Hi Frank,
Line noise is not an easy thing to solve, however,
One the best radios for this was the OMNI D or OMNI C with the 500 hz filter
and noise blanker. These can be had for $200 to $300.
Used it and loved it, just doesn't have the computer interface stuff,
The OMNI IV rigs are advanced but also run more expensive used than most
some new rigs, at about $1400 to 1700 dollars depending on version and
filters, I think you'd want the ones with two sets of filters and the dsp
add ons.
Best wishes,
Rich
K5SF
>From: Frank Brady <ftbrady@sbcglobal.net>
>Reply-To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
>To: tentec@contesting.com
>Subject: [TenTec] cw rcvr fundamentals
>Date: Fri, 22 Jul 2005 13:51:55 -0500
>
>Greetings to all of you lucky TenTec owners.
>
>I hope this is the right forum for a question I cannot resolve because I
>haven't found a way to make an on-air comparison of my TS-140 and FT100D
>with a TenTec xcvr.
>
>During a recent contest, while trying to dig VERY weak dx signals out of a
>pile of 9+20 contest guns and power line noise, I began to wonder if there
>was an affordable (used) rig out there that would do the job.
>
>Problems this (CW only) operator hopes to solve:
>
>With the only two solid state rigs I've owned, if the noise blanker
>threshhold is high enough to silence the power line buzz, then a strong
>signal almost anywhere on the band chops up the weak signal so bad I can't
>copy it.
>
>With my narrow (250) CW filter, the ringing degrades copy almost as much as
>it helps.
>
>I know a "notch filter" would be great, but is that an obsolete term with
>all of the new DSP enhancements and things like "Roofing Filters" (?)
>
>SO.... my question is:
>Is there a whole lot of difference between a "loaded" Omni 5 and the state
>of the art Orion when it comes to pulling that weak dx signal out of the
>line noise QRN and strong signal QRM?
>
>73 and best of luck to you Orion "1" owners.
>
>Frank W0ECS
>
>
>
>
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