[criageek]

WOO HOO!!

https://drive.google.com/file/d/1j5hlnXt...sp=sharing


The latest problem I had was self-inflicted  [Image: http://philcoradio.com/phorum/images/icons/sad.gif]  When I received the replacement IF (I've been calling it the 3rd IF, the Philco documentation calls it the AM detector/FM discriminator), I just tacked the wires because I knew I would remove it to clean it and replace the wires if it worked.  It did work, so I removed it to do the cleaning and wire replacement then soldered it in permanently.  Well, it turns out I reconnected one of the wires to the wrong terminal  [Image: http://philcoradio.com/phorum/images/icons/shocked.gif].  I made the correction and boom!  Lots of FM!  To me it sounds a little distorted, and the tracking is off.  When I set it according to the procedure and get the high end lined up with the dial, the low end is off...I receive a 92MHz signal at about 91.  Also, there is at least one station that is in completely the wrong place.  I'm receiving 90.9 at the top end of the dial, at about 107 or 107.5.

I'd like to do the part of the FM alignment that involves adjusting the coils (FM aerial, FM RF, and FM oscillator) to see if that helps with these issues.

   
   

The procedure calls for using a powdered-iron tuning core (see the note toward the bottom of the FM alignment instructions) which I don't have.  I think I've seen it called a magic wand.  Can this be done without one?  If so, what is the procedure?

Thanks for any help!

Rich