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HF Amplifiers
HF amplifiers for ham radio use.
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Most Popular
- 600 Watt HF Amplifier
- Schematics plans by K9GDT and all infos to build a 600 Watt HF Amplifier
- 1.5 to 30 Mhz RF Amplifier
- This high range amplifier is very small [SB200 size] Vacuum variable input and output caps as well input and output switching.
- How modify a CB linear to use in HF band
- how to modify a Cb linear amplifier to use in HAm HF band
- SP5GJN - HF Power Amplifiers
- HF home meade power amplifiers by SP5GJN
- 11 KW Linear amplifier by I0JX
- Use 4CX10000D / 8171, RF output power of 11 KW in key-down carrier on all bands. Power was measured with a Bird 4712 wattmeter and a 25 KW slug
- Build an HF Linear Amp
- Hombrew project to build an HF linear amplifier whose output is 210W for 16W of drive on 80M and max output is 300W.
- Easy Kilowatt Linear Amplifier
- Rf amplifier for hf ham radio service - includes easy to understand designs and penny-cheap construction details
- A low cost 600 watt ultra-linear amplifier
- This compact little amplifier is the brain-child of Pat Murdoch, ZL1AXB, in Auckland, New Zealand. It is only 11" wide, 4" high, and 9" deep.
Operates for 40, 20, 17, 15, 12, and 10m
- QRP Amplifier
- HF Bands QRP linear amplifier by SM0VPO
- MOSFET amplifier for 80 mt.
- Picture index of 150W MOSFET linear amplifier for 80m 1996, includes photos and schematics
- 500 WATT PA by SM0VPO
- 500W Power Amplifier by Harry Lythall - SM0VPO
- G3YXM 500 W solid state amplifier
- HF 500 Watt power amplifier schematics by G3YXM
- Homebrew 813 Linear Amplifier
- 813 Linear Amplifier Project includes many schematics, drawind and assembling construction
- Yaesu VL-1000 amplifier
- The Yaesu VL-1000 Quadra HF Linear amplifier
- Ameritron AL-80A modification
- W7TDC modification of the Ameritron AL-80A power amplifier
- 4 x 813's RF Amplifier Deck
- This amp project was an exercise in cheap! The design criteria was to use only components in the JUNQUE BOX
- 4CX1500
- This is a 4CX1500B grid driven amplifier that is built like a tank. The unit is considerably over designed as can be seen in the pictures documenting the construction
- N4IP HF and 6 Meters amplifier
- A solid state amplifier for HF and 6 meters band by N4IP
Alphabetical
- Broadband Power Amplifier
new
- A MRF141G 3-175MHz Broadband Power Amplifier DL4MEA 02/1998
[Hits: 42 | Votes: 0 | Rating: 0.00] - 1.5 to 30 Mhz RF Amplifier
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- This high range amplifier is very small [SB200 size] Vacuum variable input and output caps as well input and output switching.
[Hits: 31873 | Votes: 19 | Rating: 3.49] - 600 Watt HF Amplifier
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- Schematics plans by K9GDT and all infos to build a 600 Watt HF Amplifier
[Hits: 40768 | Votes: 73 | Rating: 4.55] - How modify a CB linear to use in HF band
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- how to modify a Cb linear amplifier to use in HAm HF band
[Hits: 21498 | Votes: 95 | Rating: 6.52] - SP5GJN - HF Power Amplifiers
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- HF home meade power amplifiers by SP5GJN
[Hits: 13980 | Votes: 16 | Rating: 7.12] - SUPERVOX - S 300
- AM CW SSB linear amplifier for 160 80 and 40 meter band
[Hits: 1703 | Votes: 2 | Rating: 5.50] - 1.5KW GU-43B HF Linear
updated
- by PA0FRI, 1.8 - 30 MHz, Input 50 ohm SWR <1.2:1
[Hits: 1064 | Votes: 2 | Rating: 5.50] - 10 11 meters RF Power Amplifier
- AM/FM/CW QRP RF Power Amplifier for the HF 10 or 11 meterband (28MHz/27MHz)
[Hits: 246 | Votes: 0 | Rating: 0.00] - 10 W Linear Amplifier
