Search results

PocketSat3 satellite tracking software for iPhone, iPad, and Android devices

Bird Technologies supplier of RF products, like RF Meters, Bird 43, VNA, Spectrum analyzers, attenuators, transmitters combiners, dummyloads, terminators and replacement parts

conversion of low band VHF Philips FM-828 E band down to 6 metres

The Metropolitan Amateur Repeater System

Basic of shortwave antennas

Service manual in PDF Format for the Yaesu FT-7800 transceiver

A portable amateur radio station which the radio amateur can take when asked to go to an event which needs support with radio communication.

Battery problem with TS-570

Ham Radio Class On-Line. A complete On-Line Course for the Technician, General or Extra Class amateur radio license.

Ferrite rod antenna or aerial, a form of RF antenna that is widely used in RFID and transistor radio applications.

A power line noise eliminator designed to eliminate QRN expecially on 40 meters band.

Suppressing noises from your plasma TV or other unwanted signal sources

SDL is a dedicated contest logger for SWLs. It's good for all the major international contests and for dozens of others worldwide. SDL is fully working and unrestricted, and is distributed as freeware. It links to Icom, Kenwood and Yaesu radios to follow band and mode changes.

Part 2 - Ten-Tec Jupiter CW copying and keyboard transmit

W0IPL experiences with Ten-Tec Jupiter

Ethiopia

An home made Butternut HF9V clone antenna by OH2GVB

Manufacturer of led digital clocks, digital timers, countdown clocks, electronic kits, audio switches, binary clock, telegraph keys, and cool gadgets.

A 70cm and 2m 6 elements yagi antenna plan based on the IEEE Transactions on Antennas and Propagation

Extension to an existing fan dipole originally modeled for 40 20 and 6 meters. This modification will add 80 15 and 10 meter bands.

Open-Wire/Twinlead Antenna Switch

Yaesu FT-450, FT-950, FT-2000, FT-5000, FT-9000 backup and restore Program for win32, requires login to Yahoo Groups

An easy portable VHF antenna to build for ARES - RACES work is the 300 Ohm Twin Lead JPole antenna

This small, light weight digital SWR and power meter uses an Atmel AVR Butterfly demo board and a Stockton type directional coupler.

For macOS users engaged in amateur radio operations, a robust logging solution is essential for tracking QSOs, managing contest entries, and handling QSLs. RUMLog addresses these needs by providing a fully featured logbook program designed specifically for the Apple ecosystem. It integrates capabilities such as transceiver control for popular Icom, Elecraft, Yaesu, and Kenwood rigs, CW keyer interfacing, and real-time DX cluster monitoring. The software also includes mapping functions, callsign checking, and extensive import/export options for various log data formats. RUMLog's design supports both general logging and specialized contest operations, offering tools for efficient entry and submission. Its QSL handling and printing utilities streamline the confirmation process, a critical aspect for award pursuits like _DXCC_. The program's ability to interface with a wide array of transceivers via _Hamlib_ or proprietary protocols ensures broad compatibility, allowing operators to leverage its features across different station configurations. The free availability of RUMLog makes it an accessible option for macOS-based hams seeking a powerful logging utility.

A Tribute to Morse telegraphy and resource for wire and wireless telegraph historians and key collectors

Audio setting and improvements for Yaesu FT-2000 by k6jrf

This little project will make a portable 28 Volt DC power supply using two 12 Volt, 4.5 Ah rechargeable lead-acid batteries

Calculate power loss depending on coax cable you use

a methodology for connecting multiple LF/MF/HF receivers to a single antenna via readily available and inexpensive 75-ohm TV cable.

Packet-Radio-Controller for amateur radio, CB and commercial applications. Data radios (transceivers), receivers and transmitters for high speed data communication Assemblies for satellite ground stations, special receivers and transmitters.

The GM4JMU Shortened 7Mhz Dipole

Sound Byte is a voice keyer for contests as well as general ham radio use. Windows and Mac, commercial by Black Cat Systems

Key your transmitter from the tone output of a Morse Code generator program

An end fed 20 meter half wave antenna

This page describes a DC to DC voltage converter, pretty simple, for currents up to 500 mA by sv1bsx

A High-End UHF Preamp for the VHF/UHF Dongle

Laws, rules and regulation on scanning expecially in the usa

The Folded Dipole is not used much amongst Radio amateurs, probably due to the fact that this antenna uses twice as much wire as a single-wire dipole.

DK7JC Morse Key Collection

How to build a simple WSPR beacon using the Raspberry Pi for the transmitter

NUE-PSK Digital Modem A digital modem for PSK31 field operation, without using a PC

FT-847 Specifications

3 band mobile antenna - 10m full size wave/4 whip - quick tilt-down system for 20 and 15 m loading coil change by IZ7DJR

Analyzing FCC amateur radio license issuance data, this resource presents monthly graphs and raw numerical statistics detailing the number of new and upgraded amateur radio licenses. The primary focus is on the impact of the Element 1 Morse Code test removal on HF privileges, specifically observing the transition rates from _Technician_ to _General_ and _Extra_ class licenses. Data is sourced from _QRZ Archives_ and processed using a custom Perl script to tally "Issued" licenses each month. The presented data, available in graphical, tabular, and raw XML formats, clearly illustrates the "spike" in General class upgrades following the rule change. It also highlights a consistent rise in new Technician licenses observed in March of both 2006 and 2007. While the dataset currently extends back to January 2006, providing a limited statistical snapshot for long-term Technician trends, it effectively captures the immediate climb in General class licenses.

Chuck Dachis author of radios by hallicrafters. common/unusual Hallicrafters, wanted, FAQ, links, and other treasures

VHF UHF diplexer by G8MNY

VA7ST page about the Yaesu FT-2000

Six metre enthusiasts might like to experiment with this ‘Zig-Zag’ four-element vertical for lofts. Brian Williams, GW0GHF

A moxon rectangle for 50 Mhz band