Yes Jack, you're right... obviously some kind of encoding is required. I
guess you could invent you own, maybe using fsk, but tcp/ip is there and
it works. I think he may be saying he wants to avoid an internet
connection. I had excellent results using ISDN... high quality audio,
low latency, two isolated channels, one for data and one for audio...
total security with passwords for connection on both channels, etc. It's
widely available in my area, and not too expensive (cheaper than DSL or
cable at both ends).
Technically you could use a modem without tcp/ip, but then you only have
control of one serial port... whereas the serial servers allow control
of virtually an unlimited number of serial ports.
TRX-Manager also offers an excellent way of running remote control using
a built-in telnet server, but it requires TRX-Manager to be running on
computers at both ends which complicates things a lot. It has a number
of nice features though.
Larry N8LP
Jack Brindle wrote:
The only way to avoid TCP/IP would be to set up a dedicated twisted
pair between your place and the remote location. This is a very
expensive solution, and I'd bet you really don't want to spring for
it. The reason that you really need to use TCP/IP is that it is the
only protocol suite that is commonly passed among the internet.
Pretty much all other protocols are blocked.
The only alternative realistically would be to set up at least one
phone line at the radio site to carry the control and data
information to and from the radio. The device would have to answer
the phone, connect to the radio and start controlling things. There
would need to be a separate path for the voice or CW data so that rig
controls data would not interfere with it - thus you would really
need two lines. Of course, this could also be a phone line which
carries DSL. One function of the box would be to make sure that only
you can operate the rig, and that the rig does NOT transmit when you
are not controlling it live.
Somehow I suspect that the other TCP/IP networked solutions might
actually provide what you need. There are some pretty cool ones as
you are now learning...
On Oct 11, 2004, at 5:56 AM, John Huffman wrote:
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