[TenTec] 422 Centurion Keying Loop

[Jim Carragher]

I had the same problem. Put the jumper across D-2 per his instructions I
received. Works great.

On Mon, Mar 13, 2017 at 7:53 AM, Carl Moreschi <n4py3 at earthlink.net> wrote:

> Can't you just enable the keying loop with the menu setting for it?
>
> Carl Moreschi N4PY
> 58 Hogwood Rd
> Louisburg, NC 27549
> www.n4py.com
>
>
> On 3/13/2017 9:36 AM, Speer, Douglas wrote:
>
>>
>> I have lost an e-mail I got from Paul Clinton from a couple years ago.
>> Using the keying loop of the 422 Centurion with an Omni VII I am unable to
>> key the amplifier.  PTT connections work fine and the keying loop worked
>> fine with an Orion II.  Paul told me to short one of the diodes on the QSK
>> board to enable the keying loop to work correctly with the Omni VII.  I
>> cannot remember which diode.  I'm thinking it might be D4.  At the time I
>> did not really have a need to drive the amp with the Omni so I never made
>> the mod but now I do so.  Can any of you more technical than me forum
>> members confirm it is likely the D4 diode on the QSK board or re-direct me?
>>
>> Very 73,
>> Doug, W9PN/5
>> Amarillo, TX
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