[amsat-bb] PSAT Pass

[Nicholas Mahr]

Hello all,
I tryed out the pass on APRS about 12:50 UTC today. Very very strong
satellite 57! Could not digepeat a packet for some reason. I think i was a
little confused about the paths, what are the paths for to and via? Im
using UISS. Got many frames of Telemetry this pass as well! Also bob you
should at PSAT to oscar.dcarr for recepetion reports. I noticed very few
people got digpeated... Also bob the frames that have all the numbers in
them, what do they mean, are the just noisy tlm frames? Also for all the
people out that wanted to know what their frame of telemetry means here you
go:

PSAT Beacon specification:

CALL beacon MODE NOF DET AGC VC IC TMP

Where:
CALLidentification of the beacon (callsign)beaconkeyword indicating
beginning of dataMODEA or B (A – transmitter always on, B – transmitter
turns on, if BPSK31 signal is present)NOFnumber of frame (0 … 999)DETpercentage
of BPSK31 detection (0 … 99%)AGCpercentage of AGC operation (0 … 99%)VCsupply
voltage (10 mVolts)ICpower amplifier current (mAmps)TMPtemperature of PA
transistor (deg C)

The AGC measured voltage is highly nonlinearly dependent on the input
signal, morover the limiting values of measurement vary with temperature of
the chip and its supply voltage. Indicative only conversion equation was
computed as from 50Ohm generator to input of receiver Pin = 0.472xAGC-113.5
[dBm, %]

Example:

W3ADO-5 beacon B 044 03 24 540 198 +28

It means mode B active, frame number 044, BPSK31 03 %, AGC acting 24%,
supply voltage 5.40V, PA current 198mA ant temperature of the PA transistor
of +28°C.
Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=52 >[08:47:54]
s#018259,0z200,jkIjkHjkGjkFikFikDikAhkahkbgkbgkcgkd

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=34 >[08:48:03]
T#651,842,074,130,132,415,00000000

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=52 >[08:49:26]
s#018260,0z200,dkdckebkeake0kf0kf0kf0kf0kf0jf0kg0kf

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=52 >[08:50:56]
s#018261,0z200,bkgbjgcjfgjfhjghjfhjfhifhifiifiifiif

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=34 >[08:51:06]
T#654,856,071,131,131,415,00000000

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=34 >[08:53:08]
T#656,855,071,131,130,415,00000000

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=34 >[08:54:09]
T#657,872,079,131,130,416,00000000

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=52 >[08:55:28]
s#018264,0z200,D0hD0hDAhDAgDBgCBgCCgCCgCCgCDgCDgBDg

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=52 >[08:57:00]
s#018265,0z200,BDgBDfBEfBEfBEfBEfBEfBEeBFeBFeCFeCFe

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=34 >[08:57:12]
T#660,865,092,131,129,415,00000000

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=34 >[08:58:12]
T#661,881,078,131,129,415,00000000

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=52 >[08:58:37]
s#018266,0z200,DFfDFfDGeEGfEGfEGfEGfFGfEFfFFeEFeFFe

Fm PSAT To APRSON Via ARISS <UI pid=F0 Len=34 >[08:59:13]
T#662,841,368,130,129,415,00000000