[Elecraft] KPA100 and KAT100 remote mounting

[Don Wilhelm]

Mike,

The tiny 15 uHy inductor on the older KIO2 AUX board is marginal in 
current handling capability when both the KPA100 and KAT100 are remote 
mounted.  It will likely work for a while just fine, but I would 
recommend changing it to a higher current inductor.  If you have a spare 
FT43-25 or FT43-37 toroid core around somewhere, wind 12 turns on it and 
install it.

The early KIO2 AUX boards used an inductor that was quite small and the 
tiny RFC body fit nicely into the holes in the board.  Those tiny RFCs 
are the ones which are marginal.  If the body of the RFC that you have 
installed is too large to fit the holes and still lay flat on the board, 
your existing RFC should have adequate current capacity.

Elecraft does not provide it as a part for that purpose, but if you want 
to order one, I would suggest the 15 uHy RF chokes normally used in the 
KPA100 T/R switch - PN E690006.

73,
Don W3FPR

On 9/17/2011 7:48 PM, Mike Weir wrote:
> I have read when you remote mount the KAT100 and KPA100 the KIO2 that is used in the remote unit has to have a larger inductor? Is this still the case, if so what size and does elecraft provide it?
> Mike
> VE3WDM
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