new tubes

Loop Antenna News and Information Forum - This is the Loop Antenna Group to Ask Your Questions, Get Answers and Information about Loop Antennas for improved your Radio Listening and Enjoyment.

The DK7ZB-Quadlong antenna - New type of a Quad antenna, 6.4dBd gain

The Cathode Ray Tube site - Collecting and history of CRT tubes and physics instruments

Antique Mall Books - We have a large selection of PHOTOFACT, repair manuals as well as some Perpetual Troubleshooter's Manuals. New ones are added almost daily.

LogSeach.de - Ham radio logbooks database, include a dx news calendar and a qsl manager service by DL5NAM

Passion RadioAmateur 2.0 - French Blog about amateur radio and new technologies, Internet, Hyperfréquences (SHF), DX Radio et Contests, Antennas and Videos by F1JXQ

International DX Association, Inc - The International DX Association is an amateur radio organization dedicated to working DX and making DX possible. Promotes and supports DX operations in countries that have limited or no amateur radio activity. Support is usually to DXpeditions to rare DXCC entities. Provides DX news and QSL routes on 14.236 MHz at 2330z.

OL7CAV - Czech ham radio organization, renewed in 2004.

New Westminster Amateur Radio Club - In 1996 the NWARC was formed and is a non-profit society organized to deliver communication services during emergencies.

AValon Radio Amateur Club - AVRAC Club Our goal is to have fun with Amateur radio in the St. John’s metro region. Newfoundland Canada

Baccalieu Amateur Radio Klub - Baccalieu amateur radio klub inc. is located in carbonear, newfoundland

The Utica Amateur Radio Club - The source for amateur radio news in NY

Listen to Radio Meteors live - Echos of USAF (Formally NAVSPASUR) radar signals reflected off of meteor trails received at Roswell, New Mexico

Choking on RF - The intrepid newcomer encounters common mode problems in a mobile environment. Implementing some common mode chokes will be possible to reduce interferences

Slow CW an introduction for Newcomers - DK8KW Longwave Information

Israel FM repeater network - Israel repeaters list and news, Hebew repeaters

ABCVacuumTubes.com - ABC Vacuum Tubes is dedicated to providing Ham radio, amateur radio operators, antique radio enthusiasts, audio professionals and hobbyists the ability to choose from an inventory of over 3.5 Million Vacuum Tubes on hand under one roof.

Shortwave Central - Here you will find broadcast, pirate, and clandestine information including loggings, QSLs tips, and last-minute news.

shortWWWave - News, frequency guides and programme information, on shortwave and other international media.

425 Toolbar - Internet explorer and Firefox toolbar by the popular dx news site 425 dx news.

HamInfoBar - Ham Radio & SWL Toolbar Priority listing - Free toolbar for radio hams & SWLs: Search QRZ.com, HamCall, FindU.com, Google, Wikipedia, eBay and other useful engines. Check the latest DX spots. Get links to QSL, satellite, forums, propagation, broadcast radio, maps etc. RSS feeds including Amsat & the latest eBay ham specials. Listen to ARRL, RSGB and WIA news & other radio stations. Plus lots of other features!

SweepGen - SweepGen turns a PC into an Audio Oscillator and Sweep Generator which can be used for testing audio or educational purposes. In conjunction with audio test instruments, you can make frequency response plots. SweepGen uses the sound card in your PC to produce sinewaves

A low cost 600 watt ultra-linear amplifier  ^pop - This compact little amplifier is the brain-child of Pat Murdoch, ZL1AXB, in Auckland, New Zealand. It is only 11" wide, 4" high, and 9" deep. Operates for 40, 20, 17, 15, 12, and 10m

Second-Harmonic-Optimized Low-Pass Filters - Sometimes we need a little more output filtering than traditional designs offer. Look at a new filter that can give you that extra boost. QST article by W3NQN

The Ufer ground system - A new look at the Ufer ground system by Chris Scott