[Scan-DC] Re: Jeff's recent observations

[Dave Emery]

On Thu, Jun 03, 2004 at 10:54:37AM -0400, al wrote:
> 
>  The PCR1000 in two "feed-back" posts did better than the 780 re 
> intermod/images.A diatribe on why this can not be fact but only because the 
> owner is to dumb to know how to use his/her radios or describe an exact use 
> of a word will not change the end result.


	Probably the best radio for your purposes would be one of the
ICOM varactor tuned preselection type receivers (the ICOM-7000, 7100,
8500, 9000 (the 9000 is probably the best)).   I am not sure the
PCR-1000 has the same quality of rf front end as these (don't own one so
I have little information).   The Unidens and GRE designs use multiband
bandpass filter type front ends which are cheap (and avoid some patent
issues) but lacking rf selectivity mean that intermod and blocking in
their fronts is much worse.

	All of the above ICOMs scan slowly compared to a BC780, but
their rf performance and AM audio is better.   And of course they
can be computer controlled too...

	And should you really really really want something good for this,
some of the recent Watkins Johnson 86xx radios are pretty much the gold
standard (and do show up at fleas and on eBay from time to time).
They also can be computer controlled.   They are what the pros would
use (or would have used a few years back).

	Used ICOM receivers can be found for modest sums... (though 
there are some capacitors that may need replacing to bring them up
to snuff).


-- 
   Dave Emery N1PRE,  die at dieconsulting.com  DIE Consulting, Weston, Mass 02493