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[aprssig] More than one PCSAT?

Francisco Rogerio Fontenele Aragão frfaragao at gmail.com
Fri Feb 15 23:27:07 UTC 2008


Bob

It seems my question was not understood. How I have showed, PCSAT was over
South America. At those time Findu was showing packet of PCSAT-11 being
digipeated by KC8OBZ-2. Since KC8OBZ-2 is supposed be in USA and impossible
to receive a beacon from PCSAT-1 when she is over SA, I see this
possibilities:
a) There would be another station with callsign PCSAT-11
b) The packet sent by PCSAT-11 when she was over USA was received by Findu
via KC8OBZ-2 only 10 to 15 minutes after the pass.

I want only learn how this event work. Thanks for your answer.

73, Francisco
PT2TD

=======================================================================
2008/2/14, Robert Bruninga <bruninga at usna.edu>:
>
> > More than one PCSAT?
>
> Yes, PCSAT contains two identical redundant transponders.  The
> W3ADO-1 side has uplink and downlink on 145.825.  Side B
> (PCSAT-11) has secret uplink, but a downlink on 144.39 over
> North America (the continent wide APRS channel).  The secret
> uplink is available for special applications if anyone can think
> of one.
>
> If you see both downlinks on 145.825, then it means the CPU has
> crashed an has cross connected the transmitters for
> "redundancy".  We must send the command to isolate the two sides
> or we are wasting DOUBLE power each time it transmits on either
> side.
>
> Actually, PCSAT has a total of FOUR callsigns and FOUR uplink
> receivers. And FOUR transponders, but the two UHF uplinks at
> 9600 baud are kept turned off to save power.  In fact it is the
> default ON of these extra two 9600 baud systems that cause PCSAT
> to be power negative and therefore only be useable twice a year
> in Full sun.  We wont make that mistake again...
>
> Bob, WB4APR
>
>
> > -----Original Message-----
> > From: aprssig-bounces at lists.tapr.org
> > [mailto:aprssig-bounces at lists.tapr.org] On Behalf Of
> > Francisco Rogerio Fontenele Aragão
> > Sent: Wednesday, February 13, 2008 5:50 PM
> > To: aprssig at lists.tapr.org
> > Subject: [aprssig] More than one PCSAT?
> >
> > Today PCSAT had a pass over Brasilia from 2207 UTC to 2223
> > UTC but Findu showed the following log during the pass:
> >
> >
> > 20080213222151 :
> > LW5DGM]CQ,W3ADO-1*,qAo,LW4DEM-4:=3801.42S/05734.03W`73' Via
> > Satelite {UISS50}
> > 20080213222107 :
> > W3ADO-1]BEACON,SGATE,qAo,LW4DEM-4:T#128,155,156,065,208,214,00
> > 111111,0011,1
> > 20080213222022 : LW5DGM]CQ,W3ADO-1*,qAo,LW4DEM-4::EMAIL
> > :peludobueno at yahoo.com.ar
> > 20080213221938 : LW5DGM]CQ,W3ADO-1*,qAo,LW4DEM-4::LW4DEM
> > :Hola Jorge Saludos.....
> > 20080213221908 : W3ADO-1]APRS4,qAo,LW4DEM-4:Default LT4
> > 20080213221907 :
> > W3ADO-1]BEACON,SGATE,qAo,LW4DEM-4:T#126,132,140,143,134,214,00
> > 111111,0001,1
> > 20080213221900 :
> > N9FLX]APRX46,N9AMN-2*,WIDE3-2,qAo,WB9TLH-12:;PCSAT-11
> > *131309z0000.00N/00000.00W/
> > 20080213221847 : W3ADO-1]APRS3,qAo,LW4DEM-4:Default LT3
> > 20080213221742 : N9FLX]APRX46,TCPIP*,qAO,WB8NUT:;PCSAT-11
> > *131309z0000.00N/00000.00W/
> > 20080213221734 :
> > LW5DGM]CQ,W3ADO-1*,qAo,LW4DEM-4::BLNQSL1/1:W3ADO-1{UISS50}
> > 20080213221707 :
> > W3ADO-1]BEACON,SGATE,qAo,LW4DEM-4:T#124,156,157,073,209,214,00
> > 111111,0011,1
> > 20080213221704 :
> > LW5DGM]CQ,W3ADO-1*,qAo,LW4DEM-4:=3801.42S/05734.03W`73' Via
> > Satelite {UISS50}
> > 20080213221413 :
> > PCSAT-11]BEACON,SGATE,qAR,KC8OBZ-2:T#587,135,134,096,128,214,0
> > 0111111,1110,1
> > 20080213221113 :
> > N9FLX]APRX46,N9AMN-2*,WIDE3-2,qAo,WB9TLH-12:;PCSAT-11
> > *131309z0000.00N/00000.00W/
> > 20080213221111 :
> > PCSAT-11]BEACON,SGATE,qAR,KC8OBZ-2:T#586,137,139,138,123,214,0
> > 0111111,1101,1
> > 20080213220946 :
> > PCSAT-11]BEACON,SGATE,qAo,9Z4GFB-7:T#594,137,139,138,123,214,0
> > 0111111,1101,1
> > 20080213220855 :
> > PCSAT-11]BEACON,SGATE,qAR,KC8OBZ-2:T#585,142,052,095,063,214,0
> > 0111111,1100,1
> > 20080213220840 : PCSAT-11]APRS4,qAR,KC8OBZ-2::BLN4PCSAT:In
> > View now. QSY 145.825 for QSO.
> > 20080213220758 : PCSAT-11]BEACON,SGATE,qAo,WP4YF:]131456z
> reset wb4apr
> >
> > How can one understand the beacons of  PCSAT-11  digipeated
> > by KC8OBZ-2 station? How about the beacons of N9FLX?
> >
> > 73, Francisco
> > PT2TD
> > Loc GH64bf  (Lat 15.76020 S, Lon 47.83656 W)
> > --
> > Francisco Rogerio F. Aragão
> >
> >
>
>
>
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>



-- 
Francisco Rogerio F. Aragão
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