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[Amps] Actuating a 120 VDC relay with low voltage

To: amps@contesting.com
Subject: [Amps] Actuating a 120 VDC relay with low voltage
From: Steve London <n2icarrl@gmail.com>
Date: Mon, 26 Dec 2022 15:04:19 -0700
List-post: <mailto:amps@contesting.com>
I have an old PT-2500A with a 120 volt relay. Modern radios don't like such
a high voltage on their PTT circuit.

Can someone point me to a circuit that will allow control of the 120 volt
PTT relay with something in the 12-24 volt range ? Seems like it should be
pretty simple with a transistor that can handle 120 volts collector to
emitter, but I would rather have a tried-and-true circuit so I don't screw
something up.

Thanks and 73,
Steve, N2IC
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