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Old November 5th 03, 10:42 AM
charlesb
 
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Best protocol for scraping up a bit more throughput at 9.6kb? That would be
RadioMirror, the terrestrial multicast protocol.

At 1.2kb, RadioMirror can move better than 20 MB of data a day. At 9.6kb,
you would do much better than that, of course.

Neither AX25 or TCPIP packet can keep up with RadioMirrors' throughput.
Additionally, RadioMirror is an unconnected mode, so you can distribute the
data to an unlimited number of receiving stations, or just one. That's up to
you.

To investigate RadioMirror, see the "Tutorial" section at USPN:
http://www.uspacket.net and also read the article "Emergency Digital
Communications - Another Angle" in USPN's "Library" section.

These articles represent the single most comprehensive source of information
on setting up and operating this advanced digital mode.

RadioMirror may or may not be right for your application, but it is hoped
that you will enjoy reading about it, in any case. I have tested RadioMirror
at 1.2kb and was astounded at it's ability to move a lot of data quickly.

Good luck!

Charles Brabham, N5PVL
Director: USPacket.Net
http://www.uspacket.net




"Andy Knitt" wrote in message
...
Hello Everyone,

I'm very new to packet radio/digital communications and am trying to climb
up the learning curve too fast. It hurts :-) My question is: What
protocol/mode will give me the best data throughput using 9600 baud packet
on VHF or UHF? Using standard AX.25 protocol in connected mode I'm able

to
achieve about 1000 baud throughput. Unconnected I can get about 4000

baud,
but of course that is without any error checking or correction. I'd like

to
get maximum data transfer between two stations...network operations are
secondary. I'm guessing using KISS mode would allow me to get better
throughput because of the lack of AX.25 overhead, but I'm pretty clueless

on
how to actually do anything with KISS mode. How do I implement something
like TCP/IP over radio? Is that any better than AX.25? Less overhead?
I've downloaded JNOS, but I'm not sure what exactly it is or what to do

with
it. Any suggestions or help would be appreciated. I've searched the web
for info on running different protocols in KISS mode, but everything I

find
seems like it was written for computer scientists in the 1980s.

Thanks!

Andy KB9JOZ