Here's a thought on a minimalist si5351 vfo:
Could turn on a second channel at 600 hz away from the primary channel,
weakly coupled into that primary channel.
This should come through on most receivers as a 600 hz audio tone.
So can tell the user the frequency in morse when requested?
by a button push,?in addition to giving a tick every 25khz.?
The entire vfo could be the size of a penny,
and cost about 200 of them in parts.
Jerry
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On Tue, Dec 10, 2019 at 02:19 PM, Jerry Gaffke wrote:
Maybe have the si5351 stop for 100ms each time it passes through a multiple of 25khz
so you can audibly keep track of where the vfo is.
