[R-390] The OLE receiver sensitivity test revisited

[rbethman]

It can be very beneficial to make receivers highly sensitive to signals.

I'd rather have to turn down the receiver gain from the front panel in 
lieu of trying to add a preamp to one.

Just my $0.02.  Take it for what it is worth.

I've managed to get one so sensitive that when another Amateur lit up in 
my city, that the receiver was disconnected from the antenna, but had 
about a three ft piece of coax still attached, that the R-390A boomed 
out the audio with him calling CQ.

My shack is in the lower floor of the house, and the windows are about a 
foot and a half above ground, with the foundation going up above them by 
around four or so feet.  That was what surprised me!

Bob - N0DGN

On 2/29/2012 10:48 AM, Todd, KA1KAQ wrote:
> On Wed, Feb 29, 2012 at 8:50 AM, Curt<cptcurt at flash.net>  wrote:
>
>
>> I am very curious as to what others might add to this as I am really a
>> novice in the front-end measurement arena.
>>
>
> You might find some useful info here:
>
> http://www.w1vd.com/BAreceivertest.html
>
> Jay has been working on this for a number of years now, specifically
> dealing with older tube gear. He's quite fluent in such things, and I'm
> sure would be more than happy to exchange thoughts and ideas on the process
> and results. He also has links to older test data as well as Bob Sherwood's
> data.
>
> de Todd/'Boomer'  KA1KAQ/4
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