I'm using a very similar setup, except an Icom
746 instead of the 802. Using JVcomm32 it was essentially plug
and play. Of course, you must configure the JVComm for your own parameters, but I bet that you have done that. The slant adjustment in particular can cause the fax to be so distorted as to be unrecognizeable. If you have that adjusted correctly, then... I'd guess that you might simply have a bad sig:noise ratio leading to a bad picture.
Airmail and viewfax will also work here, as Daddle says. I happen to prefer the JVC approach to displaying the charts
, but that's an individual choice.
Keep on trying... it's a good setup.
Jim and Ann s/v Insatiable II lying Southport, Qld, Oz southbound