The main thing is to be able to tune lsb 1.9 khz below the assignrd
frequency for hffax in lsb (or variable bfo)

Good point. That may prevent use of the standard marine ssb unit that I
suggested. I don't know, though, what has hit the market in the past 12 years
since I worked on the stuff.

My DX-392 does a fine job of receiving WEFAX.

Bill, K5BY