[amsat-bb] RS-12/13 telemetry

[RaySoifer <RaySoifer@xxxxxx>]

Hi,

On the 0210 UTC pass over North America today, the RS-12 Mode K transponder 
was operating with 10 dB uplink attenuation and power output of 0.6W.  If 
you're interested in keeping up with the current operating status of 
RS-12/13, here are the telemetry parameters, courtesy of Pat, G3IOR.  No 
fancy computers or software are required for decoding, just your ears, 
Morse code and a pencil :-)

73,

Ray, W2RS

     TABLE 1. RS-12/13 TELEMETRY DATA CONVERSION
===========================================
Here's a data sheet for your RS-12 & 13 Telemetry calculations
and mode findings, with acknowledgments to source Andy Mirinov
RK3KPK of RS3A, the RS Satellite Command Station.
----------------------------------------------------------------------
THE TELEMETRY FROM RS-12 AND 13 IS SENT DOWN AS MORSE CODE CW AT CA. 25WPM.
IT REPRESENT VARIOUS STATUS INDICATORS AND MEASUREMENTS MADE ON THE
TRANSPONDER.

THERE ARE 16 CHANNELS SENT. EACH CHANNEL SENT CONSISTS OF 3 ALPHA CHARACTERS
FOLLOWED BY 2 NUMERIC CHARACTERS, FOR EXAMPLE: 'IMS 45'. THE 'IMS' PART IS
THE ALPHA, '45' THE NUMERIC PART OF ONE CHANNEL. THE ALPHA PART GIVES A
SPECIFIC STATUS SUCH AS ON OR OFF FOR A SPECIFIC FEATURE. IN THE EXAMPLE
'IMS 45', THE IMS PART GIVES THE SPECIFIC STATUS OF CHANNEL 4: THE 21 MHZ
RECEIVER IS OFF. IF, HOWEVER, 'IMS' IS REPLACED BY 'IMU' IN CHANNEL 4, AS
IN 'IMU 45', THEN THE 21 MHZ RECEIVER IS ACTIVATED (ON). THE NUMERIC PART
OF CHANNEL 4, '45' IN OUR EXAMPLE, GIVES THE AGC LEVEL OF THE 15 METER
RECEIVER, WHERE THE VALUE IN VOLTS EQUALS THE NUMBER SENT DIVIDED BY 5.
( N/5 = V, 45/5 = 9 VOLTS).
----------------------------------------------------------------------

CHANNEL  ALPHA-GROUP       MEANING/CONVERSION FORMULA
-------  -----------       --------------------------
1      IIS IID IIR IIG    TELEMETRY SAMPLING PERIOD: 90 MIN.
        IIU IIK IIW IIO    TELEMETRY SAMPLING PERIOD: 10 MIN.
                           N/4= V IN VOLTS OF POWER SUPPLY
----------------------------------------------------------------
2      INS IND INR ING     2 MTR RX: 20 DB ATTENUATOR ON
        INU INK INW INO     2 MTR RX:  0 DB ATTENUATOR ON
                            N/10= P IN WATTS,POWEROUTPUT 2m TX
---------------------------------------------------------------
3      IAS IAD IAR IAG     15 MTR RX: 10 DB ATTENUATOR ON
        IAU IAK IAW IAO     15 MTR RX:  0 DB ATTENUATOR ON
                            N/10= P IN WATTS, POWER OUTPUT 10m TX
----------------------------------------------------------------
4      IMS IMD IMR IMG      15 MTR UPLINK: OFF
        IMU IMK IMW IMO      15 MTR UPLINK: ON
                             N/5= V IN VOLTS, 15 m RX-AGC Volts
----------------------------------------------------------------
5      NIS NID NIR NIG      2 MTR RX: OFF
        NIU NIK NIW NIO      2 MTR RX: ON
                             N/5= V IN VOLTS, 2m RX-AGC VOLTAGE
---------------------------------------------------------------
6      NNS NND NNR NNG      SPECIAL COMMAND STATION CHANNEL: OFF
        NNU NNK NNW NNO      SPECIAL COMMAND STATION CHANNEL: ON
                             N/5= V IN VOLTS, SPECIAL COMMAND AGC V
----------------------------------------------------------------
7      NAS NAD NAR NAG      OUTPUT POWER 10m BEACON NO.1: MAX
        NAU NAK NAW NAO      OUTPUT POWER 10m BEACON NO.1: MIN
                             N/3= (SERVICE COMMAND PARAMETER)
-------  -----------        --------------------------
8      NMS NMD NMR NMG      OUTPUT POWER 10m BEACON NO.2: MAX
        NMU NMK NMW NMO      OUTPUT POWER 10m BEACON MO.2: MIN
                             N/3= (SERVICE COMMAND PARAMETER)
----------------------------------------------------------------
9      AIS AID AIR AIG      STATUS OF FIRST MEMORY BOARD: OFF
        AIU AIK AIW AIO      STATUS OF FIRST MEMORY BOARD: ON
                             N-10= T IN DEGREES C, 10 MTR TX
---------------------------------------------------------------
10     ANS AND ANR ANG      STATUS OF SECOND MEMORY BOARD: OFF
        ANU ANK ANW ANO      STATUS OF SECOND MEMORY BOARD: ON
                             N-10= T IN DEGREES C, 2 MTR TX
---------------------------------------------------------------
11     AAS AAD AAR AAG      THERE IS INFORMATION IN MEMORY NO.1
        AAU AAK AAW AAO      ..... NO INFORMATION IN MEMORY NO.1
                             N-10= T IN DEGREES C,20V POWER SUPPLY
---------------------------------------------------------------
12     AMS AMD AMR AMG      THERE IS INFORMATION IN MEMORY NO. 2
        AMU AMK AMW AMO      ..... NO INFORMATION IN MEMORY NO. 2
                             N-10= T IN DEGREES C, 9V POWER SUPPLY
----------------------------------------------------------------
13     MIS MID MIR MIG      MEMORY DATA SEND VIA BEACON 2
        MIU MIK MIW MIO      MEMORY DATA SEND VIA BEACON 1
                             N/5= V IN VOLTS, 9V PWR SUPPLY CONTROL
----------------------------------------------------------------
14     MNS MND MNR MNG      15 MTR ROBOT RX ATTENUATOR : - 10 DB
        MNU MNK MNW MNO      15 MTR ROBOT RX ATTENUATOR :    0 DB
                             N/5= V IN VOLTS,15m ROBOT RX AGC VOLTAGE
---------------------------------------------------------------
15     MAS MAD MAR MAG      2 MTR ROBOT RX ATTENUATOR : - 10 DB
        MAU MAK MAW MAO      2 MTR ROBOT RX ATTENUATOR :    0 DB
                             N/5= V IN VOLTS, 2m ROBOT RX AGC VOLTAGE
---------------------------------------------------------------
16     MMS MMD MMR MMG      OUTPUT PWR SPECIAL CMD CHANNEL : MAX
        MMU MMK MMW MMO      OUTPUT PWR SPECIAL CMD CHANNEL : MIN
                             N=00: LESS THAN 32 QSO'S IN ROBOT LOG
                             N=80 TO 99: OVER 32 QSO'S IN ROBOT 
LOG



73,

Pat, G3IOR @ GB7LDI



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