[TenTec] TenTec Digest, Vol 180, Issue 9

Carl Moreschi n4py3 at earthlink.net
Mon Dec 11 18:31:15 EST 2017

No jumper is ever required between TXEN and TXOUT on the Orion and Orion 
II.  But both keying loops must be enabled from the Orion menu.

Also you key also use AMP KEY out instead of the keying loops if you 
don't need QSK.  These do not need to be enabled from the menu.

If you have either keying loop enabled but nothing connected between 
TXEN and TXOUT, you won't be able to transmit on the Orion.

Carl Moreschi N4PY
58 Hogwood Rd
Louisburg, NC 27549

On 12/11/2017 5:50 PM, Michael Marx wrote:
> Barry,
> I am saying the radio will key if key loop 2 is turned on or off.   key loop 1 will not key the radio if key loop 1 is turned on.  If it is off, the radio will key.
> This is with nothing connected to the key loop jacks.
> With the radio alone, it will not key at all with key loop 1 turned on.
> I realize the older radios need a shorting bar between TXout and TXen.
> But, is this the case with the Orion?  If so, why does it work when key 2 is activated?
> I am afraid to put a jumper on key loop 1 until I know it’s ok.
> thanks,
> Mike
> Are you saying keying loop #2 works with the amp connected to TX Out2/TX
> En2?  If not, what is connected to those jacks?
> 73, Barry N1EU
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> On Sun, Dec 10, 2017 at 5:41 PM, Michael Marx<sndtubes at vacuumtubes.com<mailto:sndtubes at vacuumtubes.com>>
> wrote:
>> Hi Guys,
>> I have been dealing with a sick Centurion.  Still having problems.  I am
>> going to rebuild the QSK board and try again.
>> However, when I was testing the Centurion with my Orion 1, I had keying
>> loop 1 connected and it was working?.for a short time.   Something happened
>> when I was testing and suddenly the amp would no longer key.  I think the
>> problem lies in the QSK board.  I?m sure something failed there again.
>> But, when the amp stopped keying, so did the radio.  If I have the keying
>> loop turned on, the radio will not key at all.  If I turn the key loop off,
>> the radio keys fine.  if I turn on keying loop #2, the radio keys fine.  So
>> the radio keys fine except when I have key loop 1 turned on in the menu.
>> So my question is, have I damaged keying loop #1?  If so, what do I need
>> to do to fix it?
>> thanks for all of the expert advice!
>> 73
>> Mike WB0SND
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