amplifier 20 m

amplifier 20 m

Categories

Pages: 1 2 3 4 [next]

• OH7SV Matti Hohtola Ham Projects - The most modern QRP transceiver in 2004,Direct Conversion HF Transceiver with DDS LO, 50 ohm to 200 ohm HF wide band transformers, Wilkinson splitter for RX measurements, Windom baluns 2001/2004, Ferrite rod antenna for 80 meter, Magnetic Loop Antenna for 80 m, Mascot Switched PSU 9320 modification to 8A peak current, 150W MOSFET linear amplifier for 80m, 80 m HF SSB/CW Transceiver
  [ Hits: 20373 | Votes: 36 | Rating: 8.11 ]

• QRO Technologies - HF amplifiers manufacturer maker of HF-2000 RF power amplifier
  [ Hits: 10794 | Votes: 17 | Rating: 8.35 ]

• NPR New Packet Radio - IP over 430 MHz - NPR (New Packet Radio) is a custom amateur radio digital protocol, designed by F4HDK to transport bidirectional IP trafic over radio links on the 70cm band. This IP protocol is optimized for point-to-multipoint topology, with the help of managed-TDMA. Bitrate is up to 500kbps. Home Made modem has a built-in ethernet port to connect to PC. To boost power a DMR amplifier is required to reach 20W. This project is an extension of HSMM - Hamnet - AREDN networks
  [ Hits: 151 | Votes: 0 | Rating: 0 ]

• Improving The Heathkit SB-200 - A QST article, hints and kinks on improving the SB-200 amplifier
  [ Hits: 2756 | Votes: 1 | Rating: 1 ]

• 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: 3824 | Votes: 2 | Rating: 5.5 ]
• 2 kW HF Amplifier Rebuild - Heathkit SB-220 amplifier repaired at W8UM
  [ Hits: 7640 | Votes: 6 | Rating: 5.17 ]

• 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: 2980 | Votes: 7 | Rating: 8.57 ]

• N4ATS.com - 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: 2249 | Votes: 3 | Rating: 9.33 ]

• SB220 SB221 arcing problems improvements mods - This article explores the claim an amplifier might arc from a parasitic oscillation, damaging capacitors, bandswitches, or other components.
  [ Hits: 1307 | Votes: 2 | Rating: 10 ]
• K5LAD's 4-1000A Amplifier
  [ Hits: 2253 | Votes: 17 | Rating: 8.7 ]
• 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: 3042 | Votes: 4 | Rating: 2.75 ]
• A low cost 600 watt ultra-linear amplifier  ^pop - 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: 32124 | Votes: 27 | Rating: 6.67 ]

• 1.5 to 30 Mhz RF Amplifier  ^pop - This high range amplifier is very small [SB200 size] Vacuum variable input and output caps as well input and output switching.
  [ Hits: 53855 | Votes: 43 | Rating: 3.82 ]
• A 20m monoband Power Amp - The 20m monoband 4-1000 amplifier, by Jelmer (pa5r), Herman (pa0ten) and Frans (pa5ca)
  [ Hits: 2891 | Votes: 2 | Rating: 9.5 ]
• 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: 3274 | Votes: 9 | Rating: 6.33 ]
• 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: 2659 | Votes: 2 | Rating: 4 ]

• 13cm RF Amplifier - This amplifier uses two 60w Spectrian amplifier boards with the usual input and output hybrid coupler and combiner.
  [ Hits: 421 | Votes: 1 | Rating: 10 ]

• 50 Mhz solid state 600W amplifier - G3WZT John Matthews project of a 600 Watt solid state linear amplifier for the 6 meters band
  [ Hits: 2178 | Votes: 0 | Rating: 0 ]
• A 20W Amplifier for 2 meters - VU2RAR basic VHF power amplifier suitable for 144-146 Mhz output power can vary from 3 to 25 Watts.
  [ Hits: 3042 | Votes: 5 | Rating: 6.6 ]

• 144 MHz preamplifier with BF981 - Design of a preamplifier for 144 MHz with 1 dB NF and 23 dB gain using BF981. This amplifier is using a low cost silicon MOSFET (BF981 from Philips) to give more than 20 dB gain with around 1 dB noise figure on 2 meter.
  [ Hits: 17962 | Votes: 28 | Rating: 5.82 ]

Pages: 1 2 3 4 [next]