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291 links - and 6 categories

Antennas : Feed Lines : Choke
  • High Performance common-mode chokes - May 2015 Radcom Article on common-mode chokes that can be used for control cables, phone lines, but mostly on typical HF antenna systems. This article explain what common mode chokes does, why you meay need one, properties common mode chokes should have, how to build and measure performances.
    [ Hits: 681 | Votes: 1 | Rating: 10 ]
Manufacturers : Accessories
  • Hands Free - Radcom Labs - The SAFE SPEAK HF3 is the third generation of a unique Hands-Free microphone system for two-way radio communications. The HF3 can be used with almost any radio transceiver and is ideal for permanent installation in a vehicle or temporary use during emergencies or special events.
    [ Hits: 173 | Votes: 1 | Rating: 10 ]
Operating Aids : Beginner's Guides
  • Setting Up Your HF Station - From buying an amateur radio transceiver, choosing the correct power supply, selecting the antenna and its feed line, to choosing the best microphone and accessories. A nice presentation for beginners.
    [ Hits: 187 | Votes: 2 | Rating: 8.5 ]
Operating Modes : Digital Voice
  • SM1000 FreeDV Adaptor - The SM1000 allows you to run FreeDV without a PC. Connect the SM1000 to your SSB radio, and you now have Digital Voice (DV). You don’t have to buy a new radio to run Digital Voice! It’s based on a STM32F4 micro-controller, has a built in microphone, speaker amplifier, speaker, and transformer isolated interfaces to your radio.
    [ Hits: 124 | Votes: 0 | Rating: 0 ]
Operating Modes : QRP
  • How to call CQ as an HF QRP station - Tutorial, How to call CQ as an HF QRP station in SSB/Phone. Calling CQ Basics, Calling CQ QRP or Portable
    [ Hits: 129 | Votes: 3 | Rating: 4 ]
Radio Equipment : HF Transceivers : Icom IC-7300
  • IC-7300 Bluetooth Support - It is possible to add a very small Bluetooth transmitter to the 3.5mm headphone jack and then use a pair of Bluetooth headphones around the shack. In this article Author provides some tips on choosing the proper Bluetooth interface.
    [ Hits: 278 | Votes: 4 | Rating: 7 ]
Radio Equipment : HF Transceivers : Kenwood TS-590S
  • TS-590S audio noise - With high impedance earphones plugged into the audio jack on the Kenwood TS-590S or TS-590SG, you can hear a really annoying noise even with the AF volume set to zero. A simple quick-and-dirty solution is a resistor in series to the audio output.
    [ Hits: 130 | Votes: 1 | Rating: 9 ]
Radio Equipment : Receivers
  • Everything you needed to know about Radio Receivers and Scanners - Tuning into the airwaves for new and interesting transmissions has fascinated enthusiasts since the very earliest days of radio. As a result of advances in computer and radio technology, the equipment packed radio rooms of the past are now replaced by scanning receivers sometimes just the size of a mobile phone. What can radio receivers/scanners pick up? What types of radio receivers/scanners are there? What can and cannot be monitored legally? Best practice when using a radio receiver/scanner
    [ Hits: 178 | Votes: 0 | Rating: 0 ]
Radio Equipment : Voice Keyers
  • BX-184 – An MH-31 microphone integrated voice keyer - A voice keyer kit available on the marker in two models, BX-184 is the replacement PCB for those who already own an MH-31 microphone. Kit BX-184M includes an MH-31 besides the PCB for those not owning one yet.
    [ Hits: 215 | Votes: 0 | Rating: 0 ]
Shopping and Services : Remote Radio
  • RemoteTX - The RemoteTx ham radio remote control system is an economical way to control your amateur radio station through the Internet with a phone, tablet, Mac or PC. There are 3 main parts to the solution. Conveniently operate your station with a smartphone, tablet or laptop anywhere you have Internet access.
    [ Hits: 244 | Votes: 1 | Rating: 1 ]
Software : Android
  • FieldLog Android Logger - FieldLog is an Android phone application for recording QSO during holidays, nature trips, FloraFauna, IOTA, SOTA, Castle, Lighthouse.
    [ Hits: 190 | Votes: 0 | Rating: 0 ]
Software : Databases
  • Repeater-START App - The amateur radio listener for when you're not on the radio. Repeater-START, the offline repeater listing app for Windows, Linux, Raspberry Pi, Ubuntu, Librem Phone is available, Now with grid square display, topographical maps and frequency preferences
    [ Hits: 150 | Votes: 0 | Rating: 0 ]
Software : Morse Code Decoders
  • MorseExpert for Android - Morse Code Decoder for Android based on the algorithms implemented in CW Skimmer. Morse Expert decodes Morse Code audio to text. It is optimized for decoding weak, fading signals in the presence of interference, especially on the Amateur Radio bands. The input audio might come either from the built-in microphone or from another device, such as a radio receiver.
    [ Hits: 322 | Votes: 5 | Rating: 9 ]
Technical Reference : Amplifiers
  • 100 Watt RF Power Amplifier for 2 GHz - Modification to an old cellular phone base station modules, with a fairly reduced output power (10 watts or so), the stock power amplifier modules will cover the 2.3 GHz and 2.4 GHz amateur radio bands.
    [ Hits: 160 | Votes: 0 | Rating: 0 ]
Technical Reference : Audio
  • An Audio Selection Panel in the Shack - On this page, you will find one of my designs; An Audio Selection Panel (ASP). The Audio Selection Panel allows you to control 4 Transceivers and hear the audio through the built-in loudspeaker and on an external boomset (combination Microphone/ headset). On or more transceivers can be selected at a time to transmit and/ or receiv
    [ Hits: 138 | Votes: 2 | Rating: 7.5 ]
Technical Reference : Headsets and Speakers
  • Computer headset adapted for Ham Radio Usage - Adapting a common PC earphone with microphone to connect to a transceiver via a homemade pre-amplifier, using a simple chip with aprox 10 db gain. Includes a schematic diagram
    [ Hits: 178 | Votes: 0 | Rating: 0 ]
Technical Reference : Keyers
  • BX-184 Voice Keyer - The BX-184 is a voice keyer developed by Olli DH8BQA designed to fit into the case of a Yaesu MH-31 microphone.
    [ Hits: 237 | Votes: 0 | Rating: 0 ]
  • ESP32 CW Keyer - ESP32 portable CW Keyer with touch buttons and bluetooth interface, allows control from mobile phone and other devices, Up to 25 pre-saved messages, Variable speed from 5 to 70 wpm.
    [ Hits: 173 | Votes: 1 | Rating: 1 ]
Technical Reference : Mic wiring
  • Astatic Mic Wiring Handbook - Complete microphone wiring handbook for most popular radio transceivers provided by Astatic Microphones.
    [ Hits: 183 | Votes: 1 | Rating: 10 ]
Technical Reference : Microphones
  • Alinco DR-605 Microphone Cable Repair - Repairing the RJ45 plug end of the mic cable of a Alinco DR-605 dual band mobile transceiver. Alinco microphones are well known for the cable jacket getting brittle and breaking
    [ Hits: 125 | Votes: 0 | Rating: 0 ]

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