[sdiy] Transformer question ( skin effect )

[Barry Klein]

Hmmm... 
Some things I wonder about without checking into it...
Your problem is only a Transmit mode problem - you don't
need the boost during receive as it is a much lower power mode.
So noise developed for the boost is only during TX and probably
not much is sensitive to it then. 
You may just be able to utilize a large capacitance bank and
large guage wiring to get the boost you want compared to what
you are starting with.  Maybe look into cap banks used for these
outrageously loud car stereos.  All those design and implementation
techniques would apply to your problem/goal.  Pulling power out
of the bank may give you a lower source impedance source and
be a big help vs just a battery source.
Lastly, why in the heck do you need more than the ~100W a 
typical XCVR has?  Are you bringing a linear out with you to
the beach??  Maybe just work on making a better antenna?

Barry