[R-390] Reduced 500-1000KHz sensitivity

Cecil Acuff chacuff at cableone.net
Tue Mar 15 23:44:17 EDT 2011


Sound like you may have either a slug rack sticking or you have dropped a 
slug.  Sometimes they come loose from the adjusting screws and fall down 
into the coil causing a misalignment.

Cecil
----- Original Message ----- 
From: "Ian Gallimore" <iangallimore at rogers.com>
To: "R-390A Group" <r-390 at mailman.qth.net>
Sent: Tuesday, March 15, 2011 10:05 PM
Subject: [R-390] Reduced 500-1000KHz sensitivity


> Hi, group,
>
> My 390A was purchased from Fair five or six years ago.
> I've recently noticed a significant decrease in sensitivity in the 
> 500-1000KHz band. Other bands appear to be OK. Just before this occurred, 
> I noticed that the sensitivity could be dramatically increased by turning 
> the MHz knob a little toward the 01 setting and back, but this no longer 
> helps.
> Has anyone else noticed this?
> Any suggestions gratefully received.
>
> 73
>
> Ian VA3ODA
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