[aprssig] APRS Telemetry

Robert Bruninga bruninga at usna.edu
Wed Sep 6 09:33:34 CDT 2006

I'm considering a new Symbol for APRS to represent alternative
 systems, so that owners can monitor their off-grid power
systems in
 a standard way remotely.  Also, then we can make summaries of
 users contributions to alternative energy.  Here are some of
 ideas I am considering:

1) Alternative energy symbol (with overlay for Wind, Thermal,
Water or Sun)
2) Standard telemetry formats using the existing KPC-3+ five
channel packets
3) TOCALL version numbers to match the formats so that parsers
can display
   end units wihtout any other info.

For this purpose, I would like to build a table of all existing
KPC-3+ telemetry 5-channel systems so we can see if some
standards exist.  
Here are 3 that might be useful for alternative energy systems:

1) System Volts,  Charge Current,  Load Current,  Panel
Temperature, Indoor temp
2) System Volts,  Charge Current,  Load Current,  Battery
Current,  Temp
3) System A volts,  System A current,  System B volts,  System B
current, Temp

Each of these would have a different APExxx version number, so
that decoding
Systems can decode and display them without any other

Anyone that is running off-grid or with alternative energy
systems of any
Kind, I would like to hear from you as well, even if you are not
using a
KPC-3+ for telemetry...


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