[Elecraft] Slightly off top amp question

[Mike Harris]

G'day,

| > I've just bought an old FL-2100B amp to do up, and run with my K2 (I 
have
| > the bits and pieces on order for the external keying circuit!!).

| Are you getting reasonable output on the bands where the SWR is OK?  If
| so, then the problem is not the tubes (valves).  Check that the
| bandswitch is indexing properly.  Also, a problem in the output tank
| circuit can cause a high input SWR -- look very carefully at the
| bandswitch contacts to verify that they are not burned and are indexing
| correctly.

I had one of these 30+ years ago in Antarctica ('74 through '76).  Twice 
it fried fixed contacts on the output band switch.  Can't remember which 
two bands it happened on.  The fix was easy.  I had some spare ceramic 
switches with silver plated contacts.  I drilled the rivet out, removed 
the contacts, did the same with the melted contacts on the band switch, 
fitted the replacements, held in place with a fine screw and nut.  No more 
problems.

Gone quiet again on the KPA800/1500 front.  Bought an Acom1000 instead. 
So looks like my next Elecraft project will be a 50MHz transverter.

Regards,

Mike VP8NO