On 5/14/2010 4:50 PM, sholtofish wrote:
Tony, It would be interesting to experiment with packet over nvis
paths too. The higher signal to noise ratio typical with nvis would
really speed throughput. Maybe you could devise a simulation
It would be interesting Sholto. In addition to high signal-to-noise
ratios, NVIS propagation appears to be relatively stable. The path
simulator indicated that the mode is especially sensitive to channel
distortion so I would expect throughput issues if the ionosphere became
somewhat agitated, regardless of how strong the signals where.
PathSim's NVIS simulation tries to emulate a situation where ground
waves interfere with NVIS sky waves. The delay between the two signals
can destroy throughput so this is something to consider if the other guy
is close enough to hear via ground wave.
Another idea which keeps nagging at me is using SCS's Robust Packet
with their fairly cheap kiss Tracker TNC. Robust packet looks like it
either works at 200 or 600 baud with a fairly narrow bandwidth.
Only one way to find out Sholto - I'll take a look at the price.
Tony -K2MO
--- In [email protected]
<mailto:digitalradio%40yahoogroups.com>, Tony <d...@...> wrote:
>
> Patrick,
>
> Sholto is the one who "twisted" my arm to revisit HF Packet. Net 105 is
> a remarkable network and one can only imagine how many messages have
> been processed since the 1980s'; all on a shared channel with a
> relatively narrow mode.
>
> I've used the network to connect to Sholto when there is no propagation
> between us. I can log into his packet mailbox and leave him a message
> thanks to magic of digipeating.
>
> Your program does a wonderful job on HF packet.
>
> Tony -K2MO
>
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