roof top tower

Helical loop antenna for 20 meters - A Helical Loop Antenna for the 20-meters Band

The Sperrtopf antenna for 2 meter band - By ON4CFC Pascal, describe how to build a Sperrtopf or Sleeve antenna for the 144 Mhz, PDF File by antennex

Dual Loop 80 and 40 Meter  ^pop - A dual loop antenna, ZZ Wave Net HF Wire Antenna Project by VE6VIS. The antenna is basically a full wave 80 meter loop on top and a 40 meter loop on the bottom all supported from a 64 foot center support

A Six element yagi antenna for the 50 MHz - Christoph petermann's df9cy six element yagi antenna for six meter band

Beverage antenna tips - Collection of article and posts on beverage antennas, by N1EU

W4JOH Cobra Antenna - The original Cobra antenna, is a multiband 160 or 80 to 10 meter, designed by W4JOH is built using standard insulated wire of about 14 gauge and fed with 450 ohm ladder line down to the shack into a tuner.

The TubeBug - This site is dedicated to collecting and restoring older professional receivers and transmitters.

HF CW contest calendar Priority listing - Calendar, rules and results of top rated CW HF contests with daily update by LZ1GL

Granta Contest Group - HF amplifier - The Granta Contest Group was founded in 1997 by Mark G4AXX, Colin G4CWH, Simon G4EAG, Andy G4KNO. The Group gets it's name from the River Granta (or Cam), which passes through Cambridgeshire and Essex. Using is a 160-10m "desktop kilowatt" linear amplifier using an Eimac 4CX1000A tetrode

N7LE Central Oregon DX Club - The club was formed at a meeting of a group of hams on a May 1989 afternoon at Jake's Truck Stop in Bend.

T8 Liechtensten 2006 - Liechtenstein 2006, cq ww 160m cw contest, top-band, t9 multi single crew

WAFAR - Western Area FM Amateur Repeater Club - The main WAFAR transmitter site is on the roof of the Civic Opera House in Downtown Chicago, and sends our 2-meter and 440 MHz. repeater signals all over Northeast Illinois.

ARI Altopascio WebCams - Four webcam fom ARI italian ham radio club in Altopascio LU.

CUE DEE - Antenna support engineering, manufacturer of antenna masts, supports, towers, self-supporting towers, telescopic masts, rooftops and wall supports

ICOMM Tele Limited - Largest Capacity of 200,000 MT for Towers & market leader in India with backward integrated rolling & manufacturers of Shelters, V/UHF, Patch Panel Antennas, DIAS & DWDM Equipment

Nicola Tesla autobiography - Free pdf book on Nicola Tesla. He is the true unsung prophet of the electric age; without whom our radio, auto ignition, telephone, alternating current power generation and transmission, radio and television would all have been impossible

Ideas and Projects for QRP - The free pdf book is a compilation of articles congenial to QRP published on 2003- 2005 years at free e- magazine AntenTop. 17 Mb pdf file.

EGAntennes - Distributor of PKW antennas and Reimesch Kommunikationssysteme RF amplifiers. Manufacturer of HF wire antennas Based in France.

Toxic Tops - Online Ham Shack - Stuff - Gifts for the Ham or Amateur Radio enthusiast in your life. Choose from Shirts, Mugs, gifts and more with Ham oriented sayings.

Tower - Windows program for analyzing vertical antennas. This program shows the resistance and reactance to be expected looking into a cylindrical metallic tower over a perfect ground. It gives a useful approximation of the values to be expected in a real-world situation.

ADIF Conversion utilities - Converters available from: LogEQF9, Gemradio, SLog 2.09, Hyperlog 4xx, LogPlus, WJ2O, OH1AA, Toplog

Diplexer - This program expedites the design of lumped-element diplexers using both the lowpass/highpass and the bandpass/bandstop topologies.

A simple VOX circuit - Here is a 3 transistors 6 diodes circuit that is a Voice Operated Tx PTT control as well as an ANTI VOX circuit to stop mis-operation from Rx noise by G8MNY

Interfacing to PC soundcards - General electronic topics on interfacing to PC soundcards by epanorama.net

High Voltage Breakdown Tester - K8CU technical topics article about high voltage breakdown tester necessary for testing of any high voltage components like vacuum tubes, high voltage capacitors, vacuum relay