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Re: Henry 2K-3 TR switching


 

Jim, OK I'll study that. Thank you. Attached is a picture of the relay on the top of the RF deck.
I hope 2+ meg isn't too big of a file.
Bob W4JFA


On Wed, Jul 31, 2024 at 8:07?PM Jim VE7RF via <jim.thom=[email protected]> wrote:
On the 2K-3 schematic,? RY3 is a 3PDT..... with input / output / and cutoff bias.?

If urs only is only a DPDT....there must be another relay in there for cut off bias.? And it only needs to be a SPST-NO relay.?

On the schematic, the NC contact is not used on the cut off bias.? It just shorts out the 10K @ 25 watt resistor on TX....leaving the CR7 bias diode in the circuit.?
The COM on any relay is the contact that actually physically moves.??

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