75S-2B Receiver - Classic Ham Bands (80 through 10 meters), SSB and AM. Collins 2.1 KHz mechanical filter for SSB. Arduino modules for Counter/LCD Display and Si5351 Synthesizer BFO.
Octal Tribander Transceiver - All octal tubes (19 of them), covers 80, 40 and 20 meters.
The button at the right will take you to a slide show summarizing most of the information on this site.
This site is all about homebrew vacuum tube Single Sideband (SSB) radios built by KG7TR. In the amateur radio hobby, "homebrew" means equipment that was built from scratch, either from your own designs or someone else's plans. Click on any radio image below to learn more and get detailed technical data.
Octalmania Receiver and Transmitter - 80 and 20 meters SSB using all octal tubes!
Homebrew SSB Radios
The Real McCoy - 80 meter transmitter for LSB only. Uses a McCoy crystal filter. 10 tubes, including pair of 6883s for 100 watt PEP output. Built into a scrapped out Tektronix 465B cabinet and chassis.
Copyright © 2021 KG7TR. Technical information on this site may be shared in the interest of promoting the hobby of amateur radio. I do ask that you give proper credit to KG7TR for my equipment designs.
This button will take you to a YouTube video of the above presentation recorded at Jonesborough, Tennessee in July, 2016.
How the Solder Sipper came to be
HB-75 transceiver for 75 meters LSB. Uses a Kokusai mechanical filter. 16 tubes, with a pair of 6146s for 100 watts PEP output. LMB Heeger cabinet looks like a Collins S-Line radio.
This button will take you to a description of some of my homebrewing techniques, including how to make front panel decals used on my recent radios.
20 Meter Cheap 'N Easy II SSB Transmitter
Octalmania 80 receiver for 80 meters LSB. Another radio using a Kokusai mechanical filter. 10 octal tubes, all WWII vintage. Analog VFO with Arduino frequency counter driving six digit, seven segment LED display.
Octal Tribander with matching Power Supply/Speaker Unit and 813 Linear all set up and ready to go.
My first homebrew SSB rig, built around 1970, band switched 80 thru 15 meters. This radio needs a lot of TLC that I haven't gotten to yet - no data, pictures only!
80 Meter Cheap 'N Easy II SSB Transmitter
Vintage SSB Special - 20 Meter SSB Receiver and Transmitter
HB-600 Linear Amplifier - pair of 572Bs delivers 600 watts output on 80, 40 and 20 meters
2X-813 Linear Amplifier - Mates up with the Octal Tribander Transceiver. Pair of 813s in grounded grid put out about 600 watts PEP on 80, 40 and 20 meters.
Mike Bohn, KG7TR