Okay so IP multicast it is? Keep in mind that most public (Internet)
routers deliberately block multicast so you'll probably need to
encapsulate it in something first like and IP-IP tunnel to each of your
transmitter sites.

What is even stranger is that I was involved in a VHF pager project that
needed simultaneous broadcast around an entire state via a low bw
satellite delivery system. I think they also ended up using multicast.

If you want to stay away from multicast, I would suspect that if you
stuck with TCP in the internet portion, then wrote a simple inetd
handler (at the proxy where the transmitter was) to process the data
stream, that would be simplests. Your handler could then so whatever it
likes with data, making it RDFT, save to file and spawn some other
process or whatever. This is the same basic method by which terminal
servers work, encoding something like an RS232 stream inside a TCP
transport then extracting it back to RS232 at the other end again.

It may even be worthwhile setting up a SSH linke to each of your TX
sites, then passing whatever you like over the connection. Good for
security.

Enough waffle from me!

Cheers Bob

psyshrike wrote:

Awesome information!