[amsat-bb] PSAT Pass

Nicholas Mahr nicholasmahr1 at gmail.com
Mon Jun 8 13:31:44 UTC 2015


Forgot to add in and to correct some errors, the above telemetry decoding
format is for the PSK31 tlm only. But you can download a PSAT tlm decoder
off of DK3WN to decode both the aprs and psk31 telemetry.
73 KE8AKW

On Mon, Jun 8, 2015 at 9:09 AM, Nicholas Mahr <nicholasmahr1 at gmail.com>
wrote:

> 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
>


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