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Electronic Kits and parts

Your world-wide source for Heathkit, Drake, Collins and Dentron amplifier parts & upgrade kits

This is from a posting on the BARK PBBS Keith, WB2VUO

Ham Radio Android Apps to displays your current QTH locator on Google Maps using the GPS or WiFi / network location.

Icom IC-706 Extended receing mod From OH6LGM

TS-850S typical faults and solutions

A beam fractal antenna for 20 meters band

Unique and Hard-to-Find accessories for Amateur Radio. Featuring Plasti Dip products, DK9SQ Masts, Wire Antennas, AEA Antenna Analyzers and RF Connectors too!

Amateur radio products and support for rig experts brand in the USA. The new USA RigExpert SD, RigExpert Plus, MixW Software

A multiplatform software oscilloscope and logical analyzer software that acquires data using an arduino or a parallax USB Oscilloscope

HFUnderground.com is dedicated to documenting longwave, mediumwave, and shortwave stations, including broadcasters, utility/military stations, pirate radio and spy numbers stations.

Amateur Radio and Commercial Radio licencing exam practice. You can visit the Technician, General or Extra license pages where you can pick and choose the topics to practice so you can build up to a complete exam.

Video, how to build a 130 Watt Dummy Load for HF amateur radio

The half wave dipole antenna is a simple and practical antenna model that consists of a half wavelength long centre fed conductor.

6 element super duper moxon antenna for the 144 MHz, a modified HAARP Antenna projetc

Sales CB Radios and accessories online

East Cost, deliver kenwood amateur radio parts

Antenna adaprter mods fot the Kenwood TH-F6A or TH-F7

Amateur Prefix Maps by UT0UM updated with ARRL DXCC and ITU changes, available for download in PDF

Design for a very low cost 6-digit frequency counter module using of the shelf components

The CQ Callbook makes it easy to find QSL information from web-accessible sources like address and manager databases and country-specific callbooks. The search procedure is quite easy: just enter Callsign and click on the Search buttons.

The QRP choke balun described utilizes a high permeability ferrite rod and RG-174 coax, aiming to present high impedance to common-mode currents across the HF spectrum. The construction involves winding as many turns of RG-174 as possible around the ferrite rod, then encapsulating the assembly with hot glue. This design prioritizes maximizing inductance to suppress unwanted shield currents, particularly in unbalanced antenna configurations. While the balun's effectiveness is subjectively reported as good, a potential design consideration involves the dielectric properties of the hot glue. This material could increase turn-to-turn capacitance, potentially reducing the balun's performance at higher HF frequencies, though this specific aspect has not been formally tested by the author, _AA5TB_. The project serves as an illustrative example of a practical, junk-box construction rather than a rigorously engineered solution. Photographs detail the evolution of the balun, from the initial winding process to its integration within a _B&W dipole center insulator_ and final camouflaged assembly.

Over **10 million** antennas and flags have been sold worldwide by Firestik Antenna Company, a veteran-owned manufacturer specializing in both CB and amateur radio communication products. Their offerings include a range of antennas, mounting accessories, and coaxial cables, designed for various mobile and fixed applications. The company provides technical support and maintains a network of dealers for product availability. Firestik products are known for their fiberglass construction, which is evident in their _Firestik_ and _Firefly_ antenna lines. The company also produces unique items like the "342 mile per hour Firestik flag," highlighting their diverse manufacturing capabilities beyond just radio antennas. They emphasize their commitment to quality and customer service, including direct technical assistance. The company is located in Tempe, Arizona, and operates under the registered trademark of _Pal International Corporation_. They actively protect their brand, including variations like Firestick and Firestix, ensuring proper representation of their products in the market.

An introduction to antennad including a DIY assembly instruction for a A Ground Plane Antenna for NOAA Weather Stations

Cruise Ship and Maritime Monitoring Frequencies - cruise ship frequencies maritime scanning radios vhf uhf

Live Walton County Sheriff, Fire, and EMS Radio

Yagi Calculator is a free Windows program that also runs well on Linux, Ubuntu 8.10 under Wine, to produce dimensions for a DL6WU style long Yagi antenna. Long yagis are commonly used from the 144MHz amateur band to the 2.4GHz band.

