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High Gain Wi-fi Helical Antenna by AB9IL

General ham radio related items

A site dedicated to portable operation in the great outdoors!

Australian dealer for UHF CB radios, Amateur Radio HF VHF Radios, GPS navigation systems, two-way radio, cordless telephones, radar detectors, marine electronics, amateur radio gear and many other consumer electronic products.

Quality communication accessories for motorola, icom, kenwood and nextel radios

Homebrew a dual band vertical antenna

Includes some schematic diagrams

Theory of the classic Folded Dipole by G3TXQ

For those who are interested in telegraphy, for those who would like to learn it, for those who love it, and for those who want to improve their skills in it

Notes on Icom IC-756Pro II and IC-746Pro by I0GEJ

This simple and cost effective interface circuit is designed for use with any ICOM amateur radio equipment with CIV interface

All about homebrew, antennas, accessories for shack, digital tecniques and more..

Include 6W2SC Online log

Beacons recorded audio files by kl7fdq

The DL4MEA Power Meter

A complete guide to magnetic loop antenna construction, with analysis of multi-turn and single-turn magneti loops, and and insight on choosing the optimal capacitor, or homebrewing your own butterfly capacitor

This FAQ is made from the archives of the FT100 mailing list based on the OneList service.

Maps and propagation indices

Similar to Tiny 2 but this three element direct connect antenna utilizes a reflector and a director to achieve gain.

Arab Amateur Radio orum. Transceivers , Antennas, Educational, Software, Digital Communication and more.

This Database Lookup will return the amateur radio call sign holders which currently hold an active license and will be limited to the zip code specified You must enter at least three digits of the desired zip code.

The Online Callbook for Internet Explorer makes it easy to find QSL information from the most popular HAM-radio web sites, such as QRZ.COM, ARRL.ORG, RAC.CA, QRZ.RU, BUCK.COM and OCTAVIA.COM,

EchoMac is a client program for OS X that allows connection to the Echolink system

Information on equipment manufactured by the Bird Electronic Corporation, wattmeters, RF loads, switches by I0JX

In this project, you will make a simple low-power broadcast-type circuit, using a crystal oscillator integrated circuit and an a collector modulated AM oscillator.

conversion of low band VHF AWA 25M-1 carphone onto 6 metres.

QRG_DB is a database for the Palm OS computer to control a Yaesu FT-817 Transceiver via the CAT interface

A switchable Magnetic Transformer for Transmitting for various impedances

The _Italian VHF Beacons_ resource provides a detailed listing of active and QRT amateur radio beacons operating across VHF, UHF, and SHF bands within Italy. Each entry specifies the beacon's callsign (e.g., IQ1SP/B), operating frequency (e.g., 144.411 MHz), QTH locator (e.g., JN44VC), effective radiated power (ERP) in watts, and antenna configuration (e.g., Big Wheel, 4x Dipole, Yagi). This data is crucial for radio amateurs involved in propagation studies, equipment testing, and long-distance (DX) communication on these higher frequency bands, offering fixed signal sources for monitoring. This compilation, last updated in October 2005, serves as a historical snapshot of Italian beacon activity. For instance, it lists several 144 MHz beacons with ERPs ranging from **0.1W** to **10W**, and higher frequency beacons such as I8EMG/B on 1296.880 MHz and I3EME/B on 24192.132 MHz. The inclusion of QRT (Quiet Radio Teletype) status for many entries indicates the dynamic nature of beacon operations over time. Users can utilize this information to identify potential signal sources for band openings or to calibrate their receiving equipment against known transmissions.

Pittsburgh's largest ham radio site.

This is Wimpey site,a full featured Ham Radio,CB,short wave police scanner and much more ARS KA4PNV

Triband DK7ZB VHF Yagi antenna for 6 m, 4 m and 2 m with a single feedpoint

club station VK2MB, Manly Warringah Radios Society, on northern beaches of Sydney, Australia.

Homepage of the vero beach amateur radio club, w4ot

Search for Ham Radio in usenet.faqs

Belgian question pool by on1dht

Primary QSL Managers by NW3K

Diplexer is a passive device, a special filter circuit that seperates 2 different bands, not to be confused with the duplexer that usually separate 2 different frequencies on the same band.

Sometimes many VHF-UHF modern transceivers have problems with BROADCAST Interference and CROSS-modulation from FM commercial broadcast stations this article shows a simple Batteworth HI-Pass VHF Filter to reduce this problem

HB9MTN loop motor control software. For motor control, either Centronics, RS232 or USB ports can be used, for CAT-Control the RS232 or USB ports.

Meter capable of accurately measuring low levels of RF power

In response to a question about Numbers Stations, their origin and purpose, the following information should be of interest.

Florida DXers meet every other month in Ft. Lauderdale to discuss DX, antennas and such. We host the DX forum at the Tropical Hamboree in Miami the first Saturday in Feb.

VE2ZAZ and distorted audio in SSB on some models prior 2006

To build a Band Decoder to drive our remote relays, we need to supply the band information from the rig to the decoder

Honduran amateur radio club founded in 1958 in San Pedro Sula, Cortes.

A free radio station that is transmitting world wide on several shortwave frequency 's with loads of pirate and freeradio information.

Frequency coverage: 3.75 MHz to 4.00 MH transceiver for 75 MHz band

Modeling an 80/40/20M Fan Dipole for DX by Larry Banks, W1DYJ

Homebrew VNA capable of both transmission and reflection measurements from 0.05 to 60 MHz