Nope. The key inputs of both amps are buffered. Partial schematic of
Titan is here.
http://k9yc.com/TitanKeyingLogic.pdf
K4XU once told me that it was his initials on the published schematics,
and I think he later worked for Alpha. For operation with most rigs,
the PTT position of the PTT/KEY switch is used for all modes. The QSK
position is for a keying method used by early Ten Tec rigs where the
operator keys the amp and the amp keys the rig.
73, Jim
On 3/17/2019 5:56 PM, j...@kk9a.com wrote:
So the different voltage sources from each amp do not bother each other when
connected together with a Y or was only one amp turned on at a time?
John KK9A
Jim Brown K9YC wrote:
<snip>
Most of the rigs I've owned use a short on the key line to key the amp.
If both of yours do that, you can probably connect them in parallel to
the Key input of the power amp using an RCA Y-cable. I've done that for
years to switch my K3 between my KPA500 and a 1500w tube amp (for many
years a Ten Tec Titan, now an 87A).
73, Jim K9YC
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