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THE AM BULLETIN BOARD => Technical Forum => Topic started by: KF8XO on March 09, 2008, 05:30:23 PM



Title: S-20R Trimmer Cap Map
Post by: KF8XO on March 09, 2008, 05:30:23 PM
Anyone have a reaable version of the map to the trimmer caps on an S-20R/ The one on BAMA is completely unreadable...looks like a fax copy.

Tnx es 73.


Title: Re: S-20R Trimmer Cap Map
Post by: KB5MD on March 09, 2008, 05:43:50 PM
Don't have scanner at home so will have to talk thru the mapping.....
Looking at bottom of chassis with front panel to the top and the trimmers to the left....first row down is the oscillator (left to right) Cc Cl Ci Cf...next row down is R.F. section, (left to right) Cb Ck Ch Ce.....next row down is Antenna (left to right)  Ca Cj Cg Cd   Bands are left to right (1 , 2, 3, 4).  The two padders caps at the very top are (left) band 1  (right band 3)  Maybe that is not too confusing.  Hope this helps


Title: Re: S-20R Trimmer Cap Map
Post by: KF8XO on March 09, 2008, 07:50:21 PM
PERFECT! Thanks much, that and the half cocked copy I had brought it all together.
Radio is playing like the day is was built, except for the stripped band 3 pad. Seems some HH had his willy skinners in her just cranking stuff down. Oh well, supposed to have a parts rig on the way, so I have my first "surgery" boarded for the old gal.

Thanks for the quick response as well, can always count on you all.

Jeff-KF8XO
AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands