ara 2000

2-Element-Yagis for HF  ^{updated  pop} - 2-Element parasitic Yagis for the Shortwave-Bands 10-12-15-17-20-30m. The antennas are feeded with the DK7ZB-match. A quarter-wave choke of coax is grounded at the socket.

40-80 Half-Extended Double Zepp Antenna - A dual-bander for 80M and 40m. An Extended Double Zepp (EDZ) is a 5/4 wavelength center-fed dipole. This article will introduce the Half-Extended Double Zepp (HEDZ) which has characteristics that a lot of amateur radio operators should find quite interesting

3 Element cubic quad for UHF - Article in spanish with design and descriptio of a 3 elements cubic antenna for UHF

Antena Multibanda Colinear para HF - A W5GI antenna description in spanish

Use of tripods to assemble and balance big antennas - Here is a way to ease assembly and balancing of a large antenna. The elements and boom are assembled separately in most cases. Once they are all together set up 2 tripods in the assembly area and put the boom on them.

Antenna Gain Comparison System - This device goal is to optimize homebrew antenna for the V/UHF band. This tool, is based itself on the simultaneously comparison between two antenna, directly in dB. by IK0BDO

G4LIP G8P - Parallel Lines Contest Group - Home page of the parallel lines contest group - g4lip/p

TARA's PSK Rumble Rumble Page - Sponsored by TARA Troy Amateur Radio Association The worlds very 1st. PSK contest

TARA RTTY Sprint - formerly called TARA RTTY Sprint

TARA's RTTY Melee - formerly called TARA RTTY Sprint

Morse Runner - Freeware contest simulator for Windows 95/98/ME/NT4/2000/XP Copyright (C) 2004-2006 Alex Shovkoplyas, VE3NEA

ARI Taranto - ARI section Taranto

CE2GVM Radio Club Gaviotas Chile - Radio Club Gaviotas, Vina del Mar, Region Valparaiso, Chile, CE2GVM, radioaficionados de Vina del Mar, Diploma RC Gaviotas, telecomunicaciones, licencia, radioaficionados CE, radioaficionados XQ, Novicio, General, Superior, CW, DX, radio clubes

RF HAMDESIGN - An engineering oriented organization specializing in the design and manufacture of high performance parabolic antennas, 3dB high power RF couplers, Antenna power splitters, directional RF couplers and more items for RF transmission from HF through Microwave frequencies.

NDB Weblog - Many NDB radio enthusiasts publish their reception logs on the web. A completely separate system designed for individual listeners to make their own logs and obtain statistics on NDBs, DGPS and now Navtex Stations they have received. Log listings can be exported in a multitude of formats and then emailed to the NDB List

glfer - glfer is a program for reception and transmission of QRSS/DFCW signals. It is composed of two main parts: the spectrogram window, where you can see the spectrum of the received signal vs. time the transmission functions, to emit cw characters at a slow but precisely controlled speed, using the QRSS (slow CW) or DFCW (Dual Frequency CW) modes

Log2000 - Log2000 is a program for logging and tracking QSO's, creating and printing QSL's and QSL labels. Designed for Windows 95/98, Windows NT and Windows 2000.

Smart Morse - Morse code tutoring program for the Palm powered PDA. The main feature that separates Smart Morse from other programs of this nature is the fact that this program learns about you as you practice

EasyTuner - Easytuner id an excel spreadsheet that tunes your radio. Works with all Kenwood and Icom receivers and transceivers that are computer-controllable. Sets receiver and transmitter frequency and mode

TS-2000/B2000 Memory Control Program - This program is for downloading, uploading the memory channels and various settings on the TS-2000(X)/B2000. To write data to or read the data from the TS-2000(X)/B2000 memory, an RS-232C straight cable is required. Runs on Windows 98.

WINRAD by I2PHD  ^{updated  pop} - Winrad is a free software program designed to implement a Software Defined Radio (SDR), meant to run under Windows XP, Windows 2000, or Windows 98SE. In a nutshell, it accepts a chunk of up to 96 kHz coming from a complex mixer in form of two signals, I and Q, fed to the PC sound card.

SB220 SB221 arcing problems improvements mods - This article explores the claim an amplifier might arc from a parasitic oscillation, damaging capacitors, bandswitches, or other components.

IK5MEN HF amplifier 10-160m. - Italian page including pictures schematics diagrams of an home made linear amplifier using four EL509 in parallel. Output power is about 700W.

Filters and Ferrites in EMC - This article is about the characteristics and use of various filters and ferrites for solving amateur radio electromagnetic compatibility problems involving breakthrough of amateur signals into domestic equipment such as television sets, video recorders stereo sytems etc.

Radio Interfacing - Serial cable connections tables, CW key and PTT interfacing, Using USB Ports or parallel ports