10-09-2016, 02:56 PM
Oh that Ok anybody that know me know I'm a little thick! Well it sound like you've got too much capacitance at the low end of the dial on the BCB or there could possibly be a mechanical problem has shifted the pointer a bit.
Adding the afor mentioned gimmick cap will make it worse.
So what to do?? Well if you look at the tuning cap closely you will see several things. It has two sections, one tunes the rf signal and the other tunes the oscillator. On the two end plates of each section on the rotor you see a few cuts in the plates. These are used to set the tracking. You CAREFULLY bend out the small section that is closest the the stator( if the cap is all the way open it would be the part that moves into the stator as you turn to dial toward the lower part of the band) just a little on the section that tunes the oscillator. Just bend it out a little like an 1/8" this will reduce the total capacity of the tuning capacitor at the low end. It will also effect the SW band also.
Adding the afor mentioned gimmick cap will make it worse.
So what to do?? Well if you look at the tuning cap closely you will see several things. It has two sections, one tunes the rf signal and the other tunes the oscillator. On the two end plates of each section on the rotor you see a few cuts in the plates. These are used to set the tracking. You CAREFULLY bend out the small section that is closest the the stator( if the cap is all the way open it would be the part that moves into the stator as you turn to dial toward the lower part of the band) just a little on the section that tunes the oscillator. Just bend it out a little like an 1/8" this will reduce the total capacity of the tuning capacitor at the low end. It will also effect the SW band also.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
