I assembled automatic amp stand-by switching box before the 
contest and it worked well in the test circumustance. However 
it did not work at all when I set up 6amps and band decoders etc.
So I modified SixPak manual switch box into Amp Stand-by Switching 
Box. When I change band, antennas and amps were all set automatically 
however I had to switch the amp stand-by manually.
This confused me quite often especially after 91Beta was died, 
I had to use JRL2000FH for 160/15m.