Problem with telemetry

[SP9HSQ]

Hello!

I have a little problem with telemetry of my DIGI SP9HSQ-3 on www.aprs.fi.

If my EQNS packet goes by two ways:

 

2013-09-15 13:52:02 CEST: SP9HSQ-3>APND12,qAR,SQ9MCS-1::SP9HSQ-3 :EQNS.0,0.1,0,0,0.5,-40,0,0.5,-40,0,0.5,-40,0,0.5,-40
2013-09-15 13:52:03 CEST: SP9HSQ-3>APND12,qAR,SQ9MCS-1::SP9HSQ-3 :BITS.11111111,DIGI_NED Telemetry
2013-09-15 13:52:08 CEST: SP9HSQ-3>APND12,SR9NWC*,qAR,SR9NON::SP9HSQ-3 :EQNS.0,0.1,0,0,0.5,-40,0,0.5,-40,0,0.5,-40,0,0.5,-40

 

on telemetry page the last number is lost:

 

Battery: 13.600 V (TLM: 136 EQN: 0,0.1,0)
Bat: 34 C (TLM: 148 EQN: 0,0.5,-40)
Trx: 36 C (TLM: 152 EQN: 0,0.5,-40)
In: 35 C (TLM: 150 EQN: 0,0.5,-40)
Out: 64 C (TLM: 128 EQN: 0,0.5,0)   <- !!!!

 

and OutSide temperature is foulty.

If the EQNS packet goes by one station, all is right.

Could You help me?

 

All the Best

Mariusz SP9HSQ

[Lynn W Deffenbaugh (Mr)]

If you look at the hex decode of the packet gated by SHRNON, you'll see that it's adding a trailing space (that hex 20 at the end):

2013-09-15 23:52:06 EDT SP9HSQ-3: 99 bytes
0x00 S P 9 H S Q - 3 > A P N D 1 2 , S R 9 N W C * , q A R , S R 9 N 
     5350394853512d333e41504e4431322c5352394e57432a2c7141522c5352394e
0x20 O N : : S P 9 H S Q - 3   : E Q N S . 0 , 0 . 1 , 0 , 0 , 0 . 5 
     4f4e3a3a5350394853512d33203a45514e532e302c302e312c302c302c302e35
0x40 , - 4 0 , 0 , 0 . 5 , - 4 0 , 0 , 0 . 5 , - 4 0 , 0 , 0 . 5 , - 
     2c2d34302c302c302e352c2d34302c302c302e352c2d34302c302c302e352c2d
0x60 4 0   
     343020

Hessu may need to update his EQNS parser to allow for this not uncommon addition by some faulty IGates.

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

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[Heikki Hannikainen]

On Sun, Sep 15, 2013 at 5:03 PM, SP9HSQ <sp9...@wp.pl> wrote:
> Hello!
> I have a little problem with telemetry of my DIGI SP9HSQ-3 on www.aprs.fi.
> If my EQNS packet goes by two ways:
>
> 2013-09-15 13:52:02 CEST: SP9HSQ-3>APND12,qAR,SQ9MCS-1::SP9HSQ-3
> :EQNS.0,0.1,0,0,0.5,-40,0,0.5,-40,0,0.5,-40,0,0.5,-40
> 2013-09-15 13:52:03 CEST: SP9HSQ-3>APND12,qAR,SQ9MCS-1::SP9HSQ-3
> :BITS.11111111,DIGI_NED Telemetry
> 2013-09-15 13:52:08 CEST: SP9HSQ-3>APND12,SR9NWC*,qAR,SR9NON::SP9HSQ-3
> :EQNS.0,0.1,0,0,0.5,-40,0,0.5,-40,0,0.5,-40,0,0.5,-40
>
> on telemetry page the last number is lost:
>
> Battery: 13.600 V (TLM: 136 EQN: 0,0.1,0)
> Bat: 34 C (TLM: 148 EQN: 0,0.5,-40)
> Trx: 36 C (TLM: 152 EQN: 0,0.5,-40)
> In: 35 C (TLM: 150 EQN: 0,0.5,-40)
> Out: 64 C (TLM: 128 EQN: 0,0.5,0) <- !!!!
>
> and OutSide temperature is foulty.

I took a look at the raw packets in hex mode
(http://aprs.fi/?c=raw&call=SP9HSQ-3&limit=5&view=hex - there's a
switch for hex / decoded mode at the top), and it seems like there's
an extra space (' ', 0x20 hex) after the telemetry EQNS packet text
(and after some other packets too). It's not very visible in the
normal view, of course.

Seems like aprs.fi ignores the last numeric value of the EQNS packet,
since it has a non-digit in the end. I'll add a line of code to strip
spaces from the end before evaluating EQNS, for the next aprs.fi
version.

In the mean time, you could investigate why the extra space is there,
and if one of the digipeaters/igates there is removing or adding it
for you - the packet which went via SQ9MCS-1 does not have a space,
the packet which went via SR9NWC*,qAR,SR9NON has a space. Digipeaters
and igates should not add or remove spaces from the end.

- Hessu

[SP9HSQ]

My friends!

 

I checked DIGI_NED telemetry file - it is without errors (no additional $20 byte).

I suppose that SR9NON is adding it. I spoke with the I-gate owner and it will be checking.

Many thanks for Your interest.

 

Best Regards

Mariusz SP9HSQ