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Multiple units 1 PTT line
- Thread starter 2greedy
- Start date
As a rule you can isolate the two keying inputs by adding a diode in line with each line. Anode (not banded end) to the center pin of the accessory's keying jack and cathode (banded end) to the radio's keying jack.
And if you are keying two identical units, the diodes are probably not even necessary. Just tie the two inputs together.
The diodes serve to isolate two potentially different relay voltages from each other. Serves to keep one from feeding into the other. If both are the same, no need to do that.
73
And if you are keying two identical units, the diodes are probably not even necessary. Just tie the two inputs together.
The diodes serve to isolate two potentially different relay voltages from each other. Serves to keep one from feeding into the other. If both are the same, no need to do that.
73
