On Fri, Nov 12, 2004 at 02:11:14PM -0500, Tom Rauch wrote:
> > IMHO (getting really brave jumping in here - so emphasis
> on the H),
> > the "in band" IMD is a very important feature when using a
> receiver
> > that will be dealing with lots of noise (like Topband).
>
> Indeed it is.
>
> This is the difference between receivers I like to use for
> weak CW signals and those I refuse to use.
>
> I hope the ARRL will be testing and reporting that
> characteristic soon in reviews.
I have started seeing this in the extended product reviews the ARRL
does. For example, on page 23 of the extended product review of the
IC703 shows inband IMD - showing the typical -35 db products.
http://www.arrl.org/members-only/prodrev/pdf/lab/IC703-etrr.pdf
I assume the RF level is being set by the AGC. They show four
graphs - with S9 and S9+60 db levels, and the AGC fast and slow.
Tree
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