service, friendship and convenience is the main feature of amateur radio. Currently in use on my packet station but Im getting ready to discontinue packet. Linear amplifiers are most often used in amateur radio, laboratory equipment, and audio equipment. - coax and more. A "portal" that hams think of as the first place to go for information, to exchange ideas, and be part of what’s happening with ham radio on the Internet. In the case shown, the emitter resistors were 39 Ω. Amplifier with integrated 180-260V power supply (also usable with 100-130V with lower output) rugged solid state manufacturing. New SPE EXPERT 1. Prices for linear amps are quite low in USA due to the constantly growing competition. Learn more > What's happening in the TWiT house Listen to Ham Nation on Wednesdays at 6 PM PST to keep up on the latest in ham radio! Learn more > Additional Sponsorships. This is now a 20-year old design and BLW96 and scare and expensive. I'd probably now recommend using a design based on much cheaper MOSFET devices. Prices confirmed for linear amplifiers currently in stock. We have many models ranging from 1. I have an immaculate as new Mercury III 1300W solid state amp, 160-6 meters with full output in all bands, RF Band sensing so it follows the radio automatic, SWR protection and many safety features. Collins Items Sort by: Sort by Featured Items Newest Items Bestselling Alphabetical: A to Z Alphabetical: Z to A Avg. 5 ~ 55 MHz HVLA700 Series. So consider the biggest bargain in top brand 4 KW CW output linear amplifiers. Welcome to the RF linear amplifier page. • An integrated circuit is a device that combines several components into one package (generally including transistors). ACOM 1200S | 1. Or, use the convenient search options to further refine your search. 73 Magazine (also known as 73 Amateur Radio Today) (OCLC 22239204) was a United States-based amateur radio magazine that was published from 1960 to 2003. 5kW solid state wideband 6M / 4M amplifiers,availables: 23cm Linear Amplifier with water-cooled GS-15b, DK9IP: 50 mhz amplifier with 3-500Z by G0MJW: 50Watts 144MHz FM Power Amplifier, M0UKD for 144 Mhz VHF and VHF activity for Amateur Radio: 70 cm Power Splitter. He is looking for a 1KW hf amp, similar to the old Heathkit sb-200 or sb-220. Solid State RF Amplifier Specifications & Pricing. Rated at 20 amps, continues 14 amps. 1200 Watts PEP Output, Instant Automatic band switching, no tuning, no warm-up, SWR protected, Quiet Variable-Speed Cooling. The amplifier's. It has a number of real-world survival advantages over cell phones, the internet, CB, GMRS, FRS, and other radios or forms of communication. And if you decide to take that next step, it helps you decide on whether to buy an older tube amplifier or modern solid-state amplifier. Hey all, my father is getting into ham radio. Their products included electronic test equipment, high fidelity home audio equipment, television receivers, amateur radio equipment, electronic ignition conversion modules for early model cars with point style ignitions, and the influential Heath H-8, H-89, and H-11 hobbyist computers, which were sold in kit form for assembly by the purchaser. help Easily extend the communication range of your handheld radio; Use the AMP-V25 to create: a mobile radio with a vehicle mounted antenna, a high power field radio with a field deployed antenna, a home/base radio attached to a mast. This totally silent solid state relay is rated for as much as 800V DC or AC , at up to 1. Mirage VHF/UHF Amplifiers B-5018-G Amplifier, Preamp, VHF, Solid State, 144-148 MHz, 50 W In, 160 W Out, UHF Female, SO-239, 13. This is the original WB0NNI scratch built RF. Type: Linear Amplifier. User manual EXPERT 2K-FA Pag. 1 KW 6 Meter LDMOS Amplifier 2 Meter 80W All Mode Amplifier 1 KW 2M LDMOS Amplifier 1 KW 222 MHz LDMOS Amplifier 500w 70cm Amplifier 1KW 70cm LDMOS Amplifier A Big Power Supply for SSPAs Low Pass Filter/Dual Directional Detector Sampling RF Power LED Bar Graph Meter Amplifier Control Board LNAs (preamps) and MMICs LNA Sequencing and Protection. Solid State HF PA DN600. Years back I had helped build a couple of valve (tube in the US) amplifiers using a single 4CX250B on 2 meters. for amateur radio operators who demand the highest quality of contemporary engineering designed for Ham Radio. The term usually refers to a type of radio-frequency (RF) power amplifier, some of which have output power measured in kilowatts, and are used in amateur radio. For diodes I paralled two sets of 14KV K2AW Silicon Alley rectifier diodes and mounted them on a 5" x 7" x 2" heat sink. Will ship, if you pay the shipping. Prometheus is the result of 10,000 hours of research and development over a five year period, offering serious radio amateurs unmatched performance and reliability. Frustration Free Contesting. Texas Star Amplifiers are sold for CW Ham Radio use only. 5 to 30 MHz. "The ARRL Handbook for the Radio Amateur," any recent edition. A 600 Watt homebrew Solid State Amplifier and Power Supply Amplifiers are a favourite homebrew project. 8 – 30 MHz All-Mode All-Band Electronic switch PTT input Watt Meter 6 Low-pass filter manual or automatic. Jackson Harbor Press has the following for sale: SMT Keyall Discrete - a surface mount High Voltage CW keying adapter for all tube and solid state rigs - 07/20/2019; SMT Zerobeat kit - Surface Mount Technology Zerobeat indicator kit - 07/03/2019. Buy HF SSB Ham Radio Amplifiers and get the best deals at the lowest prices on eBay! Great Savings Free Delivery / Collection on many items Zetagi B300P mobile solid state amplifier 20-30MHz. Solid State Kilowatt Amplifiers A tutorial on how to annoy your neighbors with modern LDMOS transistors Which bands will we explore here? • 2m, 222MHz and 70cm • 6m (winter 2013/14) • HF through 6m (spring 2014). For years friends have told me how much better that the tube radios and amplifiers sound compared to transistor equipment. 1966: Trio-Kenwood manufactures the first fully solid state amplifier in the industry that outsells traditional tube amplifiers. Legal-limit solid state amps compared With both Elecraft and Flex now adding solid state 1500 watt amplifiers to their line-up I thought it would be interesting to compare some of their main features with each other and with two other amps. Type: Power Amplifier. It uses two FET devices, and uses a very inexpensive 50V/50A surplus switching power supply. Amateur radio kits for simple radio construction products. Solid State RF Amplifier Specifications & Pricing. This forum for Amateur Radios (Ham radio) Only (That are Not covered by Other. The term usually refers to a type of radio-frequency (RF) power amplifier, some of which have output power measured in kilowatts, and are used in amateur radio. I went to this ham's incredible shack, took one look, and agreed to acquire. I love tube amplifiers. Title: Remote Operating for Amateur Radio - Ten Things to Know Author: Mark. 4335 Steeles Ave. To build the largest and most complete Amateur Radio community site on the Internet. The main category is Amateur linear amplifiers that is about HF amplifiers for ham radio use. One of the heat sink fins had a slight bend… 1 month ago on ebay. That we have an RF amplifier stage in a solid-state transmitter. superpacker hf amplifier by andy mitz and jon gottieb see description.