[TenTec] [Norton AntiSpam] Re: Corsair vs. Orion (weak signal)
bob at cytanet.com.cy
Wed Aug 3 02:39:26 EDT 2005
Well that depends upon what it is zero beat with. If it is zero beat with
your listening frequency, then you are correct, assuming the IMD product is
an unmodulated carrier. However, I think zero beat in this context means
"on the same frequency as the signal you are attempting to receive". In that
case, the problem is rather more significant.
----- Original Message -----
From: "Robert & Linda McGraw K4TAX" <RMcGraw at Blomand.Net>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Wednesday, August 03, 2005 2:12 AM
Subject: [Norton AntiSpam] Re: [TenTec] Corsair vs. Orion (weak signal)
> Now wouldn't a IMD birdie that is zero beat produce nothing as far as an
> audible signal is concerned? The only thing is that an "on frequency"
> signal might capture the AGC which would reduce the level of the desired
> Bob, K4TAX
> ----- Original Message -----
> From: "Bill Tippett" <btippett at alum.mit.edu>
> To: <tentec at contesting.com>
> Sent: Tuesday, August 02, 2005 9:03 AM
> Subject: [TenTec] Corsair vs. Orion (weak signal)
> > W1ZR wrote:
> > >Thus a receiver with better 3OIMD performance will allow that skilled
> > operator to do a much better job of copying the weak signal than a
> > receiver
> > with poor 3OIMD response.
> > Especially so if an IMD birdie happens
> > to zero beat the signal you are trying to copy.
> > The human ear (or any DSP) cannot cope with that
> > at all. The only solution is to remove the IMD.
> > 73, Bill W4ZV
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