201a diagram

HF Aerial Design - A novel approach to aerial evaluation with diagrams and graphs by G3CWI

A Magnetic Loop Antenna for Shortwave Listening (SWL) by KR1ST - A well documented plan to build a magnetic loop antenna for Shortwave Listening, includes photos and diagrams.

Geloso story - Includes some schematic diagrams

Antique Radio Schematics - Specializes in antique radio schematics, circuit diagrams and service data for vintage tube radios. Carries information for American, Canadian and European antique radios.

A World of Wireless, Radio Museum - A World of Wireless is our virtual radiomuseum. It shows the history of radio from a Dutch perspective. Learn about the early history, enjoy the nostalgia or browse our database. Our free diagram service contains 150 downloadable Philips diagrams.

The Sunspot Cycle - Sunspot Numbers, The Butterfly Diagram, the Greenwich sunspot data and sunspot realted infos.

PolarPlot - Freeware antenna software that lets you see what the polar diagram of your rotatable beam actually looks like where it is operating. With PolarPlot you can measure the polar diagram of the antenna and check for abnormalities - compare plots taken before and after changes to the design or location - check the -3dB beamwidth - look at the front to back ratio - see the size and position of the sidelobes.

Galaxy radio mods  ^pop - Galaxy web site updates and additions with modifications, diagrams, and schematics for galaxy radios

CB Radio & PMR 466 Docs - Documentation (manuals, schematics diagram, ...) for CB and PMR 446 radio's

Galaxy DX Radios Service Information  ^updated - Service information, modifications, diagrams, manuals and schematics, and technical files on Galaxy DX Radios.

Ham International CB Radios - Retrospective of a mark now disappeared. Jumbo, Multimode, Concorde, Puma, Viking. Photographs, diagrams, adjustments etc.

Cobra Radios Service info - Service information, manuals, diagrams pictures and schematics, and technical files on Cobra Radios

Radio-TNC wiring - Radio-TNC wiring diagrams index

Krasnodar - radio schematics - Contain schematic diagram of many different radio, and some operations instructions.

Radio Beacon Controller - Diagram shows a block diagram of a Radio Beacon

7 MHz SSB Transceiver  ^pop - Circuit diagram and discription of 7 MHz Ham Radio SSB Transceiver. Transceiver using two MC1496, 4.43 MHz Ladder filter, LM386, LM324 and IRF840 in final.

Bowden's Hobby Circuits - A small collection of electronic circuits for the hobbyist or student. Site includes over 100 circuit diagrams, links to related sites, commercial kits and projects, newsgroups and educational areas. Most of the circuits can be built with common components available from Radio Shack or salvaged from scrap electronic equipment

Kenwood Connector Diagrams and Pinouts - Kenwood Ham Equipment Connector Diagrams and Pinouts (1999)

Microphone Wiring Diagrams  ^pop - Some mic wiring diagrams for ranger realistic alan, cobra, ge, uniden, yaesu, kenwood radios. Diagrams for the microphone connections on many of the common CB radios, as well as some popular Amateur radios.

Microphone Wiring  ^pop - Alan Cobra Uniden President Galaxy and more microphone wiring diagrams

11 Most Popular MIC Wiring Diagrams  ^pop - 11 most popular MIC wiring diagrams including AZDEN Alinco Icom Kenwood Yaesu Astatic Cobra Sadelta Turner microphens diagrams and pin-end views

About Mic-wiring  ^pop - Kenwood Alinco and Icom Mic Wiring diagrams by pictures

Defpom CB and HAM radio mods  ^pop - Circuit diagrams, CB and HAM mods, alignments, data sheets and pinouts, a massive site with over 600 pages of free info

CAT Interface for Yaesu - schematic diagram for CAT interface for yaesu HF Transceivers

Ham.dmz.ro  ^pop - Programming software, diagrams, radio mods, secrets, service manuals for Motorola, Yaesu, Kenwood, Icom, Alinco.