[Heathkit] SB-303 caps.

kiyoinc at attglobal.net kiyoinc at attglobal.net
Fri Jun 13 06:21:20 EDT 2008


Here's my list of SB-303 caps.  I was considering assembling re-cap kits 
but probably don't have the time to do this.

=================  Electrolytic caps in SB-303

Antenna, RF, HO, crystal boards

None


Mixer and RTTY boards

None


IF and Audio board

25-123 1 2 uF 25V, C527 Audio amp
25-125 1 5 uF 10V, C521 AGC time constant
25-116 1 50 uF 15V, C525 Audio preamp
25-146 2 100 uF 30V, C531 Audio out, C523 Audio in
25-199 1 500 uF 25V, C529 Audio amp


Power Supply BFO board

25-123 3 2 uF 25V, C617 output from zener, C631 bias, C615 zener
25-54  1 10 uF, C604 calibrator
25-199 2 500 uF  25V, C613 regular main supply, C616 bias
25-192 1 2000 uF 40V, C612 main supply

========================= Consolidated List

4 - 2 uF 25V
1 - 5 uF 10V
1 - 10 uF 15V  (add 1 for alternate time constant)
1 - 50 uF 15V  (add 1 for alternate time constant)

2 - 100 uF 30V
3 - 500 uF 25V

1 - 2000 uF 40V

=================

I wanted to play around with AGC timings. 

de ah6gi/4



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