history of radio tubes

SIERRA PAPA, International Dx & Packet Group - International Organization working for a complete 11 mt. band, Radio Foundation G. Marconi's Memory

Omega Group - Official web site

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.

AT Scotland Priority listing - AT Scotland official web site, managed by 108 AT 020 Colin

SIERRA PAPA - International Dx & Packet Group - We are an International Organization working for a complete 11 mt. band - Radio Foundation G. Marconi 's Memory

19 AT 318 Home page - Radiocodes, Prefix's, IOTA, Frequency's, Hot links and a lot more.

FRR - Romanian Amateur Radio Federation - Federatia RomÈna de Radioamatorism (Romanian Amateur Radio Federation)- The national non-governmental hamradio association in Romania

YO5KAI - CSM Cluj HamRadio Club - CLUJ NAPOCA, ROMANIA - Radioclubul CSM Cluj, Unul dintre -si cel mai mare radioclub din judetul Cluj CSM HamRadio Club of Cluj-Napoca, one of -and the most important- radio clubs in Cluj County, Romania.

Radio Society of Great Britain - The Headquarters site for the RSGB - representing UK amateur radio. News - Book Shop - Information.

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.

The Cumberland Valley Amateur Radio Club - Since 1956, the CVARC has been supporting Ham Radio in South Central Pennsylvania.

Brazil Amateur Radio Page - All about amateur radio in Brazil

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.

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

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

Giovannini Elettromeccanica - Quad, Yagi for low bands. Specialist in antennas, supports and moving of medium-large sized radio antennas, professional rotators, masts, towers, and accessories.

Australian RTTY Society - Australian National Amateur Radio Teleprinter Society (ANARTS)

3905 Century Club RTTY Net - The RTTY Net is one of several Nets run by the 3905 Century Club. There are SSB Nets on 160, 75, and 40 Meters and CW Nets on 80 and 40 Meters

SSTV by WB8DQT - Experiences, samples and software by WB8DQT

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

The Raymond Sarrio Company - Over 3500 radio and test equipment manuals, plus an batteries for two-way radios, laptops, and camcorders.

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

Ipmulse Systems - Impulse Systems offers several innovating products: F6FBB Language Editor and WinPack CoDec

PKTerm 99 - PKTerm 99 host mode terminal software for the Timewave/AEA TNCs takes advantage of the true multitasking capabilities of Windows 95,98,NT.

The AA4M ~ QQSL Web Page - Home of the ultimate Ham Radio QSL Label Program! Quick QSL for DOS, featuring great color, dot matrix, laser, and inkjet printer support, a user-friendly interface,