[Heath] SB-100 vs SB101/102

[G3OOU at aol.com]

Hi Ken
 
My SB100 circuit does not show any CW filter or switching facility so it  
must have been a mod kit put out by Heathkit later in the production  cycle.
 
I have been able to repair the filter switch knob on an SB101 using a piece 
 of a sewing pin and some Araldite (two pack epoxy) adhesive - requires a 
steady  hand an a very small drill bit. Alternatively, the other way is to 
file off the  remnants of the broken part from the main section, drill a 
suitable sized hole  and glue in a small (8BA or 10BA) bolt with a smooth spacer 
over it. The latter  method is much stronger but does not look quite so good.
 
I have put some write-ups and photos on 
_http://www.qsl.net/g3oou/heathsparesandrepairs.html_ (http://www.qsl.net/g3oou/heathsparesandrepairs.html)  of 
 various repairs.
 
73

Bob

Bob F Burns
C Eng,  FIET, MSE
Amateur Radio Callsign: G3OOU
Registered RSGB  Instructor
G-QRP Member No: 6907; Zone: 14, QRA: IO91WH; WAB:  TQ25
Secretary of Crystal Palace Radio & Electronics Club: _www.g3oou.co.uk_ 
(http://www.g3oou.co.uk/) 
Technical web site: _www.qsl.net/g3oou_ (http://www.qsl.net/g3oou) 
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