Alrighty... almost a week later, and I've solved a few minor glitches.
The PTT/705 issue has been resolved. The 705 was stored for a while
with a 9V in place. The battery popped,
and took the NPN transistor with it. Without that transistor
functioning, the 705 is a mess. Confirmed with Ten Tec
service. Problem solved... mic is aside for future repair or parts.
The Shure 450 had a non-functioning PTT switch. So, that was like
adding insult to injury. PTT switch has been
replaced, and that mic is now working perfectly, both in PTT and VOX
mode.
The Omni V was not to blame, instead TWO faulty mics.
Thank you to all who offered help and suggestions... A little bit of
remedial troubleshooting on my part identified the
problems... should have done that before emailing here.
Thanks!
John
K2JNC
On Aug 17, 2009, at 6:30 PM, John Callari wrote:
Hello...
I acquired an Omni V this weekend with a model 705 microphone... When
the 705 is set to PTT (via switch in base)
and the Omni is set to PTT (via depressed PTT/VOX button on faceplate)
the Omni's receiver drops out completely.
It is as if the PTT relay is activated... and a press of the PTT
button on the mic allows for transmit, but the receiver
never comes back on. It's locked out.
When a Shure microphone is attached to the radio, and the PTT/VOX
button is depressed, the Omni "acts" normally.
Receiver is still active, etc. The PTT button on the Shure does not
work at all in the Omni's PTT mode. But, when
the Omni is set to VOX, with the PTT button locked on the Shure
microphone, VOX operation is normal.
VOX seems to be working just fine, with no issues at all... PTT is
not operational at all.
Is this a bad PTT switch? Relay? Solder connection? Or something
that may need to be resolved by a TenTec
tech?
Thanks!
John
K2JNC
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