Remote CW with Old Analog Rig

Figure 1: Rough diagram of remote (TX end) for old analog CW rig.

Posted 02/11/2017

I have a couple old analog rigs here in the shack, and I thought it’d be nice to remote them to the easy chair in the living room, or the dining room table, or the back porch deck. Just to complicate things, I decided that I couldn’t revert back to Windows to do this task, and additionally I wanted it to be at least *feasible* to use the remote radio capability from an internet connected place (like a hotel in another state).

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The Alda 103 on CW

Figure 1: CW oscillator level control on the Alda 103 (see text).

I had been operating the Alda 103 CW/SSB triband ham radio, a gem from the seventies, for a couple weeks on the SSB end of forty meters. I received nothing but good reports, such as “very clear and clean” – and “an easy to listen to signal” since I resolved an issue with the microphone input impedance, which on the Alda is slighty different than *any* other amateur transceiver. This was done by putting a Triad audio impedance transformer between the Alda and the Shure 414A Hi-Z microphone…

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