pomona pd

A 1:1 Coaxial Balun  ^pop - PDF article on a coaxial 1:1 balun by I0QM

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

Measuring Cable Loss - Improving measurement accuracy when low-power analyzers are used.

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!

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

Log Periodic - MSDOS program calculates dimensions of log-periodic antennas by YU1AW

Ultimate Portable HF Vertical Antenna - A light and compact antenna that is easy to build, and easy to find parts for. Band coverage is 60 through 10 meters.

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

ARRL Contest Forms and Rules - ARRL contest rules, forms and log sheets in pdf and ascii format for ARRL contests

SP DX Contest - Polish Amateur Radio Union contest

SPDX RTTY Contest - Rules and Results SPDX RTTY Contest

LA0FX Contest Logs - Offer various contest logging programs, for scandinavian contests, SPDX, PAXX, OK/OM Contests, IARU VHF Contest, Portugal Day DX contests, HSC contest, various polish and norwegian local contests and other utilities

ARRL US amateur radio bands - Color US ham radio band plan in pdf format edited by ARRL

ARS Statistics - Updated statistics of US ham radio lincences By State, Class, Upgrades, Renewed, Expired

Radio Sport Canada Zone to Zone propagation - ZoneProp produces a 40 zone by 40 zone matrix that is updated hourly at approximately 20 minutes past the hour. The intersection between a row and column gives the band on which a constestant in the zone represented by the row is mostly likely able to contact an contestant in the zone represented by the column.

PD5DP Ham Radio Manuals - Another collection of manuals to download offered by PD5DP. Includes ham radio manuals for Icom, Kenwood, Yaesu, Diamond and AOR products

FT-897D Modification sheet - Lot's of FT 897 modifications in a single PDF file

Printable SWL QSL log template - Free printable template for QSL log reports. Mainly for shortwave listening. Pdf file by Mike Chambers

RadioDXCluster - MacOSX configurable terminal software used to control your TNC (Terminal Node Controller) to connect with your local AR-DX Cluster using your radio. This program combines features contained in MacTNC, a TNC control program, and NetDXCluster (formerly MacDXCluster), similar software that accesses DX Clusters via the Internet rather than a radio link.

Amateur Radio Repeater Directory - Amateur Radio Repeater Listings at your fingertips for the first time on your PDA

Using ferrite for interference suppression - Excellent guide to using ferrite cores for interference suppression. Understanding and Solving RF Interference and Noise Problems by Jim Brown K9YC Audio Systems Group, Inc. PDF File

Kenwood TS830S Survival Guide - Excellent collection of TS 830S documents collected from the web and other sources by DL9AI, PDF File

The MGM Interface - General purpose RTX-PC sound card Interface for MGM (Machine Generated Modulation)

CW Filter - I0QM Gaussian CW Filter page This Filter for the weak signals is the evolution of the simple Universal State filter, already published on "Radio Rivista", the 8/1993