- This article describes a 10 watt linear amplifier that is capable of delivering over 15 watts into 50 ohms and uses cheap plastic transistors that are used in CB equipment. by Harry Lythall - SM0VPO
[Hits: 3107 | Votes: 3 | Rating: 7.00] - 100W HF QRO linear amplifier
- Based on Motorola MRF454, schematics and component list
[Hits: 2257 | Votes: 3 | Rating: 7.00] - 11 KW Linear amplifier by I0JX
- Use 4CX10000D / 8171, RF output power of 11 KW in key-down carrier on all bands. Power was measured with a Bird 4712 wattmeter and a 25 KW slug
[Hits: 10856 | Votes: 18 | Rating: 7.89] - 2 kW HF Amplifier Rebuild
- Heathkit SB-220 amplifier repaired at W8UM
[Hits: 1961 | Votes: 2 | Rating: 7.50] - 2 x 3-500Z HF Power Amp
- A 2x3-500Z rf power amplifier for 80-10 meters
[Hits: 1137 | Votes: 5 | Rating: 3.60] - 2 x 4-400A Amplifier Deck
- A Class C Amplifier rebuilt with 4-400A tubes by W7IUV
[Hits: 420 | Votes: 0 | Rating: 0.00] - 3 x 4-400A project
- An RF amplifier project by W7IUV
[Hits: 712 | Votes: 0 | Rating: 0.00] - 4 x 813's RF Amplifier Deck
- This amp project was an exercise in cheap! The design criteria was to use only components in the JUNQUE BOX
[Hits: 4220 | Votes: 11 | Rating: 6.45] - 4-1000A Project HF Amplifier
- An 80-10 meter band switchable HF amp using a 4-1000A
[Hits: 3102 | Votes: 3 | Rating: 4.67] - 4CX1500
- This is a 4CX1500B grid driven amplifier that is built like a tank. The unit is considerably over designed as can be seen in the pictures documenting the construction
[Hits: 3823 | Votes: 5 | Rating: 7.20] - 5-band RF Power Amplifier
- This project uses a widely available IRF510 MOSFET, work on HF 80, 40, 30, 20 and 17 meter bands
[Hits: 608 | Votes: 0 | Rating: 0.00] - 500 WATT PA by SM0VPO
- 500W Power Amplifier by Harry Lythall - SM0VPO
[Hits: 6793 | Votes: 8 | Rating: 5.63] - 7 Watt HF Amplifier
- An RF power amplifier, providing 7 Watts output in HF bands, schematic by ON6MU
[Hits: 103 | Votes: 0 | Rating: 0.00] - 80 m Hexfet power amplifier
- 80m hexfet power amplifier by W7ZOI
[Hits: 1398 | Votes: 3 | Rating: 7.67] - 80-10m Linear Amplifier
- High-power 3-500 HF linear amplifier by Don Pinnock G3HVA
[Hits: 286 | Votes: 1 | Rating: 8.00] - 8877 Linear Amplifier
- This linear amplifier utilizes two 8877 tubes. These are 3cx1500 tubes designed for grounded grid operation. By Ve6fi
[Hits: 2890 | Votes: 3 | Rating: 7.00] - A 20m monoband Power Amp
- The 20m monoband 4-1000 amplifier, by Jelmer (pa5r), Herman (pa0ten) and Frans (pa5ca)
[Hits: 1448 | Votes: 1 | Rating: 10.00] - A GS-35B Amp For HF
- The Show and Tell amp, a GS-35B RF power amplifier for HF
being built by W4ZT
[Hits: 1076 | Votes: 0 | Rating: 0.00] - A LF power amplifier
- A Low Frequency (LF) RF Power Amplifier by VK5BR it operates in a linear mode and can handle CW, AM and SSB.
[Hits: 1118 | Votes: 1 | Rating: 1.00] - A low cost 600 watt ultra-linear amplifier
- This compact little amplifier is the brain-child of Pat Murdoch, ZL1AXB, in Auckland, New Zealand. It is only 11" wide, 4" high, and 9" deep.
Operates for 40, 20, 17, 15, 12, and 10m
[Hits: 9294 | Votes: 7 | Rating: 6.15] - Adding 160M to HF amplifiers
- updated original manuscript, article published in January 1989 QST by Richard L. Measures, AG6K, April 1988
[Hits: 1700 | Votes: 1 | Rating: 10.00] - Alpha Amplifier Upgrades
- Alpha 77D,DX,SX, Alpha 76, Alpha 78 and 374 repair service and upgrade kits
[Hits: 1386 | Votes: 4 | Rating: 10.00] - Ameritron AL-1200 to gs35b Conversion
- The Ameritron AL-1200 Amplifier is in current production. In its factory configuration it uses a single 3CX1200A7 (triode) tube, grounded grid configuration. Re-tubing the AL-1200 with a GS-35b with success.
