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Re: GFSC AO-40 telemetry server



Alan, NE1H, was kind enough to email me the required "shim" program that
allows you to connect the demod/decoder software the GARC/GSFC server.  It
is called UPDTELEM and the instructions I got from Alan are very simple.

- load up ao40rcv make sure ip is turned on
- load up the "shim" and connect to localhost or 127.0.0.1
- then use p3t to connect to the goddard server if you want to see what you
push.

It seems to work OK except I'm having problems with p3t crashing my system
so I probably won't try to connect to the client side of the GSFC server.
I'm planning to be up about 1000z on Saturday morning and start feeding data
whenever I get it.

If anyone would like a copy of the program, email me and I'll forward it to
you.  It is about a 1.45M zip file.

73s,
Lee-KU4OS

----- Original Message -----
From: "Howard Long" <howard@howardlong.com>
To: "Lee" <lee-fl@cfl.rr.com>
Sent: Thursday, April 26, 2001 3:40 AM
Subject: Re: [amsat-bb] GFSC AO-40 telemetry server


> Lee
>
> Could you share any info you get on this?
>
> Thanks, Howard G6LVB
>
> ----- Original Message -----
> From: "Lee" <lee-fl@cfl.rr.com>
> To: <amsat-bb@AMSAT.Org>
> Sent: Thursday, April 26, 2001 5:01 AM
> Subject: Re: [amsat-bb] GFSC AO-40 telemetry server
>
>
> > Good Evening Ron,
> >
> >  I've been trying to find out how to send data TO the telemetry server
> using
> >  AO40rcv.  A search of old amsat-bb messages turned up your message from
> >  early January.  Are you still providing the UDP converter application?
> Any
> >  help or pointers would be greatly appreciated.  I've got the s-band
> receive
> >  and demod/decode working.  Now I'd like to be able to feed the tlm
server
> > as
> >  well.
> >
> >  Thanks,
> >  Lee-KU4OS
> >
> > > ----- Original Message -----
> > > From: "Ron Parise" <ron.parise@gsfc.nasa.gov>
> > > To: <T5z4@aol.com>; <amsat-bb@AMSAT.Org>
> > > Sent: Wednesday, January 10, 2001 10:56 AM
> > > Subject: Re: [amsat-bb] GFSC AO-40 telemetry server
> > >
> > >
> > > >
> > > > The telemetry server is an application that is running on a Linux
> > > > machine at the GSFC Radio Club (garc9.gsfc.nasa.gov).
> > > > It works as follows:
> > > >
> > > > The server listens on UDP port 2121 for packets containing the
> > > > 8 byte P3T sync vector + the 514 byte AO-40 telemetry block.
> > > > Since UDP is connectionless the server could be receiving packets
> > > > from multiple stations at the same time. These packets are generated
> > > > by running a UDP converter application (available from me) in
> > conjunction
> > > > with P3T, psk400, or IZ8BLY's P3D Decoder running in server mode.
> > > >
> > > > To avoid having clients receive duplicate frames, the server keeps
> > > > a hash table that it can use to identify duplicates and discard
them.
> > > > It also checks for a valid P3T sync vector and CRC.
> > > >
> > > > The server also listens on TCP port 1024 for connections from P3T
> > > > running in client mode. Each time a frame is received, validated,
and
> > > > dupe checked, it is sent out to all of the client connections (I
have
>
> > > > the max connections set to 200 at the moment).
> > > >
> > > > I need to add logging as a first enhancement.
> > > >
> > > > Ron wa4sir
> > > >
> > > >
> > > > At 06:53 AM 01/10/2001 EST, T5z4@aol.com wrote:
> > > > >Just wonder if someone in the know could share with us a brief
> > technical
> > > > >description
> > > > >of the AO-40 telemetry server now setup at Goddard.  Thanks
> > > >
> > > >
> > > > ----
> > > > Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> > > > To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
> > > >
> > >
> >
> > ----
> > Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> > To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
> >
>
>

----
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