modulation sound files

A wideband 80 meter dipole  ^pop - This worthy antenna is so simple and inexpensive you will want more than one by N6LF

Using the half-square antenna for low bands - Can’t put up a really high horizontal antenna for 80-meter DXing? Maybe the vertically polarized Half-Square might be the antenna for you.

Broadbanding the half-square on 80 meters - N6LF discusses a simple way to broadband the classic half-square antenna to operate in both the CW and SSB DX windows on 80/75 meters.

An improved 40-80 double extended zepp - Article originally published in ARRL compendium by N6LF revisits the classic double extended Zepp to improve pattern and SWR bandwidth. The DEZepp is essentially two end-fed collinear dipoles.

The Ultimate transmatch - Usage and benefits of transmatch. A pdf document from a QST article made available for novices and beginners by ARRL

Better Feedline Loss Measurements with Antenna Analyzers - Various publications through the years have shown how the SWR measured on a shorted (or open) feed line can be used to calculate feed line attenuation

Let's talk transmission lines - Don’t neglect one of the most important parts of your station!

Getting the most from your tuner - Here is how to adjust this popular tuner circuit so it transfers maximum power to your antenna without going snap

W9OL QSLing pages - Just a page with a few files to help other deserving qrp'ers obtain the qsl they so richly deserve. Includes IRC/GS Charts, DXCC conversion and USSR conversion tables

US Ham Band Chart - A pdf format US band chart, by ARRL

RFSM-2400 Digital Mode - A recent digital radio protocol. Based on a freeware soundcard-based Radio Frequency Software Modem. Work under standart MIL-STD-188-110A. Maximum speed 2400 bit/second. Signal bandwidth: 0,3-3,3 kHz (standard mode) and 0,3-2,7 kHz (non-standard mode).

US grid square map - A pdf file of US grid square map by Icom america

Alinco Manuals - Alinco Instruction manuals on the Internet mostly on PDF format

Ameritron AL-811 manual - Ameritron AL-811 owner's manual pdf file

APLT Communications - Italian ham radio dealer for Icom Array Solutions hyt mfj force12 heil-sound yaesu spiderbeam pkw ameritron acom palstar.

AutoRec - AutoRec is windows freeware time based automatic recorder - player for radio broadcast. Auto Recorder will record or play wav audio files, and execute batch or other executable application programs at scheduled times. The primary use for Auto Recorder is automatic, unattended recording and playback of network or other satellite-delivered radio station program material.

DSCdecoder - DSCdecoder decodes the DSC digital signals from ships and coast stations using the sound card in your PC. You need a suitable MF, HF or VHF band radio receiver tuned to one of the DSC distress and calling channels or to one of the Navtex channels

SlowFeld XP - Free windows program by G3PPT that permits RTX of FeldHell

Fcc Lookup System - The FCC Lookup System software uses the standard FCC data files in an advanced lookup system for matching a call sign to a user. The software creates index files to allow rapid searches without modifying the FCC data file. Available for both Windows and Linux.

LogConv - The new LogConv currently supports ADIF, Cabrillo, CT9, CT10, EQF and TR Log files as input and can output both ADIF and Cabrillo formatted files by ka5wss

T93Y LogPlus to ADIF - Program which will allow you easy migration from logPlus to another logging software. Tested with Logger by K4CY so let me know it you have problem ADIF import to other software.

ASCII to ADIFF - This program will convert comma delimited ASCII files to ADIF format for import into a logging program that supports ADIF import. The program is intended to be used with comma separated text files produced with other logging programs or with spread sheet programs, such as Excel.

MT Hell - MT-Hell software for 16 bit Soundblaster cards. Sends seven parallel tones with careful dot shaping for minimum interference, and transmits a very nice sound by G3PPT

Morse Tone Encoder - Generates Morse tones using the Soundcard. A neat tool for sending out short sequences of Morse tones.

DTMF encoder - Generates dial tones using the Soundcard. A neat tool for sending out short sequences of DTMF tones.