alan 48 plus

Multiband wire antennas and ATUs  ^pop - DC1YB experience on multiband wire antennas. In particular examine FD4 windom and G5RV antenna, considering noise levels and matching aspects. Author reviews also the usage of Automatic antenna tuners in TS-50 TS-480 and GC-3000

The 7-Hex Driven Vertical Array - The array consists of 7 vertical antennas arranged as 6 verticals in a hexagon shape plus 1 additional vertical in the center of the hexagon

The Hairpin Monopole Antenna - Numerous questions have been raised concerning its performance, namely How can a balanced structure radiate? and What is its impedance? This article will attempt to answer these questions.

Dual Band J Pole - Dual band J pole operational over the entire 6Mtr band (50 – 54MHz) and the entire 2Mtr band (144 – 148MHz), slightly favouring the upper half of both bands by VK6YSF

160 m Balanced Coaxial Receiving Loop Antenna - KN4LF explanation of the 160 meter balanced coaxial receiving loop antenna, easily adaptable to a 40 and 80 meters band

Boomless quad antenna  ^pop - VU2GX Girimajij article on boomless quad antennas

Small Tuned Loop AM Broadcast Antenna - Alan yates vk2zay's ham radio website, homebrew construction, general electronics, high voltage experiments, amateur rocketry, and general geek stuff

The EZ-Tuner - The "EZ-Tuner" is a homebrew automatic legal-limit antenna tuner that covers all amateur HF bands from 160-10 meters. Using a T-network design and controlled by a BASIC Stamp BS2sx microcontroller, the EZ-Tuner will match at least a 16:1 VSWR for either unbalanced or balanced transmission lines.

S-MATCH Universal ATU - PA0FRI's "S-MATCH ATU" published in RSGB's RadCom March 2003). The Balanced Universal ATU Photographs of ZL2ML's S-Match were added.

New Zealand Vintage Radio Society - A non-profit organisation devoted to the preservation of early radio equipment and associated historical information.

Military Wireless Museum - Military vintage radio collection including spy sets, SOE, SIS, MI6. Classic vintage military radio sets, British, German, Japanese, USA plus other countries.

Freebanders antenna systems - Yagi Quad's and Verticals simple explanations about freebanders antenna systems

OH0Z Aland Island Contest Club - Contest team from Aland Islands

OL7CAV - Czech ham radio organization, renewed in 2004.

Daytona Beach Amateur Radio Association - Since 1959 Giving 48 Years of Service to the Community

BAZ Spezialantennen WiFi Antennas - Wireless Lan Antennas for WLAN 2,4 GHz, HiperLAN 5,x GHz, UMTS, WiMAX a.m.m.

QRSS Keyer - An homebrewed QRSS CW keyer

6-Meter Ham Frequencies - Alan Muir, VE7BEU, on behalf of the Westcoast Amateur Radio Association,(Victoria) is assembling and submitting the 6-meter Repeater pairs in use to the BC Amateur Radio Coordination Council.

Columbia Electronics International, Inc. - Military radio sets for land, sea or air from new current production, unused or rebuilt u. s. military surplus and their accessories and spare parts since 1946 your reliable one stop source.

TANT 136 - DOS program for calculating the performance of a T antenna. Gives loading coil info and matching plus ERP by Reg G4FGQ

Yagi-logper - Yagi-logper is a linux GPL program to model a Yagi or Log-periodic antennas with horizontal cylindrical dipoles.

PSK08 for Spectrum Lab - PSK08 for Spectrum Lab.Small user file to configure the software for slow PSK.

T-Pad / H-Pad Resistance Calculator - This calculator is designed to give resistor values for unbalanced T-pads, and for balanced H-pads.

Easy bandpass filters - Quick and easy bandpass filters for receiver input by George Dobbs G3RJV

Oscilloscopes - basic use and measurements - A 12 pages pdf article about oscilloscope use, calibrating, operator controls and tips on making measurements by NA5N