[Hits: 1094 | Votes: 2 | Rating: 4.00] - Ameritron AL-80A modification
- W7TDC modification of the Ameritron AL-80A power amplifier
[Hits: 4970 | Votes: 6 | Rating: 7.67] - Amplifier for 15 and 17 meter band
- The two linear amplifiers are ment for use with QRP SSB/CW/FM/AM transmitters on the amateur bands 15 and 17 meters can be powered from a 12 volt DC supply by ON6MU
[Hits: 466 | Votes: 0 | Rating: 0.00] - Build an HF Linear Amp
- Hombrew project to build an HF linear amplifier whose output is 210W for 16W of drive on 80M and max output is 300W.
[Hits: 10152 | Votes: 4 | Rating: 6.50] - Circuit Improvements for the TL-922
- by Richard L. Measures, AG6K
[Hits: 737 | Votes: 1 | Rating: 10.00] - COLLINS 30L-1 HF Linear Amplifier
- The Collins 30L-1 Linear Amplifier has 1000 watts PEP power input on SSB and 1000 watts average on CW on all bands. It can be driven by the Collins 32S-3 Transmitter Collins KWM-2 or KWM-1 Transceiver, or most 70-100 watt exciters.
[Hits: 1427 | Votes: 0 | Rating: 0.00] - Easy Kilowatt Linear Amplifier
- Rf amplifier for hf ham radio service - includes easy to understand designs and penny-cheap construction details
[Hits: 9761 | Votes: 10 | Rating: 6.40] - G3YXM 500 W solid state amplifier
- HF 500 Watt power amplifier schematics by G3YXM
[Hits: 6357 | Votes: 13 | Rating: 8.24] - G3YXM 500 W PA
- 40-80-160 meter band linear amplifier
[Hits: 2087 | Votes: 3 | Rating: 7.00] - Granta Contest Group - HF amplifier
- The Granta Contest Group was founded in 1997 by Mark G4AXX, Colin G4CWH, Simon G4EAG, Andy G4KNO. The Group gets it's name from the River Granta (or Cam), which passes through Cambridgeshire and Essex.
Using is a 160-10m "desktop kilowatt" linear amplifier using an Eimac 4CX1000A tetrode
[Hits: 1128 | Votes: 2 | Rating: 10.00] - GS-35b HF Power Amplifier
- The amplifier described here is an update of the High Power linear amplifier described in the July, 1995 issue of the "Radiolubitel. KW i UKW" magazine in Belarus. In English, this is "Radio Amateur. HF and VHF". by Gary Podgorny, EW1MM
[Hits: 523 | Votes: 0 | Rating: 0.00] - Harris linear amplifiers mods
- Harris linear amplifiers RF-353 and RF-355, full automatic amplifiers, 1.6 to 30 MHz
How to use them without the Harris transceiver RT-1446 by F1FRV
[Hits: 167 | Votes: 6 | Rating: 10.00] - Heathkit SB-200 Modification
- Tuned input circuit modification by Tom Boza - NE7X
[Hits: 2117 | Votes: 12 | Rating: 7.08] - Heathkit SB-200 upgrade
- Tom Sowden K0GKD notes on upgrading the Heathkit SB-200 Amplifier
[Hits: 374 | Votes: 0 | Rating: 0.00] - Heathkit SB-220
- The Heathkit SB-220, two 3-500Z, amplifier made a notable impact in the world of amateur radio when it debuted in 1975.
Resources and modifications
[Hits: 1594 | Votes: 1 | Rating: 1.00] - Heathkit SB-220 and SB-221 essential mod
- Modifications to avoid damage when 3-500Z tubes fail.
[Hits: 1229 | Votes: 4 | Rating: 6.75] - Henry 2KD-5 Grade UP Modification
[Hits: 1006 | Votes: 5 | Rating: 8.00] - HF Packer- Amp Project
- 3rd Generation HF Packer-Amp home construction project
[Hits: 208 | Votes: 0 | Rating: 0.00] - HF QRP Lin Ampl
- HF QRP Linear Amplifier with 2x 2SC2166 + 2x 2SC1969 Push Pull Transistors (13.8V)
[Hits: 2254 | Votes: 4 | Rating: 5.50] - HF Tetrode Linear Amplifiers
- I4FAF etrode Tube Linear Amplifier experience
[Hits: 1939 | Votes: 1 | Rating: 10.00] - Hillar's Amp BTI LK-2000 Amplifier to gs35b
- The BTI LK-2000 was originally a 3-1000z based amplifier, converted to a GS-35b.
