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Philco model 60 not tracking correct
#1

Hi ,  I have been working on this for a while.  I have replaced the secondary I F , rewound the primary on the oscillator twice I went the wrong way the first time .   18 wines of 39 ga.  Did the small coil on the antenna coil (.7) .   
   On the schematic on the oscillator  (item 13)  110 pf cap  I found a mica mold cap rated at 60 pf  in that place. ( blue, brown, yellow).  I measured it out of circuit with a lcr meter it read 57 pf .  I did install the 110 pf silver mica. Everything was going well in the alignment until I went to adjust the 600 padder .   I found that up at 700. I tried rocking and dragging it down to 600 that did not work.  Peaked strong at 700.
   I put the 60 pf back in and did it all again. This time the wave trap did not work at all couldn’t tune it down like I did the first time.   Tuned in 1400 with the oscillator and the antenna padder on the tuning condenser .   Better with the 110pf.  Found 600 at 700 again. Just as strong as before.  Oh, by the way the 60pf cap is mica. (cut it open ) . I put 110pf back in .  Tried another 6a7 same thing. 
   Police band works. The tracking is off also .     
     Any ideas?                    

         Thanks.        Dean


Messages In This Thread
Philco model 60 not tracking correct - by Dean1673 - 03-14-2021, 04:43 PM
RE: Philco model 60 not tracking correct - by OZ4 - 03-14-2021, 07:37 PM
RE: Philco model 60 not tracking correct - by OZ4 - 03-14-2021, 08:41 PM



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