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Amateur Radio, Citizen's Band Radio, Commercial Radio, General Electronic items, Marine Radio, and Short Wave Radios.

The Double Bazooka Dipole is a very efficient single band antenna which is very quite, and does not require the use of a balun. This antenna consists of coax (RG58) or other 50 ohm type with the shield split at the center and the feedline attached to the open ends

Multiband Center-Loaded Off-Center-Fed Dipole (CL-OCFD) antenna that work on 80m 40m 30m 20m 15m 10m. The Center-Loaded Off-Center-Fed Dipole (CL-OCFD) antenna, developed by Serge Stroobandt, offers a versatile solution for amateur radio enthusiasts, covering multiple HF bands (80, 40, 30, 20, 15, and 10 meters) without the need for an antenna tuner. This innovative design utilizes a capacitor for resonance on the 80-meter band and a resistor to manage static charges. The CL-OCFD enhances bandwidth and simplifies operation, making it a significant advancement on OCF Dipole design.

Demonstrates the construction and performance of an updated ZS6BKW multiband dipole, a variant of the _G5RV_ antenna, specifically designed for HF operation. The article details a real-world installation using 13.5m copper wire elements and 12.2m of 450 Ohm ladder line, configured as a sloping inverted-V with the apex at 10m and ends at 4m above ground. It covers the critical aspect of impedance matching, incorporating an 8-turn choke balun at the feedline transition to RG-58U coax to mitigate RF common mode current. Measurements confirm favorable SWR readings below **1.3:1** on 7.1 MHz, 14.11 MHz, 18.06 MHz, and 24.8 MHz, indicating effective resonance across 40m, 20m, 17m, and 12m bands. The installation also shows usable SWR dips on 3.55 MHz (5:1), 29.02 MHz (2:1), and 50.84 MHz (3:1), extending its utility to 80m, 10m, and 6m with an antenna tuning unit. Initial on-air results report clear reception of stations over **5000km** away, validating its DX potential.

Australian dealer, HF linear amplifiers, power supplies, baluns, HF UHF yagis and verticals including multiband HF verticals.

An easy to make trap dipole antenna for 40 and 20 meters

Two mods for the Yaesu FT-950

A delta loop wire antenna plan for the 7 MHz band (40 meters) that is quick to setup and work with

Low (or zero) Cost Accessories for the FT-817 Portable QRP MF/HF/VHF/UHF Transceiver

Four band lightweight antenna, that rolls up into an small Grundig antenna case by N0LX

KD6WD introduce moxon rectangles, and in particular explains how he built a moxon antenna for 15 17 and 20 meters band with excellent pictures

A very easy to use program to decode DTMF dial tones found on telephone lines with touch tone phones. The DTMF Decoder is also used for receiving data transmissions over the air in amateur radio frequency bands.

Large picture and technical specifications by rigpix

An antenna for the 2-meter band, made by sliding coax insulator braid over a glass fiber bicycle safety flag pole

Building a Dummy Load and Measuring Power Accurately by Ken, K4EAA

Cleverscope PC based oscilloscopes, spectrum analyzers and signal generators

A wire moxon antenna plan for the 7 Mhz

Helix antenna calculator, to design and make helix antenna plans

RFI Kit, ferrite cores, baluns, loop antennas, antenna tuners and various accessories

Frequency table for 900Mhz phones

Product review & short takes columns from QST magazine

This article describes a low-cost, low-to-moderate power dummy load, which presents a 50-Ohm resistive load from HF through 440MHz.

A full line of repeaters, modules to build repeaters, and accessories.

This type of antenna has same performance as a dipole, but requires only one single mounting point

German Ham radio dealer for hf radios by Icom Yaesu Kenwood Alinco and Alan

Macintosh audio spectrum analyzer that allows the user to view live audio in a standard frequency plot, a stereo oscilloscope view and a waterfall display

Rogerbird's Radio Modification Information, HR2510 or Lincoln Frequency Conversion Instructions, Mic Gain Modification, and more

Maintenance and repair of a Cushcraft R5 vertical antenna

Build your own cobweb antenna followning M0MRR instructions and notes

K6SGH hamloop antenna for 15 meters band

Lookup callsign histories & applications, available Amateur Extra callsigns, vanity callsign predictions, and more. Updated from FCC data several times a day.

This web player allow to listen to the Anne Arundel County Police and Fire Live Scanner Radio Feed

Paddles, Keys, Filters, Antennas

A freeware program to dig out weak signals buried in noise, functionally similar to the excellent FFTDSP of AF9Y, but with the added bonus of real time audio filtering of the incoming signals. Just point and click with the mouse, and the selected signal will stand out from the QRM and noise.

Windows 95/98 based program to decode PSK31 mode by AE4JY, freeware

This page describes a homebrew 80/40 meter trap vertical antenna. Includes an interesting antenna raising system that allow easy setup and tuning.

This is a site for Kingsport,Tenn police and 911 a good site to check out. You must register at live365 but it is worth it.

Cobra Electronics is known the world over as a manufacturer of superior quality communications and electronic equipment

Reducing noise to your antenna can gain your aerial performance, learn how.

A 6 m 50MHz J-Pole antenna by VKADC

Info on this discontinued HF Transceiver

D-RATS is a small application designed to provide data communication capabilities with D-STAR radios. It supports text chatting, file transfers, position reporting and mapping, and much more! It is written in Python using GTK to run on multiple platforms.

Manufacture CATS antenna rotator and digital controls. Service, stock, and provide parts for top quality AMERICAN-MADE antenna rotators from companies such as Alliance, C.A.T.S., CDE/Hy-Gain, and Channel Master, both young and old.

Some thoughts on a "hardware-store special" 2-meter quad, and a modified quad for 2 or 10 meters by K3MT

Shakespeare Composites & Electronics Division manufactures a complete line of unmatched CB, CB marine, and military antennas for a veriety of applications.

A multiband stealth antenna. Tuner is required. The antenna is made from a $15, 500 ft roll of black #14 insulated stranded wire, about 120 small black wire ties, and maybe 30 or so large black wire ties.

Merging Internet technology with Amateur Radio holds great promise. This article discusses the authors experiences in putting several Internet Remote Base stations on the air. By Stan Schretter, W4MQ, Brad Wyatt, K6WR, and Keith Lamonica, W7DXX

Freeware amateur radio transceiver control program tested with IC-756 Pro.

The multi-purpose commercial FAX, RTTY / SYNOP / NAVTEX and SSTV program for Windows 95, 98, 2000, NT 4.0, XP, Vista and Windows 7

more limited space antennas