[TenTec] OMNI V Frequency Changes
Bob McGraw - K4TAX
RMcGraw at Blomand.net
Fri Feb 28 07:46:29 EST 2014
Sorry, with my comments and suggestions, I was thinking of the Omni VI.
----- Original Message -----
From: "David and Dianne on Comcast" <dhhdeh at comcast.net>
To: "Ten Tec Reflector" <tentec at contesting.com>
Sent: Thursday, February 27, 2014 11:05 PM
Subject: [TenTec] OMNI V Frequency Changes
> There is no master reference TCXO or crystal oven
> in the Omni V as in the Omni VI.
> And as the frequency display is not a frequency
> counter as in the Corsair II, the display and the
> actual frequency of the radio as controlled by the
> L/O will change relative to each other as its
> temperature of the Omni V changes while in use.
> It's frustrating to some and not to others. No
> amount of cleaning of contacts or variable caps
> etc, will materially improve this condition.
> The calibration feature of the N4PY V.9 chip will
> allow for operator compensation for this situation
> by freezing the display while you tune the radio
> for better accuracy on the fly. The N4PY V.9 chip
> is a "must have" for the Omni V.
> IMO this frequency display without a reference
> frequency control provision was a foolish
> engineering/design decision and compromised the
> Omni V which otherwise is a great radio and IMO
> superior to the Omni VI in its RX audio quality.
> The exclusion of a RIT/XIT control also caused it
> to lose appeal with many operators. But I still
> have mine and do like it to this day.
> I had long discussions with Don Proudy of TT
> service (who left the company several years ago)
> about all of these Omni V issues. He was the Jedi
> Master of the Corsair, CII. Omni V and Omni VI. At
> his continued suggestion, TT mgmt. finally
> relented and substituted the fluky crystal oven in
> the early Omni VI's with a TCXO in its later
> production runs. His departure resulted in a loss
> of a lot of practical knowledge and experience
> with all of these radios.
> I have performed many great mods to my Omni V and
> despite its design warts which are real and many,
> it still outperforms many radios of current times
> in the quality of receive audio and ease of use.
> And finally as I responded on this forum back in
> late October before I sold my Omni VII, whose
> firmware revisions have still not been forthcoming
> as promised, what is TT up to today? It's still a
> mystery to me.
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