The PDF file OrionBandData which has AD5X design for a encoder which takes the band data output of an Orion and converts to proper levels the BCD data needed to band switching of Yaesu as well as ICOM amplifiers. Thanks to AD5X for the design. Download here.
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The TinyKeyer
the (possibly) World’s Smallest Fully-Featured CW Keyer with Computer Support
Introduction
This keyer, based on Arduino design, employs the famous K3NG code. It can be used with any Windows/Linux/Mac logging or contesting software with Winkeyer USB (K1EL) support. The credit & big kudos goes to Anthony Good (Goody), K3NG, who did the tremendous work. It is a very small unit (outer dimensions 45 x 45 x 18.6 mm, appx. 1.8 x 1.8 x 0.73 in) which does not have any fancy options (a zillion of buttons, psychedelic flashing LED lights or cockatoo colored displays). It is intended for regular CW work and contesting with computer support, most of functions should be adjusted and operated via the computer. For standalone work an acoustic menu in command mode is used. Otherwise, only speed control knob and a mini LED indicating the command mode is on the front panel, nothing more.
Reject unwanted MW AM signals from your RX Front End A nearby broadcast AM station in the Medium Wave band can sometimes […]
While working on antennas some people have a bad experience with the antena analyzer dropping from the tower etc. An useful solution would be to attach some kind of lanyard (cord, line) and then have the loop end over your head. That way, if this unit were to slip out of a pocket it would just hang at the end of the lanyard. I was also afraid of dropping the unit, or putting strain on the antenna connector of my SARK-110. Here is the solution.
Small, cheap and widely available chinese transformers are frequently used in digimode interfaces, however the documentation is very poor. Both primary and […]