hf radio

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hf radio

637 links - and 12 categories

Antennas : Antenna Calculators Antennas : Baluns
  • Choking balun for 160-30 meter band - Choking balun for lower HF and MF bands. (1.8MHz - 10MHz). Requiring a choking balun to isolate the potential RF pick up on the coax cable as it runs past equipment such as computer within the radio room at lower HF and MF frequencies a simple method of winding RG58 coax onto a Powdered Iron Toroid Core was constructed.
    [ Hits: 196 | Votes: 3 | Rating: 6 ]
Antennas : Dipole
  • Short Monoband Dipole Antennas - KGD Antennas - The KGD antenna is an option for those with space restrictions. The idea behing this project is to provide a short dipole antenna for HF Bands and to allow operations on HF bands when its not possible to setup large antennas, using these short base loaded dipoles.
    [ Hits: 240 | Votes: 0 | Rating: 0 ]
Antennas : J-Pole
  • Exploring The J-Pole Antenna - The J-Pole antenna is a common omnidirectional antenna used in amateur radio, particularly on the VHF and UHF bands. This article is an attempt to explore how the J-pole antenna transforms feed-line impedance to free-space impedance, all the while providing gain found only in the more expensive commercial products.
    [ Hits: 142 | Votes: 0 | Rating: 0 ]
Antennas : Portable
  • An automatically tuned 7 to 30 MHz mobile antenna - For every radio amateur who loves to travel by car, a mobile installation soon becomes a necessity. While in inhabited areas there is usually some coverage of VHF repeaters, in many other places VHF radios are useless. In these very places, HF can provide reliable contacts, and a lot of fun, from anywhere.
    [ Hits: 258 | Votes: 1 | Rating: 10 ]
Ham Radio : Clubs : North America : USA : Utah
  • Bridgerland Amateur Radio Club - We are a group of amateur radio operators located in Northern Utah who enjoy exploring many aspects of the hobby from HF to VHF and beyond. We are active in many public service events, Field Day, APRS, packet, Winlink, contesting and more
    [ Hits: 82 | Votes: 3 | Rating: 10 ]
Internet and Radio : WebSDR
  • WebSDR Roma2 Online Radio - Online websdr receiver based in Rome Italy provides a nice user web interface and receiver most of the amateur radio HF bands
    [ Hits: 385 | Votes: 2 | Rating: 4.5 ]
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 ]
Manufacturers : Amplifiers
  • The DX Shop - The DX Shop Limited are suppliers of high end equipment and manufacturers of the Linear Amp Gemini range of HF to UHF solid state linear amplifiers for the serious Radio Amateur.
    [ Hits: 148 | Votes: 0 | Rating: 0 ]
Manufacturers : Software Defined Radio
  • Silphase Technologies - Amateur radio SDR Receiver and Transceiver manufacturer , makers of the Silphase R1 an innovative HF receiver with high performance real-time spectrum scope.
    [ Hits: 131 | Votes: 0 | Rating: 0 ]
Operating Aids : Beginner's Guides
  • Guide to HF Contesting - HF contesting is a rising aspect of amateur radio that can be enjoyed (at any level) throughout the year. There are HF and LF contests almost every weekend and on some weekday evenings. Learn how to take part in HF contests.
    [ Hits: 135 | Votes: 0 | Rating: 0 ]
Operating Aids : Grid Squares
  • History of The Amateur radio LOCATOR System  updated - This article taken from the IARU Region 1 VHF handbook, is about the history of the original Locator System named QRA-Locator consisted of just five-character code, two capital letters, a two-digit number and a lower-case letter, like inf example CM72j
    [ Hits: 191 | Votes: 1 | Rating: 1 ]
Operating Modes : Repeaters
  • Ham Radio: Using Repeaters - The most basic form of repeater receives communication on one frequency and re-transmits at a different frequency. This is known as duplex communication. Repeaters are generally set up to operate with FM modulation on the amateur bands within the VHF (30 MHZ – 300 MHZ) and UHF frequencies (300 MHZ – 3 GHz). These are generally the frequencies used by handheld and mobile devices.
    [ Hits: 92 | Votes: 1 | Rating: 8 ]
Radio Equipment : HF Transceivers : Icom IC-705
  • ICOM IC-705 and Raspberry Pi - A portable setup of the ICOM IC-705 with portable VHF UHF and and HF Alex Loop antenna, managed with a portable Raspberry PI 3 setup.
    [ Hits: 254 | Votes: 2 | Rating: 10 ]
Radio Equipment : HF Transceivers : Icom IC-7300
  • IC-7300 Quick Start Guide - PDF document for IC-7300 beginners. The ICOM IC-7300 is an HF + 6 meter, multi-mode, self-contained Software Defined Radio (SDR) transceiver with knobs, buttons and a touch screen. It also has a real-time spectrum display with pan adapter and water fall displays.
    [ Hits: 683 | Votes: 2 | Rating: 8 ]
Radio Equipment : HF Transceivers : XIEGU G90
  • XIEGU G90 Review - Review of the Xiegu G90 20W HF portable transceiver capable to run CW SSB AMD modes, based on an Software Defined Radio
    [ Hits: 354 | Votes: 0 | Rating: 0 ]
Software : Log Analysis
  • ARTIC Contest Log Checker - Artic is a program dedicated to amateur radio contest log checkers, mainly in Italian offers log checking function for VHF contests like IAC in Italy and SWAC in Switzerland
    [ Hits: 122 | Votes: 1 | Rating: 10 ]
Software : Software Defined Radio
  • Zeus Radio - Software Defined Radio - Zeus Radio program is designed specifically for the ZS-1 transceiver and supports all the basic functions (RIT, XIT, SPLIT, Noise Reduction, Auto Notch Filter, etc.) in order to work in the broadcast brought only pleasure. Zeus Radio works also with Hermes, Anan, Afedri, Red Pitaya, HiQSDR, Odyssey, Extio, RTL-SDR, Peaberry, Winradio, SDR-IQ, Afedri
    [ Hits: 505 | Votes: 1 | Rating: 8 ]
Technical Reference : Homebrew
  • Experimental HF 6-band SSB transceiver - An SSB radio for the HF bands will be presented. Featuring 12 to 20 Watts of output power (depending on DC supply), full DDS frequency generation, covering 6 major frequency bands (1.8, 3.5, 7, 14, 21 and 28 MHz) within the short wave amateur radio spectrum. The rig also features colored LCD and front panel backlight.
    [ Hits: 709 | Votes: 14 | Rating: 9.86 ]
Technical Reference : Software Defined Radio : RTLSDR
  • RTL SDR with Active Antennas for HF - Experiences with software defined radios SDR and active antennas using the RTL SDR dongle and Spyverter HF up-converter
    [ Hits: 181 | Votes: 2 | Rating: 10 ]

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