cobra 29 ltd chr

3 Elements on 40 Meters - The inverted "U" 3 elements on 40 meters by ik2egl

A 5-element beam for Four - 5-element antenna, with which G0JJL has worked lots of EU crossband, and won the RSGB Christmas Cumulatives 70MHz section twice in a row.

A 4:1 Balun  ^pop - A single-core 4:1 current balun of improved performance by Chris Trask N7ZWY PDF file

Exploring the secrets of the Smith chart - If you're a Radio Engineer wannabee, you need to understand transmission lines. It's impossible to really understand transmitters and antennas without understanding lines. Using the Smith chart is far easier than really understanding the math by Chris Scott and associates

A short Quagi for 1298Mhz - Based on K5OE design by GM1SXX

The "Woodpecker" Tuning aid - This little gadget is that it allows you to tune up at full peak output power, whilst limiting the average power to a fraction of the peak, thereby protecting the PA from meltdown

Irish-Radio.net - This is a website for Irish CB operators can use to send & recieve QSL via email.

N6UN - N6UN BEACON 28.290 Mhz San Diego California USA

WFF Kazakhstan expedition 2010 - 29 May to 4 June 2010, WFF comprehensive expedition in Kazakhstan-Zhetisu-2010 WFF expedition on national parks and wildlife reserve of Almaty oblast- Zhetisu-2010

10-10 International - Ten-Ten International Net, or 10-10 for short, is an organization of amateur radio operators dedicated to maintaining high levels of amateur radio communications on the 10-meter amateur band (28.0-29.7 MHz).

Boca Raton Amateur Radio Association - The home page of the boca raton amateur radio association. we meet on every first tuesday of the month and operate the 145.290 repeater. Palm Beach County, Florida.

W2RUI Lockport Amateur Radio Association - Serving the Amateur radio community in the Lockport, New York area, since 1929.

Kleinanzeigen der Zeitschrift Funkamateur - Ham radio ads from Germanyi

K1KAA - Mike DeChristopher Priority listing - The Contest Cam shows the M/S or M/2 position during most contests.

MeterTest Ltd - Producer of meter test equipment for electricity meters testing and calibration

Digital Modes used in Ham Radio - Article with waterfall pictures and samples of several digital modes like psk31, sstv packet pactor hellschreiber domino thor jt65 and more

K6DBG - CW really is a language - Some things I've discovered about learning and operating CW by Chris Kantarjiev K6DBG

ECHO (AO-51) - SpaceQuest, Ltd. - Spacequest ltd. is a leading developer of advanced micro satellite technology, specializing in the design, development, and testing of space and ground components for operation with low-earth orbiting satellites.

ICOM 746 Temperature Measurements - The ICOM 746-Pro has acquired a history of NEC 1678G (IC-151) MMIC and driver transistor 2SK2975 failures. The failure of IC-151 appears to be a combination of ESD damage from electrostatic charge on the antenna entering IC-151, and perhaps thermal heat.

Wire Free Direct LtD - UK company that's a full-line dealer for wind and solar power systems, plus system design.

Kustom CB & Stereo - CB Radios, 10 Meter Radios, Base Station Radios, Amateur Radios, Wilson, Firestik, Monkey Made, Striker Antennas, Cobra, Uniden, Galaxy, Connex, Magnum, Ranger, General Radios in Phoenix, AZ

Mi3nie - HF wire antennas toroids, connectors and accessories, online shop

cocoaModem - CocoaModem is an opensource MacOS X 10.4 application which implements modems (modulator-demodulators) for RTTY PSK MFSK Hellschreiber CW SITOR HF-FAX provided by W7AY

Bitscope Waveform Generator - Integrated DSP based waveform generator and timing for BitScope. Arbitrary waveforms, synchronized clocks and external triggers.

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