155 links - and 7 categories

Antennas : 40M : 40 meter Dipole Antennas
  • Make a Compatct Dipole for 7 MHz - This article demonstrate how to build and mount a 40 meter loaded dipole using basic materials. This antenna reduce the overall length of an HF dipole through the use of loading coils.
    [ Hits: 209 | Votes: 0 | Rating: 0 ]
Antennas : Delta loop
  • 160m Inverted Delta Loop - This 160 meter Delta Loop antenna is made of Hard drawn copper wire AWG 10, the two upper side are 148.5 foot each base wire is 240.9 foot, the feed point at 30.69 foot to one corner, feed with 450 Homs balanced line to an antenna tuner on the ground, then with 50 homs coax to the shack.
    [ Hits: 84 | Votes: 0 | Rating: 0 ]
Ham Radio : Clubs : Europe : UK : Southern England
  • Mid Sussex Amateur Radio Society - Mid Sussex ARS is an RSGB-affiliated club and meets at its headquarters in Burgess Hill on the 2nd and 4th Friday of each month. They organize various activities ranging from talks by members or guest speakers, evenings on the air using their shack's latest SDR equipment, training evenings and used equipment sales. As well as scheduled club nights, they run many outdoor activities throughout the year, including direction-finding contests, town days, social evenings and Special Event Stations. They even have their own free online training academy!
    [ Hits: 11 | Votes: 0 | Rating: 0 ]
Operating Modes : Packet Radio
  • APRS and Packet Radio made easy - The Raspberry PI 3+4 has proven itself as an amateur radio computer. Both at home as the main computer in the shack but also on the road. It is small, inexpensive and incredibly versatile. The operating system and the most important programs are available for free.
    [ Hits: 140 | Votes: 0 | Rating: 0 ]
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: 237 | Votes: 3 | Rating: 9 ]
Radio Equipment : HF Transceivers : Yaesu FT-817
  • FT-817 internal battery power Fix - If your FT-817 has stopped powering up from the internal battery but works from external power, then maybe the internal battery fuse has blown. There is a small PCB mounted fuse to protect the battery and radio. This fuse can blow, if it does your radio will not work from battery power. This page will describe how to test the fuse and describe how to make a repair.
    [ Hits: 49 | Votes: 0 | Rating: 0 ]
  • Yaesu FT-817 battery pack - Go portable with an external battery pack. The built-in batteries will not last thirty minutes when transmitting, that's not really practical. An external battery pack overcomes these problems.
    [ Hits: 72 | Votes: 0 | Rating: 0 ]
  • Digital Modes with Yaesu FT-817 - Setting up the Yaesu FT-817 and Signalink for data mode communication. Hardware and software required for data mode communication, connect and configure FT-817 and Signalink
    [ Hits: 42 | Votes: 0 | Rating: 0 ]
Shopping and Services : Accessories
  • Ham Goodies - Amateur Radio goodies for not only the Shack, but also a range of outdoor/portable kit. Ferrite toroids, RTL SDR, Un-uns and Baluns for antennas and RF Filters. Based in the UK.
    [ Hits: 143 | Votes: 0 | Rating: 0 ]
Software : DX Cluster
  • DXSPOTS - DXSPOTS is a Telnet connection program. It allows radio amateurs with a lot of DX traffic to know instantly the status of the bands and to know which DX are currently on the air. Following the Packet-Clusters where data was transmitted on VHF/UHF via dedicated relays and sometimes on HF at a very low speed (300Bds on HF), the Internet has taken over and is now transmitting DX information via the computers in most shacks. Translated with (free version)
    [ Hits: 138 | Votes: 0 | Rating: 0 ]
Software : Satellite tracking
  • Remote Orbitron Interface - Remote Orbitron enables either direct connection between a computer and the shack unit using a serial port OR remote operation from the internet using a WIZ110SR serial to ethernet board.
    [ Hits: 128 | Votes: 1 | Rating: 9 ]
Technical Reference : Dummy Loads
  • DIY 1KW Dummy Load - F5NPV explores the construction of a cost-effective 1KW dummy load for radio enthusiasts. Purchasing a commercial dummy load can be expensive, but with basic materials such as a metal can, resistors, mineral oil, and a heat dissipator, you can build your own. The article provides a simple guide to assembling the load, including the importance of testing for inductance. The DIY dummy load yields impressive performance, with an SWR of 1.2:1 across multiple bands and the ability to handle up to 1KW of power. This budget-friendly solution is a valuable addition to any radio shack.
    [ Hits: 67 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Frequency Interference
  • The battle with massive RFI problems in the shack - This fall/winter 2 events has happened at about the same exact time. I finally got around to putting up an end fed long wire for 80M (and maybe 160M) The fridge big the bullet and we ended up purchasing a new fridge.
    [ Hits: 94 | Votes: 0 | Rating: 0 ]
  • Solar Panel and Ham Radio - If you are having problems with RFI from Solar Panels this document from QST provides useful advice. According to this article it is possible to prevent and mitigate RF interferences, with your amateur radio equipment, by suppressing the RF either in the shack and to the solar power infrastructure.
    [ Hits: 87 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Frequency Interference : Noise Reduction
  • Mains RF Filter - If RF noise threatens to take your hobby away, this could be probably a good solution to reduce or even eliminate RF Noise.
    [ Hits: 122 | Votes: 0 | Rating: 0 ]

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