PD0AC blogs post about the Yaesu VX-3 handheld transceiver

VQLog 3.1 - 782 is a shareware logbook program designed for Windows operating systems (95, 98, NT, 2000, ME, XP, Vista, 7, 10, or later), supporting resolutions of 800x600 or higher. It can also operate on macOS and Linux via virtualization software like Virtual PC for MAC, Oracle VirtualBox, or VMware. The software facilitates QSO access by date, callsign, prefix, square, DXCC, and other parameters, offering robust import capabilities for ADIF, Cabrillo, and ASCII files from various contest and logbook programs. Key features include comprehensive award tracking for DXCC, WAZ, WAC, WPX, WAS, IOTA, TPEA, DIE, VUCC, 100EACW, and up to 30 user-defined awards. It generates customizable summaries and graphical statistics for QSO activity, DX contests, Most Wanted Squares (MWS), propagation openings, and prefixes. VQLog supports DX-Spot reception and processing from DX-Cluster and PSK-Reporter with programmable warnings, integrates with callbook services like QRZ.COM and Buckmaster's CD, and offers online lookup. Electronic QSL and log upload support extends to LoTW, eQSL.cc, Clublog, and DXMAPS, with real-time updates for online logs. The program provides extended QSO information for VHF-DXers, including separate TX/RX frequencies, start/end times, propagation modes, and specific entry fields for MS, EME, and Tropo. CAT support for rig control and interfaces with ARSWIN and PstRotator for azimuth/elevation control are also included.

This page is an introduction to the PocketDigi utility for PocketPC PDAs. Allow PSK, RTTY and CW operation from your PDA by n0hr

80 metre ceramic resonator VXO CW Transmitter by VK1PK

Astron corporation power supplies and accesories

A half-sized Hentenna designed for unique performance in compact spaces. Initially built in 2003 for monitoring a local 146.97 MHz repeater from a basement shop, the antenna proved highly effective, operating at just 200mW. In 2005, it was adapted for use in a challenging river-bottom location, delivering reliable performance on a 2-meter band with 5W. Despite its compact size, the Forktenna demonstrated excellent results compared to a full-sized Hentenna, making it an intriguing option for many hams.

A 40-meter antenna that provides good local and regional coverage during the day and good DX capability at night

This note looks at the antenna and antenna model for the 40 meter Moxon Yagi designed by Dave Leeson, W6NL. The performance of the antenna, through the model, will be explored in several typical settings.

A multiband wire antenna with a twinlead feedline that can be easily tuned in several bands, witha 33 ft per leg you can have a 40 to 10 meters band coverage

The Raspberry Pi Repeater Controller Project goal is to develop a low cost, low power, but feature rich duplex repeater controller suitable for setting up a temporary or emergency repeater systems with radios that can be run on portable power

Land communications and marine antennas

A project for a four element cubical quad antenna for 144 MHz in portuguese

Live realtime satellite tracking system show current status of amateur radio satellites, ISS tracking is also provided by showing ISS Visible Passes based on your own location. This web site show the International space station live position and can be used as an iss tracker app to determine future satellite and ISS transit over your location.

J-pole antenna made easy using a twinlead by W4ZT

An homebrew crossed Yagi antenna for two meters band based on DK72B design with pictures, detailed description and tricks by Barry Zarucki M0DGQ

IC706 Specifications by universal radio inc

A simple current balun for the FM broadcast band

Different band dipoles can be put together with a single feed, learn how by W8HDU

CFRB Canada - Toronto, Canada web site.

A circuit that connects an IBM compatible personal computer, running TR Log or CT (etc.) contest logging software, and Kenwood transceivers equipped with serial control ports. CW keying is also provided in this RFI filtered interface unit.

Radial systems for elevated and ground mounted vertical antennas by SteppIR

IC-2720H it will receive fine on 220MHz amateur band, but will NOT transmit there

Ham Radio On line shop, kenwood yaesu icom alincon ten tec dealer, antenna rotors, antennas, antenna mounts, microphones, antenna mas, receivers and scanners based in Essex England Uk