[Hits: 816 | Votes: 2 | Rating: 5.50] - Homebrew HF Amp with 3CX3000F7
- Grounded grid triode HF linear amplifier with pictures and schematics diagrams by W2DTC.
The amp design was for 160 80 40 and 20 meters
[Hits: 1239 | Votes: 5 | Rating: 6.20] - Homebrew 813 Linear Amplifier
- 813 Linear Amplifier Project includes many schematics, drawind and assembling construction
[Hits: 6024 | Votes: 6 | Rating: 6.83] - Homebrew a HF Power Amplifier
- HF power amplifier project by YB0AH
[Hits: 357 | Votes: 0 | Rating: 0.00] - Homebrewing a tube-type HF amp.
- This article discuss the use and construction of a grounded-grid, triode type HF amplifiers
[Hits: 156 | Votes: 0 | Rating: 0.00] - I5UXJ home made amplifiers
- Infomration schematics and pictures about various hf and vhf QRO linear amplifiers
[Hits: 1660 | Votes: 3 | Rating: 7.00] - IK5MEN HF amplifier 10-160m.
- Italian page including pictures schematics diagrams of an home made linear amplifier using four EL509 in parallel. Output power is about 700W.
[Hits: 2244 | Votes: 6 | Rating: 3.50] - Improving Heathkit SB-220
- Circuit Improvements for the Heath SB-220 Amplifier
[Hits: 1257 | Votes: 5 | Rating: 10.00] - Improving The Heathkit SB-200
- A QST article, hints and kinks on improving the SB-200 amplifier
[Hits: 849 | Votes: 1 | Rating: 1.00] - JA1TNK HF VHF Amplifiers
- 1.8MHz`28MHz 9BAND 100 W RF amplifier, and a 50Mhz 100 W amplifier
[Hits: 2162 | Votes: 1 | Rating: 10.00] - JA3MHV Amplifiers
- 4CX1000A x2 AB1GG Power Amplifier, 21MHz 15W and 3.5/7MHz 20W SSB Transceiver by JA3MHV, 50/144/435MHz 80W Linear Amplifier
[Hits: 1490 | Votes: 1 | Rating: 10.00] - K0GKD Solid State amplifier
- High Power Solid State 600 Watts Output Motorola MRF 150 FETs
[Hits: 2604 | Votes: 11 | Rating: 8.82] - KA5ROW's 922-A mods
- My Shack, Cavanal Hill Worlds Highest hill
and a 10 Meter mod for Kenwood 922-A
[Hits: 1566 | Votes: 5 | Rating: 5.40] - KENWOOD TL-922 Modifications
- Allow 9 bands and 1300 Watt output on the TL-922 amplifier with this document by PA0FRI
[Hits: 1099 | Votes: 7 | Rating: 4.71] - LA7MI 40W RF Amplifier for 80m
- 40W Linear Power amplifier with FETs for 80m
Some notes about saturation in ferrite- and iron-cores.
Written by LA7MI Stein Torp, N-5005 Bergen
[Hits: 1201 | Votes: 1 | Rating: 2.00] - Modifications to the Ameritron AL-1200 Amplifier
- This page describes two modifications W8WWV made to his AL-1200 amplifier. The mods were obtained from Ameritron, so they are official.
[Hits: 1449 | Votes: 4 | Rating: 2.75] - MOSFET amplifier for 80 mt.
- Picture index of 150W MOSFET linear amplifier for 80m 1996, includes photos and schematics
[Hits: 8575 | Votes: 13 | Rating: 5.07] - N1IBC Eimac 4CX1500B HF Power Amplifier
- 1500 Watt HF power amplifier
[Hits: 2519 | Votes: 5 | Rating: 4.40] - N4ATS.com - Devoted to the Yaesu FL-7000 HF Linear Amplifier
- N4ATS - Devoted to the Yaesu FL-7000 Amplifier. I have been rebuilding, repairing, and applying modifications to the Yaesu FL-7000 amplifier for 15 years. Over 200 units completed and counting!
