Tag Archives: ptt

Amplifier PTT Buffer Schematic

Posted on June 10, 2015 by Steve Netting OH3SPN

I’ve been keying my KW1000 linear using a relay to buffer the FT847.  The FT847 closed a 12V circuit across the relay and the relay in turn keyed whatever voltage/current the linear requires.  The relay in the KW1000 is old, large … Continue reading →

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Upgrade: Yaesu MH-31 to Studio Mic

Posted on May 1, 2015 by Steve Netting OH3SPN

Some time ago I started receiving reports that the audio on my FT847 was very narrow. After much investigation and eventually swapping mics with my FT817 I realised it was the mic that was faulty. Oddly, swapping the mic element … Continue reading →

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