[Hallicrafters] SX-42 Alignment

[Rich Soennichsen]

> There definitely is a problem. Those conditions will get you a very dead
> receiver.

Surprisingly it works.  All the BC stations are at one end of the dial
though.  FM works also  but has similar weirdness.

>
>   I would check any mica caps in the local oscillator section.  There are
> trimmers across most of the LO coils, and one or more may not be working right.
>
> First, I would do the LO test on another band, say the next frequency band
> up.  See what happens there.
>
> >  I don't know whether this needs to be addressed directly or if the RF
> > alignment will take care of it.
>
> Yes, it needs to be solved first.  The RF alignment will  not correct what
> you report.
>
> It will be helpful to know that the 455 kc IF is working well at (about)
> that frequency.  Test with a modulated 455 kc signal at the input.  (6SK7
> pin 4)
>

The IF alignment went well but then again I was injecting the 455kc.
So now I guess I need to fix the upstream LO problem....

Rich