[R-390] Dial off 50KHz?

[dog]

Thanks Larry,

I'll turn the PTO 1/2 a turn. I'm sure it got messed in all my 
masegnations. I also replaced those orange drop .1uF with something a 
bit more manageable. I used some Panasonic Films. I've got the AM sig 
gen going into it at 40dB on the carrier meter for several hours now and 
it's holding gain fine. Haven't heard a glitch out of it yet. I'll turn 
it off tonight and start it up again tomorrow when I get home late in 
the morning and keep an eye on it. Thanks again.

Dave N3DT


On 10/7/2018 20:31, Larry H wrote:
> Dave,  You're fast, wow.
>
> Since the frequency discrepancy is also above 8 MH, that rules out the 
> 1st osc.  I assume you are using the same 2nd xtal osc, so it must be 
> caused by the PTO shaft moving a little.  50kc is exactly a half turn.
>
> Regards, Larry
>
> On Sun, Oct 7, 2018 at 4:10 PM dog <agfa at hughes.net 
> <mailto:agfa at hughes.net>> wrote:
>
>     I put the original RF section back in after finding the cap I left
>     out
>     that makes the calib osc work. So now the calib osc works. But I'm
>     not
>     sure what I did, other than I put the other RF section I had in, it
>     didn't work, so I removed it and after I fixed the cap in the old RF
>     section, now the dial is off by 50KHz reading low. Actual 10.1 reads
>     10.05 so the 10M band shows up below 10.1. I always turn the PTO and
>     dial to far left like the book says and I'm wondering if I got it off
>     somehow? Should I try to turn the PTO maybe 1/2 a turn, I'm not sure
>     what 50KHz is in relation to a half turn on the PTO? I guess I could
>     figure it out. At least the calibrator is working now. Maybe I can
>     get
>     rid of this thing.
>
>     I've found it easiest to turn the RX upside down to get the Oldham
>     coupler and spring back in. And loosen up the PTO. I can get the RF
>     section in and out in about a half hour now with all the cables
>     and screws.
>
>     Dave
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