[Milsurplus] BC-221-AK Suggestions wanted.

[J Forster]

You might look and see if the set screws are Bristol Spline, rather than
hex. If so, you won't get them loose w/ a hex driver.

IMO, it's a useful item.

FWIW,
-John

===========

John Hutchins wrote:

> Hello Listers -
>
> A while back, purchased a BC-221-AK;  Yes I know its not worth its
> weight.  This is a tune up project to get back my soldering and circuit
> debugging skills back in order with out breaking something of more
> useful value.  So in this sense its worth the effort.
>
> Problem 1 :
>   Knob set screws will not loosen up an come out.
>
> Problem 2:
>   Low end of the Low Band is out of calibration.  What is interesting is
> the High end of the Low Band is tracking by the book.  Resistors are way
> out of spec. and need to be replaced.
>
> Due to problem 1;  Did not replace resistor in the Crystal Oscillator
> circuit across the crystal.  Need to remove the Master Oscillator sub
> chassis.
> Due in part to problem 1;  Did not replace any resistors in the Master
> Oscillator circuit on the Coils or the resistor/cap mounted on the band
> switch that feeds the Grid on the Master Oscillator.  To replace the bad
> components on the coils and coil switch I need to remove the knobs,
> Problem 1.
>
> Thanks
> Hutch