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Model 43 Alignment Issues
#1

Hi Folks,

I have finished re-capping my Model 43, and finally got around to the alignment.  I followed the directions in the Service Guide, basically.  I've run into a few issues which I can't figure out!  Your comments will be very much appreciated.  I am using a Triplett 3432-A signal generator, and a little frequency counter to fine tune it before I use it, so I'm confident the signal is accurate.  I was told to adjust the dial, with the tuning capacitor plates totally closed, with the pointer flush with the the line at the left end of the dial scale, around 550 KHz.

1)  When I went to adjust the 1400 KHz trimmer for the broadcast band, I couldn't hear the signal generator modulated signal at all.  When I tune between 1300 and 1400 KHz on the broadcast band, the radio goes from static to very quiet, anyway.  I can't find any plates touching on the tuning condenser...  I ended up adjusting the trimmer for maximum volume for a station I found around 1200 KHz.  I didn't know what else to do.

2)  It seemed to take quite a bit of adjusting of the wavetrap trimmer to get minimal output volume at 450 KHz.  Not sure if that bodes ill or not...

3)  I found the 700 KHz signal with the Philco dial set around 750 KHz, and adjusted it there for maximum volume.

4) It's really annoying, but dial settings match up like this with a few stations:

First band:  KFI AM 640 with dial set at 670 KHz
Second band:  a station with frequency 1570 KHz when dial is set to 1650 KHz
Third band:  too noisy to find any stations
Fourth band:  WWV comes in with dial set at 14.6 MHz and 16.4 MHz

Is the situation hopeless?  It's so annoying to have a useless tuning dial...

Thanks!

Jim


Messages In This Thread
Model 43 Alignment Issues - by jhgrahamjr - 04-18-2015, 07:06 PM
RE: Model 43 Alignment Issues - by morzh - 04-18-2015, 08:02 PM
RE: Model 43 Alignment Issues - by Ron Ramirez - 04-18-2015, 10:19 PM
RE: Model 43 Alignment Issues - by morzh - 04-19-2015, 05:06 PM
RE: Model 43 Alignment Issues - by jhgrahamjr - 04-24-2015, 12:46 PM



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