Stan, most if not all radio manuals indicate what the amplifier keying specs
are of the radio. They vary among different radios depending on if they are
transistor keying or relay keying. As a rule most newer radios can handle 12v
at some moderate current but it is always best to consult the manual for exact
spec's.
-----Original Message-----
From: Stan Gammons <s_gammons@charter.net>
To: amps@contesting.com <amps@contesting.com>
Sent: Sat, Jul 20, 2019 9:32 am
Subject: [Amps] Modern rig amplifier keying
How much voltage will modern rigs tolerate on the keying circuit? I have
an older amp that has a 12 volt relay. Will that fry the keying circuit
of a modern rig?
73
Stan
KM4HQE
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