[R-390] 7 Meg low sensitivity

[Leigh Sedgwick]

Hi Keith,

Yes, I have restored a R-390A (including RF deck) with all modules 
manufactured by Amelco (with the exceptions of the PTO).  I have the same 
problem here, i.e., lower sensitivity on 7 mc only.  I have gone through a 
complete alignment 4 or 5 times and cannot improve performance.  I contacted 
Chuck Rippel for advice and he told me that some R-390A's exhibit this 
property and he has not heard of a work-around or definitive explanation for 
it.  Not too big a deal for me but it there were a way to improve it, I 
would.

Happy Trails

73 de Mike
K7PI
Mercer Island, WA

----- Original Message ----- 
From: "Keith Densmore" <densmore at idirect.com>
To: <r-390 at mailman.qth.net>
Sent: Saturday, July 28, 2007 8:38 AM
Subject: [R-390] 7 Meg low sensitivity


>I have two R-390A's that exhibit the same problem--
> lower sensitivity on the 7 meg band but 6 and 8 are fine, as are all 
> others. Good double peak on the crystal trimmer, and all other alignment 
> issues seem fine.
> There might have been a previous thread  on this, anyone remember year and 
> month?
>
> Thanks, 73,
> Keith
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