[TenTec] Orion/Centurion/Ant1 QSK Question

[Harry]

John;

I only have an Omni 6+ so this doesn't affect me, but I though I saw
somewhere that the older Centurion's need a mod to work correctly with the
newer rigs. (Pegasus, Jupiter, Orion). Searching the Ten Tec site under the
Centurion info, I found :

Note for older 422 Centurion amp owners:  Using an older Centurion with the
newest Ten-Tec HF transceivers - Pegasus, Jupiter, and Orion - may require a
small modification to the QSK board in older Centurion amps for proper QSK
CW keying.   Short diode D2 (red diode, 1N4148, next to Q1) with a jumper
wire.  The current 422B does not require this modification.

I wonder if that is your problem?

73
Harry, NK9R

----- Original Message ----- 
From: "john, ke5c" <ke5c at hot.rr.com>
To: "Ten-Tec Reflector" <tentec at contesting.com>
Cc: <service at tentec.com>
Sent: Saturday, November 22, 2003 10:48
Subject: [TenTec] Orion/Centurion/Ant1 QSK Question


> The Orion has arrived, but has anyone run across this before?
>
> 1) Omni 6+ keys Centurion in QSK mode fine
> 2) Orion/Ant1/KeyingLoop1=ON puts Centurion into transmit mode but Orion
> does not go into transmit as if loopback to Orion not working properly,
yet
> 3) With a direct loopback - TX OUT 1 jumpered to TX EN 1 - the Orion does
go
> into transmit, and
> 4) Orion/Ant2/Keying Loop2=ON works fine.
>
> Without a circuit diagram, I am guessing the output device that drives TX
> OUT1 is weak (low beta) so that it can sink enough current to key the
> Centurion but not enough to then also key the Orion.  Or perhaps however
the
> Orion senses a closure or low level for TX EN1 is a bit off.  Thanks for
any
> thoughts.
>
> 73, John
>
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