[TenTec] Omni 6 passband shifts with heat???

[ac5aa@juno.com]

Hi Barry,
	Heard you once in the contest - you were doing S&P and nailed someone
either just after or just before I did.  Your signal sounded FB.  I'm
curious, are you running with a low sidetone?  I use the default 700 Hz
sidetone and the PBT control is almost always at 12:00 position.  If you
were running a low frequency sidetone, say 400 Hz, then the 11:00
position is correct.  If not, then it sounds like the alignment is not
right.

	73,  Duane    AC5AA


On Mon, 31 May 1999 05:41:47 -0700 (PDT) N1EU <n1eu@yahoo.com> writes:
>
>Saddled up my Ten-Tec twins (Omni 6+/Centurion) for a
>ride this weekend in the WPX cw contest.  It was a
>blast, but noticed some quixotic behavior at times by
>the Omni.  
>
>In the heat of the battle (yes, she did get fairly
>warm to the touch), the center point of the pass band
>seemed to shift - the PBT control needed adjustment
>from about my normal 11 o'clock over to 1 o'clock. 
>Before I realized what had happened, it just seemed
>like I was dead in the water with a dramatic loss of
>sensitivity (the vast majority of the time was spent
>with 250/250 filters engaged).
>
>The heat situation was exacerbated from "running"
>mode, i.e., calling cq or qso'ing every 10 or 15 secs.
>
>Any other cw contesters out there notice similar
>phenomena, or any other comments?
>
>Thanks & 73,
>Barry  N1EU
>
>
>
>
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Duane A. Calvin, AC5AA
Austin, Texas
ac5aa@juno.com -or- ac5aa@earthlink.net
Day:  dacalvin@us.ibm.com

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