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

[ac5aa@juno.com]

Gee, and what does an IC-781 cost compared to an Omni-VI?  Then add a
$300 DSP on top of the 781 . . . methinks thou protesteth too loudly!

	73,  Duane   (By point of comparison,  I moved from IC-765 to Omni-VI+
and found a big difference in RX audio listenability, and crowded band
performance.  Missed the IF notch and SSB monitor.)

On Mon, 31 May 1999 13:30:25 EDT K3BU@aol.com writes:
>
>In a message dated 5/31/99 8:40:59 AM Eastern Daylight Time, 
>n1eu@yahoo.com 
>writes:
>
><< the center point of the pass band
> seemed to shift  >>
>
>
>I noticed the same thing while testing/measuring IR filters. When I 
>checked 
>the same filter later on (after more warmup) the bandpass curve 
>shifted. 
>I used Omni VI mod+ and IC 781 in the contest. Few times I switched 
>between 
>them, to see how much better the Omni is, but was not overwhelmed. 781 
>
>allowed better audio tailoring for more comfortable and adjustable 
>audio 
>characteristic. With addition of DSP 599, even more flexibility. At 
>the times 
>even 125 Hz filter in 781 pulled things that other filters or Omni 
>would not 
>hack it. I could not say that Omni was quieter, lower noise floor? 90% 
>of the 
>time the main rig was 781.
>Think that I like, is Omni VI being companion to 781 as a second 
>radio, 
>allows transceive, sharing VFO or dual receive with tracking (will 
>need 
>calibration when drifting stops). Computer control scheme is the same 
>
>(similar?) as Icom and Icom interface works with both.
>Omni was loaded with "CW combo" built in - IR 2.1, N1 - TT 1.8, N2 - 
>IR 400, 
>2nd IF built in TT 1.8, then switchable TT 500, IR 400, IR 250.
>Icom had IR 400, 250, 125.
>Brief check between Omni and TS870 with IR filters mods also didn't 
>produce 
>what charts in the TT ads show (noise floor). Maybe this TenTec 
>"thing" is 
>more like (religious) Apple following? Final judgment will be after 
>some 
>tests on the bench, where things can be measured more precisely. 
>Looks like everybody enjoyed higher bands, 160m was lonely, very few 
>callers. 
>Beacons were NQ4I, HC8N and Eh? (VA1A). I hoped for more friends to 
>drop by 
>and say 59something. I beat my VE3BMV 13 year old record, but came 
>short of 
>world record, not enough activity.
>
>Yuri K3BU, VA1A
>
>--
>FAQ on WWW:               http://www.contesting.com/tentecfaq.htm
>Submissions:              tentec@contesting.com
>Administrative requests:  tentec-REQUEST@contesting.com
>Problems:                 owner-tentec@contesting.com
>Search:                   http://www.contesting.com/km9p/search.htm
>

Duane A. Calvin, AC5AA
Austin, Texas
ac5aa@juno.com -or- ac5aa@earthlink.net
Day:  dacalvin@us.ibm.com

--
FAQ on WWW:               http://www.contesting.com/tentecfaq.htm
Submissions:              tentec@contesting.com
Administrative requests:  tentec-REQUEST@contesting.com
Problems:                 owner-tentec@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm