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The website provides a free to download large Jpeg DXCC map with amateur radio prefixes and CQ zones. It is a valuable resource for radio amateurs looking to identify DX entities and zones for their operations.

Alan Cobra Uniden President Galaxy and more microphone wiring diagrams

Delta loop and vertical antenna plans with translation in italian

This is a web receiver link page with web receiver informations.

The project details a DIY SWR/Wattmeter designed around an _Arduino Uno_ shield, providing capabilities to measure RF power from 2 to **200 watts** and Standing Wave Ratio (SWR) for HF amateur radio bands. This construction features a compact design, integrating the measurement circuitry directly onto a custom PCB that interfaces with the Arduino Uno microcontroller. Key components include a directional coupler for sensing forward and reflected power, precision rectifiers, and analog-to-digital conversion for processing RF signals. The Arduino firmware handles calibration, calculations, and displays the results on an integrated LCD, offering real-time feedback on antenna system performance. The design prioritizes simplicity for homebrewers. Performance specifications indicate accurate readings within the **2-200W** power range, suitable for typical QRP to medium-power HF operations. The project provides schematics and a basic overview of the software logic.

Roy G4WPW has collected one of the most complete and interesting pages for microphone connections schemas and wiring. Includes Kenwood microphones schematics as well as Yaesu Icom Alinco Adonis Drake Heil JRC MFJ schematics

Discone antenna deisgn program by K5DKZ

This Test Tone Generator (TTG) turns your PC into a function generator and enables you to demonstrate, test and tune sound systems, create sound effects and a whole range of other uses to suit your needs. It can also be used for educational purposes.

Provides information about how to get a ham radio license, with reference links to ham radio societies.

Windows contest logging software with multiple functions like antenna rotor control, dx cluster, cat control, voice and cw keying, supports many data modes, qrz lookup, pirint qsl and labels, mapping and more. Donationware software.

A 6 Mb PDF file of CQ Zones and ITU Zones and prefixes made available to download by Icom America.

The VTDATA software package is a complete vacuum tube manual on your computer. It has all the information you'd expect in a tube manual. VTDATA's database also includes vacuum tubes of historical interest, such as the early "two digit" types (45, 80, etc.) and hi-fi audio types.

This page discribes microphone wiring connections for most UK and foreign radios. Most U.S. radios are "Code Type 2".

UV-5R models comparison chart

Complete introduction to amateur radio, excellent resource for beginners.

World time zones map with current time

This antenna tuner is a multi-type matching system in the same box, which includes L - Pi and T networks.

Frequency table for 900Mhz phones

Complete tower system incorporates rotator mount, and lateral support collars. You never have to climb again - and forget the hassle of tilting over to work on large arrays. The "One Man Tower" is the strongest dmall footprint free standing self erecting tower in the world

A DIY discone antenna project made to improve receiveing performance of an RTLSDR receiver.

WinTone v2.02 is a windows DTMF Decoder, run on old windows versions only.

The ITU and CQ Zones Map is a printable two-page PDF provided by Icom, displaying the world divided into ITU and CQ Zones. The purpose is to assist radio amateurs in identifying and understanding these zones for communication purposes.

Exaustive introduction to radio wave propagation, includes a very detailed glossary on common propagation terms, composed by AE4TM.

PDF resources containing information on low cost ssb,am,cw circuits, which are useful for beginners.

Easy to use double tone IQ-generator for testing direct conversion SSB-transmitters based on phasemethod etc.

These are 200 Morse Code QSO`s which might typically be heard on the HF bands.

Double tone generator for testing intermodulation

Audio Kit is a collection of four iphone applications which are essential for those working in audio and sound. A real time Spectrum Analyser, a Scope to display waveforms, an SPL Meter, and a sine wave Signal Generator.

Ham radio blank log sheets to log your contacts

Calculate dimension for discone antennas online

CallBook is an Amateur Radio application that allows you to look up call signs via the free WM7D server, the QRZ Online subscription service or the HamCall subscription server and track active APRS stations on www.aprs.fi. Lookup results can be emailed and the QTH can be instantly viewed in the Maps application

Radio Center radiaficion, Gps, Garmin, Kenwood, Yaesu, Navilock, dealer in Spain

Current HF band conditions online report and graphs. This page provides band condition information to CW and SSB Contesters. It can also be of benefit to other Radio Amateurs to determine band condtions for Nets and casual QSO

Stone vintage radio describes early radio from marconi to the 1960s. its covers antique radio, wireless, tubes, valves, crystal sets, and battery radios. included in the virtual museum are hundreds of pictures, images, and descriptions of antique radios, articles, faq, sell, and buy a radio.

W5GVE article on homebrewing a 144 MHz DDRR antenna for mobile use

Why Multi-band Dipoles Need HEAVY Open Wire Line by Tom, K1JJ

Kenwood, AOR, CB antennas and accessories.

The image is a all in one map of ITU Zones displaying worldwide regions and zones. It provides information on ITU Regions at IARU website, aimed at radio amateurs and technical users. Image size is in hight resolution and jpeg format, free to download.

ComTekk Software Tone generator for 2-way radio signaling. Use sound card to generate CTCSS, DTMF, tone remote, ANI and more. Synthesizer for simulation and testing of 2-way radio systems, repeaters, remote control, ANI, Paging and more

A quick and easy method of programming memory channels The Icom IC-V8000 manual leaves much to be desired due to the translation. The operator's manual included with the Icom IC-V8000 can be very confusing to the new ham and the old timer alike, and lots of hams get very disgusted when trying to program the IC V8000 using the instructions provided with the operator's manual.

Details the offerings of Ham Buerger Inc., a company founded in 1965 to support the amateur radio community with communications products. The business provides a range of equipment, including Uniden Digital scanners, and maintains a section for equipment blow-out sales that feature professional 2-way radios and cell phones. Additionally, the company stocks hard-to-find NuTone products and provides repair services for most NuTone equipment. The site also references an Amateur Radio Band Plan and links to other ham radio resources, alongside a new product offering for RV and marine toilets, indicating a diversification beyond core amateur radio supplies.

Free Donwload of the PDF file of ITU and CQ zones of the world, made available by Icom America

how to easy and quickly unsolder and recover electronic components from old electronic board (SMD and not) by iz7ath Talino

Tombone VHF antenna for 146 MHz ad designed by YB8EIP

How to redirect the CAT to the MIC socket on the Yaesu FT-897/857

The Adonis Electric Co., Ltd. catalog details a range of amateur radio microphones, including mobile, desktop, and bike-specific models, alongside essential accessories. Featured products include the _FX-6_ flexible microphone and various interconnecting cables designed for seamless integration with transceivers from Icom, Yaesu, and Kenwood. The catalog also presents specialized items like microphone selectors, alternator noise filters, and peripherals such as voice memory units and double VOX controllers, enhancing operational flexibility for hams. These products are engineered to improve audio clarity and operational convenience for amateur radio operators, particularly in mobile and fixed station environments. The inclusion of conversion codes ensures compatibility across major transceiver brands, simplifying setup. The alternator noise filter addresses common mobile RFI issues, contributing to cleaner signal reception and transmission, which is crucial for effective DXing and contesting.

Amateur Radio License exams are composed of questions from a pool. Use this application to practice all possible questions prior to taking your exam

This article describes how to use a phone line as a shortwave receiving antenna, but be carefull telephone lines present a potential shock hazard, use at your own risk

Home made discone antenna used with RTLSDR dongle

Homebrew a 1/4 wave 80 meter vertical using aluminium tubing