cat pc schematic

N. American Data Communications Museum - Telephony technology from telegraph to digital transmission

Azteca DX Radio Group - The Alpha-Delta group is a group dedicated 100% to DX Oncemetros in the band and can say that is 100% of Mexican origin.

CB, UKF - 161SD123 161ED023 personal page

Contest Club Finland - Finnish Club dedicated to contest, with awards and reflector

NFDXA - NFDXA is a small group of amateurs located in and around the Jacksonville area in Northeast Florida

Friends of Amateur Radio Group FARG. - F.A.R.G. The Friends of Amateur Radio Group Home Page.A fraternal organization dedicated to the advancement of Amateur Radio. Many links , Club roster.

British Amateur Radio Teledata Group - BARTG caters for the radio amateur who is interested in data communications. All interests are covered from mechanical teleprinters through to Packet, FAX, AMTOR, PACTOR, CLOVER and PSK31. One of the oldest data communication enthusiast groups in the world.

OK1CDJ Ondrej - VHF, UHF page, technical articles, projects, datasheets

Web-controlled Shortwave Radio  ^pop - Drake R8 Communications Receiver Reston Virginia, USA

PA3ANG Online Receivers - Control an ICOM PCR-100 and listen to the audio stream. This web controlled receiver si based in the Netherlands by PA3ANG and offer 10kHz - 1300MHz in AM, FM, FMW

Texas Towers - Ham radio products, with on-line catalog and prices

Sirtel - Sirtel produces a wide range of radio and telecommunications antennas

All Electronics Corp. - Surplus and electronics parts. On-line catalog available.

A/D Technologies - A/D Technologies is a manufacturer and service company dedicated to providing unique and valuable products and services to ourcustomers.

INRAD International Radio - Supplier of custom designed, high performance quartz crystal filters for communications receivers and transceivers, for Yaesu Icom Kenwood and Collins radios

SDR-Kits.net - USB-Controlled Synthesizer for Softrock RXTX and Local Oscillator Applications

AEA - AEA Technology Inc. is a pioneer and leading manufacturer of RF and cable test equipment for the wireless, Telco, CATV, NMR & MRI, RFID, telemetry, aviation, commercial, military, and two-way radio industries. Produces SWR Meters, Pre Amplifiers, filters, power meters and antenna testing products

Meteor scatter basics - Working DX on a Dead 50MHz Band using Meteor Scatter, by Palle Preben-Hansen, OZ1RH

Meteors Q&A - very informative, answers questions like what is forward scatter, how does a meteor reflect radio waves ?

Heathkit SB-220 and SB-221 essential mod - Modifications to avoid damage when 3-500Z tubes fail.

Electronic Service Pros  ^pop - HAM/Broadcast, Modifications & Repair, D-104 mods, TS-830 TS-530 mods

Universal Radio  ^pop - Online Catalog. All about Radio comms, HF VHF Scanner CB radios, antennas and accessories

Antenna Visualization - UNIX Application developped at the University of Texas Department of the Computer Sciences, permit to display the radiation pattern and the current magnitude.

GcmWin : Great Circle Map  ^pop - GCM is a freeware great circle map plotting software for windows, you can choose colours, scale, meridians, fields and or squares from the maidenhead locator system.

Macintosh SSTV Shareware - SSTV software is now available for the Macintosh computers, for the first time.