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@lists.tapr.org [mailto:aprssig-bounces@lists.tapr.org] On Behalf Of Francisco Rogerio Fontenele Aragão Sent: Wednesday, February 13, 2008 5:50 PM To: aprssig@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@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