[Amps] AL572 for DXpedition, parts to take along

[TexasRF at aol.com]

Fuses, more fuses.
 
73,
Gerald K5GW
 
 
 
In a message dated 4/16/2014 2:12:23 P.M. Pacific Daylight Time,  
jeff at N6GQ.com writes:

Hi  all...

I'm prepping for a trip to Africa and plan to take an AL572  (cheap,
light, dispensable, plentiful, and does about 1200w out). While  I
realize there are better amp choices in terms of durability, etc.  this
is the one I've chosen with the above factors in mind. It is going  to
be the primary amp in an SO2R setup, and if it fails, I still have  a
secondary pretty solid (Acom) amp I can put into primary. I'll  also
have the QSK board installed. Over a week I'd expect to put about  150
hard hours on the amp.

So, if you were taking the AL572 with you  to a place where parts are
non-existent, and wanted to have a chance of  keeping the amp online in
100+F heat in a rugged duty cycle (fast CW, fast  SSB) what would you
take? My plan is the following:

- spare set of  tubes
- plate choke
- a couple spare HV caps for the PS

Are there  other things that would be smart to take along? I'm thinking
along the  lines of what's reasonable to both take along, and field
repair with - and  while a spare set of tubes is marginal in that
sense, it seems to me that  at least with 572Bs it might not be a bad
idea. Also any areas of the AL572  that are inherently weak?

Anything else? I'd also be interested in  hearing about any other mods
folks would suggest to strengthen the amp for  the long haul (I've seen
the W8JI mods).

Thanks,

Jeff  N6GQ
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