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Re: PMS usage suggestions?




Having watched the MIR Space Station BBS activity from the initial
installation to the current date ISS activity, it is not reasonable to
expect that everybody will follow rules. Human nature tells us rules
are simple obstacles to be broken. The reality is the behavior will
not change unless the PBBS is disabled and connect requests are
disabled. When a user learns their action does not invoke a
response, they will eventually stop the action when they learn it does
nothing for them.

Many times the connect action from a station on the ground is simply
an innocent action. The only way to solve these issues is to use some
collective knowledge based on activities and behaviors that have been
observed in the past. We have a vast inventory of history and knowledge
base from past operations...

Disabling the PBBS and rejecting all connect requests from ground
based activity are settings that can be programmed into the TNC. Since
there is no computer connected to the TNC, it is not possible to change
these settings unless the TNC has remote management capabilities. With
remote management capabilities, selected ground based stations can
manage those settings independently of a computer connected to the
TNC.

Does the TNC on ISS have remote management capabilities?

If not, we have to wait until a computer is connected to the system,
before expecting any change unless it is deactivated.

Conventional connected packet is not a rational method of operation
given the history of past activity. It is somewhat limiting to stations
with
low effective radiated power. In order to maximize the use of the system
with the 1200 baud limitation, it makes sense to utilize the equipment
in the unconnected packet type of operation. This could also help
improve the odds of lower power stations being successful in passing
messages.

If and when a computer is connected to the TNC on the ISS, any
APRS software package can be used for the crew to collect and
send messages as they orbit the Earth. With a number of
strategically located ground based Internet Gateway stations, I
would estimate that coverage would be good in instances where
line of site communications are not available for any particular
station. This Web of stations could provide worldwide coverage for
most applications via the Internet to establish an effective
communications system that can be utilized beyond the line of sight.
The Web of APRS Internet Gateway stations help extend the
communications link beyond the line of site. Some of that network
infrastructure is already in place today.

The question I should have asked before rambling is what is the
goal of the Amateur Radio equipment onboard the ISS and what
service is it intended to provide?  Perhaps, I am out of line in my
comments without asking this intuitively obvious question.



73's,

Tim - N8DEU
Huntsville, Alabama

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