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Re: 2175 Hz Voting tone encoder Board

 

There was..... one chip that was made by, a name I cannot remember off the top of my head but I bought several, was originally designed to do telephone SF at 2600 Hertz. That used a 3.58 MHz Crystal. Changing it to a 3.00 MHz Crystal produced a 2180 HZ tone. I might still have some of the chips lying around. Bought them to use in a link project where we were going to use out of band signaling at 3748 Hertz with a 5.12 megahertz Crystal. That way we didn't have to depend on noise squelch or PL tones which would be too slow in my opinion.

Chris WB5ITT


On Sat, May 3, 2025, 10:48?PM Carl Beaudry via <va2cmb=[email protected]> wrote:
Hi to All,

I am replacing a Failling MSR2000 VHF 100 Watts by a Tait T800 series 2 VHF 100 Watts.

The receiver of the MSR is driving a Sectra-Tac board in a voting system.

The new Tait Repeater as a RX Line out like the MSR but no 2175 Hz encoder.

Before I take out the encoder board in the MSR and fit it in the T800...

I was wondering if there is a aftermarket source for 2175 hz voting encoder board ?

Or if any member did this modofication before?


Best 73
Carl
VA2CMB
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