233Re: New guy questions
- May 11, 2003Thanks, Tomi!
I experimented with FlexNet and 300 baud HF packet five years or so
ago. As you would expect, FlexNet was too aggressive, not backing off
on MAXFRAME and PACLEN enough for reliable HF packet.
The FlexNet system would be great for 300 baud packet, but I think it
would involve rewriting the FlexNet kernal. I'm not sure you could do
it with just a driver.
I uploaded a jpeg of a VHF multicast network here, in the PICTURES
section.... I'd like to try something like that, but on a larger, HF
It seems to me that multicast and Newqpsk were made for each other,
addressing each other's drawbacks quite well. I'll see what I can do
with it, and keep the group posted.
The multicast software I have expects a KISS TNC, which means I'll
have to use FlexNet's KISS driver in order for it to talk to FlexNet,
which means that most of FlexNet's control over the link will be
eliminated. It is my hope that this will allow me to digi the
multicasts through Flex32 to Newqpsk without too much interference
from the Flex32 kernal.
The multicast software will have to be modified to include a digi
field in the multicast packet header. If Flex32 has a 256 PACLEN
limit, the multicast software will have to be modified for the
smaller PACLEN and lose some efficiency. I'll avoid that if at all
That's the theory I'm working on, anyway. It may be that I am overly
optimistic, but I suppose that is better than the alternative!
There is an article about VHF multicast in the "Library" section at
the web address below, and a tutorial on the RadioMirror multicast
software in the "Tutorials" section.
There's a new tutorial on Flex32 with the soundmodem in there too.
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