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34 links - and 2 categories

UniBalun: Lightweight Balun/UnUn PCB for QRP Radios (1:1, 1:4, 1:49) - The UniBalun is a PCB for building a lightweight antenna transformer (Balun) or impedance converter (UnUn) for low power radios. By soldering jumpers and a toroid core, you can create a 1:1, 1:4 Balun or 1:49, 1:9 UnUn. The latest revision (1.2) includes improved pads and supports both BNC and SMA connectors. Build instructions are available for German speakers.
[ Hits: 63 | Votes: 1 | Rating: 1 ]

A loop antenna for 7 MHz to 30 MHz - This note describes a relatively small, but efficient, loop antenna initially created for portable operation. With suitable modifications, it can be adapted for fixed station use. In this age of CC&Rs, an antenna similar to this may very well be the answer to your problems. Have a look, be inspired, get out the torch / soldering iron and create your own version!
[ Hits: 2453 | Votes: 8 | Rating: 7.25 ]
Magnetic Loop Controller for 4 Antennas - This project is for those ham amateurs who do not have a commercial one . It's easy to build with a soldering iron, a plastic case and a little knowledge of arduino. The controller is made with budget components you can find easily in Internet. The main component is a cnc shield that fits over an Arduino Uno. Both made a compact, small and cheap controller.
[ Hits: 134 | Votes: 2 | Rating: 10 ]

A cheap VHF UHF Yagi - Elements are aluminum TIG soldering rods 4.0mm of diameter, almost 1m long, these objects are light, thin and flexible based on the RZ9CJ Design
[ Hits: 273 | Votes: 3 | Rating: 9.67 ]

Yaesu FT 857 Filters Repair - Replacing two ceramin filters of a Yaesu FT-857 by desoldering and soldering new ones.
[ Hits: 98 | Votes: 0 | Rating: 0 ]

Coax and PL259s - Basics, Coax, The PLS259, Soldering and preparing the coax, Crimp on Connectors
[ Hits: 517 | Votes: 4 | Rating: 7.25 ]
How to perfectly clean wires in minutes - Here is an old ham radio operators trick for cleaning wires for soldering that are old and corroded. It is hard to find this technique printed anywhere!
[ Hits: 1343 | Votes: 5 | Rating: 7.8 ]
UHF Connector - An overview about the UHF connectors often referred to as the PL259 plug and SO239 socket used for many RF applications. Limitations, history and soldering properly UHF Connectors
[ Hits: 352 | Votes: 0 | Rating: 0 ]

PETH-49 2A Power Supply - A linear regulated power supply 2A, 20 V designed mainly to get used to soldering and have something usefull as final result.
[ Hits: 414 | Votes: 2 | Rating: 7.5 ]

Soldering Tips - Soldering Tips and tricks by George Szymanski, DU1GM
[ Hits: 353 | Votes: 0 | Rating: 0 ]
Succesful soldering - Tips and tricks for succesful soldering. An illustrated guide for beguinners and an usefull reminder for expert in soldering.
[ Hits: 368 | Votes: 0 | Rating: 0 ]
Soldering PL-259 - Soldering PL-259 Coax Connectors
[ Hits: 658 | Votes: 2 | Rating: 9 ]
How to Solder: Through-Hole Soldering - The basics of through-hole soldering, the tools needed, go over techniques for proper soldering.
[ Hits: 191 | Votes: 0 | Rating: 0 ]
How To Achieve Perfect PCB Soldering - Surprisingly, although PCB soldering is the core process of electronics assembly, few people do know how to solder reliably
[ Hits: 154 | Votes: 1 | Rating: 1 ]