call sign lookup

A Portable Multi-Band Magnetic Loop Antenna  ^pop - Described here is a simple multi-band magnetic loop antenna designed for 20, 30 and 40 metres, but by changing the overall length of the wire coverage of other bands is feasible

Antennas : theory and designs - Thierry LOMBRY, ON4SKY, develops in several long articles all you need to know about antennas, their design and performance, for both amateurs and SWL

30m QRSS Junkbox Beacon - This simple 30m QRSS beacon is built entirely out of junkbox parts, the only component purchased specifically for this project was the 10,140kHz crystal.

AE7Q Amateur Radio Database Query Tools - Lookup callsign histories & applications, available Amateur Extra callsigns, vanity callsign predictions, and more. Updated from FCC data several times a day.

RadioQTH - Ham radio vanity license search - RadioQTH Amateur Radio Vanity License Search: This site shows vanity call sign requests filed with the FCC, when call signs will be available for vanity applications and other useful tools that will help in the search for the perfect amateur radio vanity call sign.

HB0 - DXpdition 2004 - HB0 on most HF bands from 12 Sept 2004 to 19 Sept. 2004. HB0/ON7TQ and HB0/ON6UQ Qsl via home call Buro or direct.

LT7W - Grupo TITAN - Special Callsign by TITAN Group, from Chubut, Patagonia Argentina - Working DX - Contest - ILLW and special events.

The Daily DX - The Daily DX is the pre-eminent Internet DX bulletin. You will receive DX news that is instantaneous and unreliant on the US Postal service. Your DX news will be automatically delivered to your home or office by e-mail Monday through Friday, 50 weeks per year. Unlike other bulletins which may take 2-5 days to reach you, The Daily DX news arrives before the information is out-of-date.

URDE Navarra Spain - Web site of URDE in Navarra north Spain, a lot of news periodically update

EMail Callbook by JH4PHW - Amateur Radio Ham E-Mail Callbook

Scottish HAM Portal - Scottish ham radio portal, basically concerns ham life in Scotland. The aims of the Portal shall be to further the interests of Scottish HAMs in all aspects of Amateur Radio.

DPD Productions - Home of the TrainTenna and MilTenna. Uniquely designed antennas for Transmit or Receive Only, Indoors and Outdoors, Railroad, Aviation, Military, Ham, MURS, GMRS, and other services.

ASTER Teleservices - Telecommunication Infrastructure jobs including the Tower and Foundation design

What is Ham Radio - What is ham radio, why Are They Called Hams and more answers to common questions by DCARC

Timewave manuals - Timewave Documents for User Download, PK-900 Multimode Data Controller, PK-232 Multimode Data Controller, DSP-232 Multimode Data Controller, DSP-9 Noise Reduction and Bandpass Filter, Audio Signal Processor and Noise Reduction Filter, Audio Signal Processor and Noise Reduction Filter for Yaesu SP-5 and SP-6 Speakers

HamHQ.com - Prints full color, custom Callsign Badges with a variety of options available.

www.oakcallsigns.com - Join the hundreds of hams worldwide that have ordered their handcrafted oak call signs for their shack. de KCØSDV

All in One by WD8KNC - Windows based contest logging software with multiple functions like antenna rotor control, dx cluster, cat control, voice and cw keying, supports many data modes, qrz lookup, pirint qsl and labels, mapping and more

MorseGen - MorseGen is a simple program the purpose of which is to generate Morse Code at whatever speed you feel comfortable reading, for practice purposes. It wasn't designed to be a tutor for those who know no Morse at all, although you might find it useful for that purpose. It doesn't have a feature for sending small character groups over and over, although this can easily be achieved by creating text files containing the character groups you want to practice.

SIGVIEW spectrum analyzer - Complete real time signal analysis software with wide range of powerful FFT spectral analysis tools, statistics functions and comprehensive visualization system.

EarthTime - This program graphically shows world time zones and their corresponding times. Just tap on the map to see the time in that part of the world. A list of three cities at the bottom of the screen can be customized to any city from the list provided. This list can also be updated using a PC program provided.

430MHz ATV transmitter - ATV transmitter on 430MHz band used with special transmitting tube named 5894 for final stage. Run about 10W average for TV signal and 20W at synchronous peak. Final stage control gird modulation works well for NTSC color video signal and good at audio as well.

144 MHz preamplifier with BF981 - Design of a preamplifier for 144 MHz with 1 dB NF and 23 dB gain using BF981. This amplifier is using a low cost silicon MOSFET (BF981 from Philips) to give more than 20 dB gain with around 1 dB noise figure on 2 meter.

Regenerative Radio Receiver Circuit - Useful and well thought out regenerative receiver design

Build A Vector Network Analyzer - The VNA (vector network analyzer) is an essential tool for measuring the complex impedance of a circuit at a given frequency. Article on how to build a Impedance analyzer.