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
>
>--
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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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