[Elecraft] Deaf KRX3 on one band ...

[Joe Subich, W4TV]

My KRX3 is deaf on 160 meters ... and only on 160.  I had not done
any significant split on 160 since getting it (that one was off-line
for a while until I replaced a heat sensitive VFO B encoder and made the 
updates).

Yes, I've checked the antenna <G> ... it's on same antenna as the
main rx.  On every other band, signal levels are the same in both
receivers (balance is centered when the receivers are tuned to the
same signal) but on 160 there is almost nothing from the sub Rx ...

It does not appear to be related to roofing filters as I've checked
signal levels with both the 2.8 KHz and 400 Hz filters.  I've also
rechecked the receiver gain alignment ... although those should also
effect the higher bands and operation is normal other than 160.

Any suggestions where to start looking - signal levels are normal
on80 meters and higher as well below 1700 KHz (high end of the AM
broadcast band - both receivers have BPF3 installed).

73,

   ... Joe, W4TV