Satellites information update by JE9PEL

The 20 channels of ANDE telemetry are multiplexed into 4 sequential
frames.  Each frame consists of 5 analog channels, and 8 status 
bits which include the two FRAME counter bits.  It takes 4 frames 
to constitute the complete telemetry picture of ANDE.  Frame Format:

ANDE>APRTLM,SGATE:T#SSS,111,222,333,444,555,FF111111

Where the header is ANDE>APRTLM,SGATE: (These fields may vary)
Within the actual data portion of the packet are these fields:

  SSS      is the serial number 
  111      is the first channel telemetry
  222      is the second channel
  333      is the third channel
  444      is the forth channel
  555      is the fifth channel
  FF111111 the 8 internal bits (including the FRAME counter)
 
FF  CHANNEL 1   CHANNEL 2  CHANNEL 3  CHANNEL 4  CHANNEL 5
--  ----------- ---------- ---------- ---------- ----------
11  BUS-Volts   SOLAR-X    SOLAR-Y    SOLAR-Z    5V BUS
10  Temp-BAT    Temp-SOL-X Temp-SOL-Y Temp-SOL-Z Temp-Retro
01  Laser-Volts A1-Amps    A2-Amps    B1-Amps    B2-Amps
00  Temp-Bat-B  Clock      Temp-Laser Time-to-Go On-Time

Telemetry equations are generally of the form y = aX + b 
where X is the 3 byte decimal telemetry count in each channel
in the data. Temperature is a cubic y=aX^3 + bX^2 + cX - d.

 Define Function for Temperature:
   Tof(V) = .00001 * X ^ 3 - .0039 * X ^ 2 + .829 * X - 40.4
   
   IF Frame is "00" THEN
      Temp-Bat-B  = TempOf(X1)
      Clock       = X2 * 1
      Temp-Laser  = TempOf(X3)
      Time-to-Go  = X4 * 1
      On-Time     = X5 * 1
      
   IF Frame is "01" THEN
      Laser Volts = X1 * 0.1
      A1-Amps     = X2 * 1.7 - 4
      A2-Amps     = X3 * 1.7 - 4
      B1-Amps     = X4 * 1.7 - 4
      B2-Amps     = X5 * 1.7 - 4
      
   IF Frame is "10" THEN
      Temp-Bat-A  = TempOf(X1)
      Temp-SOL-X  = TempOf(X2)
      Temp-SOL-Y  = TempOf(X3)
      Temp-SOL-Z  = TempOf(X4)
      Temp-Retro  = TempOf(X5)
      
   IF Frame is "11" THEN
      BUS-volts   = X1 * 0.1
      SOL-X       = X2 * -.0196 + 1
      SOL-Y       = X3 * -.0196 + 1
      SOL-Z       = X4 * -.0196 + 1
      5-volt-ref  = X5 * .0235

RAFT1>APRS,SGATE:T#nnn,CH1,CH2,CH3,CH4,CH5,xxxxxxxx 

RAFT1        AX.25 callsign of RAFT1 
APRS         AX.25 generic TOCALL 
SGATE        digipeater address for Internet Gateways 
T#nnn        a 3 decimal digit serial number 
CH1 to CH5   5 telemetry channels (3 digit decimal) 
xxxxxxxx     an 8 byte (8 bit binary) number showing the state of
             the output bits 

The telemetry channels will be presented in standard format
as shown below: 

FRAME 00:    CH1 - Battery Voltage
             CH2 - Temperature 
             CH3 - X arrays solar current 
             CH4 - Y arrays solar current 
             CH5 - Z arrays Solar current