papa system

40 meter 4-square antenna - A permanent working 40 meter system based on a 4-square antenna

A Horizontal loop for 80 meter dx - This 80-meter quad loop system requires only supports of modest height—a better single-element antenna may be hard to find by VE2CV

Radial System Design - Are the lengths of antenna radials related to the height of a vertical? By N6LF

Verticals. Ground systems and some history - Article gives a good overview of the basics and reflects the accepted wisdom from BC antenna work.

FM Transmitting Antenna - The antenna system about to be described here is a superset of the classic "J-Pole" design, a 4-bay J-Pole antenna

Four square phased verticals - TK5EDP 4 square phased vertical system in corse isl.

Logbook of the World - LoTW - ARRL's Logbook of the World (LoTW) system is a repository of log records submitted by users from around the world. When both participants in a QSO submit matching QSO records to LoTW, the result is a QSL that can be used for ARRL award credit.

GlobalQSL - Forget about spending expensive time and big money for QSL cards printing, filling out, sorting and sending. Exchange QSL information system.

Calnet Repeater Group - Calnet a multi repeater amateur radio system serving most of California and parts of Nevada. The Calnet system consists of numerous fulltime linked 440 MHz repeaters connecting San Diego to San Francisco and Lake Tahoe.

SCRAMS - The Southeastern Connecticut Radio Amateur Mobile System

AC4XQ Repeater System - Home of the C3I Amateur Radio Group

Shore Points Amateur Radio Club - Our Club Repeater System serves the Atlantic City Area on three Amatuer Bands

WB8LLY The Firelands Amateur Repeater Association - An association of amateur radio operators and their families in North Central Ohio, that is dedicated to the operation and maintenance of a repeater system that serves North Central Ohio.

Ginlong Technologies - World leading specialist in manufacturing, providing design services for small scale wind turbine systems and parts (<30kW)

Unified Microsystems - W9XT contest card DVK Digital Voice Keyer, morse keyers CW memory keyer, beacon CQ IDer, USB interfaces and more for ham radio operators

BridgeCom - FM Repeaters & LTR Controller Combined manufacturer Dedicated to providing you affordable, reliable and feature-rich communications equipment that Goes the Distance.

PlentiPeppa.com APRS Web server and live streaming web cams - All about my hobbies, Ham Radio, Automatic Packet Reporting System and my live streaming web cams and much more!

K6MVR MVRC Radio Club - The Mt.Vaca Radio Club (Call sign K6MVR ) owns and operates repeater systems in and around Sacramento, California. The systems provide reliable coverage for mobile stations throughout the Sacramento Valley region and beyond to Modesto, Chico, the Sierras, and parts of the Bay Area.

WA6TWF Super System - The Super System has three repeaters on Santiago Peak, one in Anaheim, Orange, Santa Ana, Palos Verdes, L.A., Mt. Wilson, Fullerton, Pleasants Peak, and two in downtown Honolulu. Most of these repeaters have autopatch.

Ipox5 radio link system - Ipox5 is the freeware version of a commercial radio linking system, designed for amateur, nhw, emergency communications etc. It is optimised for mobile broadband and difficult IP links. It allows PC access, and up to 100 users on your link at one time. Usefull for multiple PMR446 use on very large sites. Works under Windows 98, XP, Vista, and Linux (under Wine)

Trusted QSL - Open source libraries and utilities to support using digital signatures for Amateur radio QSL system information like eqsl and lotw. Available for windows macos e linux.

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.

QSL Maker  ^pop Priority listing - Freeware Windows QSL card printer software. This tool will let you create you own QSL cards importing pictures and customizing colors and other cards aspects. Print directly to your ink-ject or laser printer. Runs on windows systems by wb8rcr

DXCat - DXCAT is a shareware program dedicated to the Yaesu FT900. It is a CAT system computer control program which enables you to have a total control on your transceiver. by F6GQK

FreeSCAN - Freeware windows program for programming the Uniden SC230, BC246T, BC330T, BCD396, BC15T and BCD996T scanners. FreeSCAN allows to download and uploading programming, remote control the scanner, log hits, and supports printing out of systems and groups.