Amateur
- 141
- K5BCQ Homebrew
- For radio enthusiasts interested in building and using the 1950s-60s era HBR receivers. Repair information for Heathkit SB-104, SB-101, and HW-101 transceivers.
- 142
- K5DKZ
- Offers information about homemade audio amplifiers, RF amplifiers, auxiliary ham radio equipment including antenna designs and constructions.
- 143
- K9GDT
- George describes his homebrew projects: a 40m CW/SSB receiver, 40m 100 watt CW/SSB/AM/RTTY transmitter, 75m AM transceiver and 600 Watt HF amplifier.
- 144
- KD7NRQ
- Jason shares information on design and construction of a vintage 813 beam power tube CW crystal transmitter.
- 146
- Klunky Schematic Editor Home Page
- Intended for use by radio amateurs to draw small schematics, for small projects.
- 147
- M1HOG
- Amateur Radio construction projects including QRP, homebrew and kits. Special event operating across the UK.
- 149
- N6GN Microwave Link Page
- Information about the Multi-Megabit/sec Microwave Data Link article which was first published in the December 1989 edition of Ham Radio Magazine.
- 150
- Portable Lightplants and Generators
- Homebrewed alternators and generators with photos and details.
- 152
- QRP and HOMEBREW
- Homebrewing of transceivers, receivers, transmitters and test equipment. [Italian - English]
- 153
- RTTY - FSK/AFSK Interface and Diagrams
- How to remove the so called "ground loop" and the reentry in the RTTY broadcast.
- 154
- Repeater Builder's Technical Information Page
- Providing information for making amateur and commercial repeaters.
- 156
- Technical Topics
- Forum includes HF/VHF antenna projects, high power Russian GS35B RF amplifiers, mobile RFI solutions, and vintage radios.
- 157
- The Spontaflex Reflex Page
- The ingenious reflex circuits of Sir Douglas Hall as published in The Radio Constructor