Sound card? So now you are relying on Windows? Oh man!

J/K. I'm a ham. I think it's important to realize that in certain
situations, some of your equipment that you rely on, might not be
available. Knowing how to use alternatives is definitely an advantage.


With regards to RDF, you can triangulate, using a compass and accurate
measures of distance in the water. We used to foxhunt unwanted 2 meter
signals this way.

Also, with your RTM, you'd have more luck finding people with FSK or CW
experience out there, than any rare radio mode.

Cheers