[PCR-1000] digital modes?

[Robert Crawford]

First of all, you wouldn't believe what a difference in removing a monitor
(video cable) extension cable did for removing noise!  LOL  Took me a while
to trace down, but the end result was very rewarding.  It's bad when you
have to minimize everything on the desktop just to get rid of the noise it
was creating on cetain portions of the HF band.  ; )

1) Is there a website that gives audio examples of what the different
digital modes on the HF band sound like? ( rtty, amtor, fsk, fax, etc...)
I'm hearing a ton of signals, but am not familiar with knowing what is what.

2) What is the best freeware (or shareware) program that covers several
different modes?

Thanks,
Robert - n0kxu