Hi, i'm searching a simply amp keying circuit, just to control a Kenwood
TL922 with an ICOM IC 756 Pro III.
What do you suggest to me?

Use an extern relais , otherwise you burn the very little tx relais (my
friend dit it with the tl922 )
because the key voltage is 120v
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Would a high voltage switching transistor with/without an opto-coupler
circuit not be more reliable ?
The opto-coupler circuit can be tailored for the transceiver's output
and a cheap High Voltage transistor could excite the amplifier.
Just a thought.

Frank GM0CSZ / KN6WH