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133 links - and 7 categories

Antennas : 40M : 40 meter Dipole Antennas
  • 40-80 Coax Trap Dipole - Full article on how to build a home-made wire dipole antenna for 40 and 80 meters band. Article is fully in italian, as it was published on ARI RadioRivista, but is plenty of self explaining pictures that will guide you on homebrewing this trapped dipole antenna for the lower amateur radio bands.
    [ Hits: 261 | Votes: 3 | Rating: 9.33 ]
Antennas : End-Fed
  • Multi-band End-Fed Antenna - An excellent guide to homebrewing multi band end-fed antennas. The article, embed several drawings including diagrams and detailed pictures, illustrating the basic funcionality of end-fed antennas. The author gives some basic hints on how to build a half size antenna for 80 40 to 10 meters and a 6 meter to 40 meter configuration. It is also well described how to build the impedance transformer and the loading coils for lower bands.
    [ Hits: 1100 | Votes: 6 | Rating: 4.5 ]
Antennas : Horn
  • What is Horn Antenna - Horn Antenna - The energy of the beam when slowly transform into radiation, the losses are reduced and the focussing of the beam improves. A Horn antenna may be considered as a flared out wave guide, by which the directivity is improved and the diffraction is reduced. One of the first horn antennas was constructed in 1897 by Bengali-Indian radio researcher Jagadish Chandra Bose in his pioneering experiments with microwaves. The modern horn antenna was invented independently in 1938 by Wilmer Barrow and G. C. Southworth. This Horn model antenna is suitable employed in the UHF or SHF radio bands. Making this horn model antenna it will be easy for a beginner to make if it works in the 10GHz frequency, because small dimensions so it is not so difficult and also offers gain up to 25dBi.
    [ Hits: 74 | Votes: 0 | Rating: 0 ]
Antennas : Towers
  • Antenna Mast Guying for Amateur Radio Antennas - Article based on ROHN engineering specification that will guide on proper guying heights and guy lengths when guying ham radio antenna masts. It will help you determine ahead of time the proper length of guy wires and the distance from the base of the mast to the anchor points
    [ Hits: 314 | Votes: 3 | Rating: 7.67 ]
Ham Radio : Radio Scouting 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 ]
  • Welcome to Amateur Radio for Newcomers - A complete guide for newcomers edited by the Radio Amateur Society of Australia Inc. This free PDF includes several basic articles for new hams, with particular reference to Australian regulations, but is however a good guide for those who are aproaching the hobby worldwide.
    [ Hits: 422 | Votes: 0 | Rating: 0 ]
  • Beginners Guide to Repeaters - An article about how to operate repeaters. How to call someone on a repeater, how to program your HT Radio setting the correct offset, setting tones, and several information on etiquette, lingo, abreviations and codes
    [ Hits: 108 | Votes: 0 | Rating: 0 ]
Operating Modes : DMR
  • Sample code plugs for DMR Radios - Starter Code Plugs and Information for the New DMR User These code plugs were are set up specifically for three UHF repeaters in the York / Harrisburg, PA area. These are working examples only and to be used as guides.
    [ Hits: 193 | Votes: 3 | Rating: 6.67 ]
Operating Modes : Internet Linking : AllStarLink
  • AllStarLink Wiki - Guide to AllStarLink the world wide network of Amateur Radio repeaters, remote base stations and hot spots accessible to each other via the Internet and/or private IP networks.
    [ Hits: 138 | Votes: 0 | Rating: 0 ]
Operating Modes : Satellites
  • Using a Baofeng handheld to work Satellites - How to program Baofeng handheld transceiver with satellite frequencies, and how to get alerts when satellites are visible by using a smartphone app. A beginners guide to work satellites with a common VHF handheld radio.
    [ Hits: 544 | Votes: 5 | Rating: 8.2 ]
Operating Modes : Satellites : Weather Satellite 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 ]
Software : Linux
  • Linux and Amateur Radio - Presentation - A PDF presentation about Amateur Radio and Linux by By: Dave Mamanakis. A beginners guide to Linux for radio amateurs, this presentation cover basic concepts of the open source operative system, from the basic installation to the setup of ham radio programs.
    [ Hits: 1196 | Votes: 0 | Rating: 0 ]
Technical Reference : Grounding
  • Practical Amateur Radio Grounding - The single point ground in the most important aspect of a good grounding system. The concept behind a single point ground is very simple, keep everything at the same ground potential. Electrical Groundl, Lightning Ground, RF Grounds
    [ Hits: 292 | Votes: 0 | Rating: 0 ]
Technical Reference : Raspberry Pi
  • Guide to decode SSTV with RaspberryPi and RTL-SDR - A tutorial on how to setup a receiver capable to decode SSTV signals with a small RaspberryPi version 2 and a RTL-SDR dongle. The author explains how to install the needed software to interface the RTL-SDR and a step by step guide to install the QSSTV software used to decode the signals.
    [ Hits: 329 | Votes: 1 | Rating: 1 ]
  • Setting up Raspberry Pi for Ham Radio - An interesting guide to installing software on a Raspberry for amateur radio use. This documentation cover the Raspberry Pi 4 version that whose hadware is powerfull enought to fullfill all requiriements for ham radio programs.
    [ Hits: 396 | Votes: 3 | Rating: 9.33 ]
  • Setup Packetradio on a Raspberry - A quik guide to install direwolf, bpq and jnos on a Raspberry Pi. if you follow the instructions in the examples you should get it to work. You only need to adjust the configuration files direwolf.conf, bpq32.cfg, autoexec.nos
    [ Hits: 116 | Votes: 1 | Rating: 10 ]
  • Setup Raspberry Pi for Ham-Radio - A complete guide to install and configure a raspsberry pi for amateur radio usage. In includes from preparing a SD card, installing the operative system, configuring the Pi, and installing all ham applications you will ever need.
    [ Hits: 289 | Votes: 1 | Rating: 5 ]
Technical Reference : SWR Meters
  • SWR and Amateur Radio Antenna Tuners - Undestanding and measuring SWR, Standing Wave Ratio in antenna feed lines. This article also introduce basic concepts and usage guidelines of amateur radio antenna tuners
    [ Hits: 218 | Votes: 2 | Rating: 9.5 ]

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