[R-390] Procedure for setting T401

[dog]

Yeah, I thought about that T401 after I sent the message. I'll take a 
look with a scope and also with the SA.

I got the RF, PS, Audio and PTO back in the other one so far and no 
missing green screws, Oldham coupler or spring. But I've got a couple 
new meters I want to put in the front panel, so I'm working on that. The 
IF is ready, but I repaired the filters and I don't think they've aged 
well. This one, the front panel is not in great looking shape, but 
almost acceptable. I still wish there were an acceptable IF replacement.

On 7/16/2019 16:38, Larry H wrote:
> Hi Dave,  I know that my 390As says T401 on the T207 can, so I assume 
> you meant T207.  It should be adjusted for maximum 17 mh signal while 
> monitoring it with a scope on V202 pin 7.  You should only see a nice 
> clean 17 mh signal with it in AGC mode and no input, if there's 
> something else in there, that's a problem.
>
> Regards, Larry
>
> On Tue, Jul 16, 2019 at 10:46 AM dog <agfa at hughes.net 
> <mailto:agfa at hughes.net>> wrote:
>
>     Since the voltage on E209 is so hot in my 390A (-30VCD), I've been
>     looking for a procedure to set T401. I don't seem to be able to find
>     anything. Any ideas? I thought maybe I'd stick a high Z probe in E209
>     and look at it on the spectrum analyzer and set it for the best 17MHz
>     signal. Don't know if there's any harmonics or glitches that are
>     making
>     it so high but maybe the SA would tell me something. I haven't
>     looked at
>     my other 390A, it's all apart right now, I should start putting it
>     back
>     together before I start loosing parts.
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