[Boatanchors] Somewhat OT: 100mw to 100W?

[eugene at hertzmail.com]

Hi there. I sent this to the harris list, but realize that this is a
somewhat generic question that might be better posted here.  The
solution will probably involve tubes so I thought it would be ok to post
here.

I was thinking of seeking a harris rf-1310 exciter to match my 590
receiver. I understand the output is 100mw (or so).  While I do have a
full URT-23 that I hope to connect it to someday, right now that URT is
QRT!  So I was thinking, does anyone have any advice on how to amplify
100mw to around 100W? give or take? 

I guess this would be a little power amp. Is there any way I could avoid
bandswitching/tuning on this little amp? Could I use a single class of
amplifier? I understand many amplifiers use different classes for CW or
SSB or AM.  I am just looking for something relatively simple, but
should allow CW/RTTY/SSB (not sure if this exciter supports AM). Don't
need lots of power so it would be ok to run inefficiently.

Oh by the way. Anyone interested to trade an RF-590H (mine) for an
RF-590A (yours) in good shape?

Thanks
Eugene W2HX