[TenTec] Omni.D 546

[Bob, WB2VUF]

Hi, all,

The Ten Tec PTOs are temperature compensated, but some are better than 
others. On my Corsair, the temperature compensation capacitor is C9 on 
the schematic, labeled "selected in production".  C9 is on the foil side 
of the PTO board, so you can get to it without removing the PTO.  If you 
have some negative temperature coefficient caps, typically N750, you can 
try different combinations to improve the warmup characteristics. The 
other option is to keep the radio on all the time.

73,

Bob WB2VUF

On 5/30/2024 7:58 AM, AA2PM, Paul Mondok wrote:
> Good evening, Andrew
>
> Drift during the first half hour of operation is normal.  There is also a
> 750 Hz transmitter off set in CW mode.  Is this the TX/RX alignment you are
> referring to?
>
> Assuming that the unit you purchased is in good condition, I think you will
> enjoy using it once you become accustomed to some of its "personality".
>
> 73,
>
> AA2PM, Paul
>
> Before printing this document, please think about the environment.
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces+aa2pm=earthlink.net at contesting.com] On
> Behalf Of Andrew Alleyne
> Sent: Wednesday, May 29, 2024 2:16 PM
> To:tentec at contesting.com
> Subject: [TenTec] Omni.D 546
>
> Greetings,
>
> I recently became the owner of a Omni.D 546.
>
> It drifts; the RX and TX are not aligned.
>
> Any suggestions for repair?
>
> Andrew
> 8P5AJ
> 73
>
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