[Hits: 1124 | Votes: 2 | Rating: 9.00] - N4IP HF and 6 Meters amplifier
- A solid state amplifier for HF and 6 meters band by N4IP
[Hits: 3601 | Votes: 2 | Rating: 10.00] - Old 813 homebrew Amp
- Restore an old 813 homebrew Amp with power supply from recycled parts
[Hits: 402 | Votes: 0 | Rating: 0.00] - ON7WJ Amplifier 1000 watt
[Hits: 2866 | Votes: 5 | Rating: 7.20] - ON7WJ Amplifier 500 watt
[Hits: 2497 | Votes: 4 | Rating: 7.75] - QRP Amplifier
- HF Bands QRP linear amplifier by SM0VPO
[Hits: 9272 | Votes: 11 | Rating: 7.46] - QSK for the TL-922 and SB-220 mods
- Beautifully constructed amplifiers. Unfortunately, are not suited for high speed T-R switching, a necessary attribute for operating AMTOR, QSK-CW, or SSB-VOX modes.
[Hits: 1232 | Votes: 5 | Rating: 9.80] - Restoring an Harris RF-103
- These amps are designed to operate from 2.0 to 30MHz continuously, at an RF power output level of 1Kw, in any mode, no time limit.
[Hits: 42 | Votes: 0 | Rating: 0.00] - Russian amplifier for 160 and 6 meters
- by Tony I0JX
[Hits: 2574 | Votes: 2 | Rating: 9.00] - SB-200 Amplifier Rebuild Notes
- Robert Norgards KL7FM's, notes on upgrading the Heathkit SB-200
[Hits: 185 | Votes: 0 | Rating: 0.00] - SB-220 SB-221 Heathkit Amplifiers
- SB-220 or SB-221 Heathkit Amp Using Eimac's 3-500Z - K0GKD
[Hits: 2604 | Votes: 5 | Rating: 7.60] - SP5GJN HF amplifiers & CW Keys
- Home made HF power amplifiers and CW Keys & Paddles
[Hits: 2026 | Votes: 4 | Rating: 7.75] - The G2DAF Linear Amplifier
- Scans of original G2DAF articles on his HF linear amplifier using QY3-125 tube
[Hits: 89 | Votes: 0 | Rating: 0.00] - The IC-4KL HF Amplifier
- The IC-4KL HF solid-state 1kW amplifier, product review and maintenance by KK5DR
[Hits: 92 | Votes: 0 | Rating: 0.00] - Using the Heath SB-200 Linear on Six Meters
- Improvements to Using the Heath SB-200 Linear on Six Meters by Ron Klimas, WZ1V
[Hits: 1265 | Votes: 4 | Rating: 4.25] - VE6FI 4-1000a amplifier
- 15-160 meters HF power amplifier
[Hits: 1858 | Votes: 3 | Rating: 9.00] - W2DTC Homebew RF Amplifier
- Grounded grid, Cathode driven, 3CX3000F7 Triodes
[Hits: 978 | Votes: 2 | Rating: 5.50] - WA2EBY HF amplifier
- Revisiting the WA2EBY broadband HF amplifier
[Hits: 274 | Votes: 0 | Rating: 0.00] - WA2EBY Mosfet Amplifier
- A Broadtband HF Amplifier Using Low-Cost Power MOSFETs
[Hits: 329 | Votes: 0 | Rating: 0.00] - YAESU FL-2100Z Amplifier Repairs
- The FL-2100Z amplifier referenced in the following images is the 6-Band model covering 10m thru 160m (no WARC bands) and not the 9-Band version that included the WARC bands. Modifications, schematics and manual
[Hits: 1322 | Votes: 3 | Rating: 5.33] - Yaesu FL-2100Z Linear HF Amplifier Mods
- Two usefull modifications of the FL 2100
[Hits: 1871 | Votes: 16 | Rating: 8.13] - Yaesu VL-1000 amplifier
- The Yaesu VL-1000 Quadra HF Linear amplifier
[Hits: 5805 | Votes: 3 | Rating: 6.67] - YC156 Conversion
- RF Amplifier project modified the original chassis to use a 4CX1000A instead of a YC156 triode
[Hits: 331 | Votes: 0 | Rating: 0.00] - YU1AW HF Power Amps
- 2xGU84B and 1xGS31B hf power amplifier plans
[Hits: 2266 | Votes: 6 | Rating: 8.33]
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