[R-390] R-390A help needed

[B Riches]

 The trimmers do not adjust the frequency - just the oscillator output for that selected crystal.
73,
Bill Riches, WA2DVUCape May
    On Sunday, February 9, 2025 at 09:09:30 AM EST, Bob Camp <kb8tq at n1k.org> wrote:  
 
 Hi

Most of the alignment work (including adjusting the trimmers on the crystals to set them on frequency) 
is done from the “top side” of the radio. Unfortunately some is not all. There are a couple things on the
“bottom side” of the radio you will want to get at. Setting the radio on it’s side (with the power transformer 
“down”) is usually the best approach for those bottom side things. 

As you are putting the radio on it’s side you “discover” the need to support it so it’s not resting on the 
front panel. Not a complicated problem to solve, just better to work it out *before* the move process 
starts :)

As you go into “alignment” you are likely to move over to “repair”. Best to have a set of tubes handy
to do swap outs as the first stage of that process. Again, not hard to do, but best to stock up before
the process starts. 

Bob

> On Feb 9, 2025, at 5:26 AM, Karsten Simon via R-390 <r-390 at mailman.qth.net> wrote:
> 
> I do have this manual of course, tnx Greg. Moving this boat anchor lets one
> feel the solid physical fundament of its lore. Whenever necessary a
> neighbor's son helps me doing that.
> 
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