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Strange error message after antenna fell down

 

While I don't think that my antenna follwing down caused this but I did notice it after.
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I am currently running YAAC beta 207(1-feb-2025)on a pi4 using digipi as a sound card and Direwolf version 1.8D that I compiled from source as the TNC.
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I do not know if YAAC is sending out a bad packets or if the local digipeter recently started munging it.
?
I noticed the error message on the Dierwolf output.
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[0L] W2KP-10>APJYC1,WIDE1-1,WIDE2-1:@150447h/=P<[23x1F!<0x00>CSay nice things<0x
0d>
Digipeater W7MOT-4 audio level = 44(9/8) ? ?|||||||__
[0.3] W2KP-10>APJYC1,W7MOT-4*,WIDE2-1:@150447h/=P<[23x1F!<0x00>CSay nice things<
0x0d>
'nul' character found in Information part. ?This should never happen with APRS.
If this is meant to be APRS, W2KP-10 is transmitting with defective software.
Position with time, Farm Vehicle (tractor), KA2DDO YAAC
N 33 34.8213, W 111 54.8922, -2 km/h (-1 MPH), course 0
Say nice things
Digipeater W7ARA-4 audio level = 35(5/5) ? ?_||||____
[0.2] W2KP-10>APJYC1,W7MOT-4,W7ARA-4*,WIDE2:@150447h/=P<[23x1F!<0x00>CSay nice t
hings<0x0d>
'nul' character found in Information part. ?This should never happen with APRS.
If this is meant to be APRS, W2KP-10 is transmitting with defective software.
Position with time, Farm Vehicle (tractor), KA2DDO YAAC
N 33 34.8213, W 111 54.8922, -2 km/h (-1 MPH), course 0
Say nice things
?
?
?
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I realized after hitting send I did not summarize the issue very well.

As you can see in the message Direwolf is reporting a 'nul' character found in the information part.? I am trying to figure out where this is coming from.

Thanks,
Scott


On Thu, Mar 6, 2025 at 8:30?AM Scott Gillins via <scott=[email protected]> wrote:
While I don't think that my antenna follwing down caused this but I did notice it after.
?
I am currently running YAAC beta 207(1-feb-2025)on a pi4 using digipi as a sound card and Direwolf version 1.8D that I compiled from source as the TNC.
?
I do not know if YAAC is sending out a bad packets or if the local digipeter recently started munging it.
?
I noticed the error message on the Dierwolf output.
?
[0L] W2KP-10>APJYC1,WIDE1-1,WIDE2-1:@150447h/=P<[23x1F!<0x00>CSay nice things<0x
0d>
Digipeater W7MOT-4 audio level = 44(9/8) ? ?|||||||__
[0.3] W2KP-10>APJYC1,W7MOT-4*,WIDE2-1:@150447h/=P<[23x1F!<0x00>CSay nice things<
0x0d>
'nul' character found in Information part.? This should never happen with APRS.
If this is meant to be APRS, W2KP-10 is transmitting with defective software.
Position with time, Farm Vehicle (tractor), KA2DDO YAAC
N 33 34.8213, W 111 54.8922, -2 km/h (-1 MPH), course 0
Say nice things
Digipeater W7ARA-4 audio level = 35(5/5) ? ?_||||____
[0.2] W2KP-10>APJYC1,W7MOT-4,W7ARA-4*,WIDE2:@150447h/=P<[23x1F!<0x00>CSay nice t
hings<0x0d>
'nul' character found in Information part.? This should never happen with APRS.
If this is meant to be APRS, W2KP-10 is transmitting with defective software.
Position with time, Farm Vehicle (tractor), KA2DDO YAAC
N 33 34.8213, W 111 54.8922, -2 km/h (-1 MPH), course 0
Say nice things
?
?
?
?
 

That's kind of strange. Could you privately email me your YAAC configuration (export it by File->Configure->Export to File)? It appears that there may be something broken with compressed-mode position reports.

Andrew, KA2DDO
author of YAAC

________________________________________
From: [email protected] <[email protected]> on behalf of Scott Gillins via groups.io <scott@...>
Sent: Thursday, March 6, 2025 10:52 AM
To: [email protected]
Subject: Re: [yaac-users] Strange error message after antenna fell down

I realized after hitting send I did not summarize the issue very well.

As you can see in the message Direwolf is reporting a 'nul' character found in the information part. I am trying to figure out where this is coming from.

Thanks,
Scott


On Thu, Mar 6, 2025 at 8:30?AM Scott Gillins via groups.io<> <scott@...<mailto:[email protected]>> wrote:
While I don't think that my antenna follwing down caused this but I did notice it after.

I am currently running YAAC beta 207(1-feb-2025)on a pi4 using digipi as a sound card and Direwolf version 1.8D that I compiled from source as the TNC.

I do not know if YAAC is sending out a bad packets or if the local digipeter recently started munging it.

I noticed the error message on the Dierwolf output.

[0L] W2KP-10>APJYC1,WIDE1-1,WIDE2-1:@150447h/=P<[23x1F!<0x00>CSay nice things<0x
0d>
Digipeater W7MOT-4 audio level = 44(9/8) |||||||__
[0.3] W2KP-10>APJYC1,W7MOT-4*,WIDE2-1:@150447h/=P<[23x1F!<0x00>CSay nice things<
0x0d>
'nul' character found in Information part. This should never happen with APRS.
If this is meant to be APRS, W2KP-10 is transmitting with defective software.
Position with time, Farm Vehicle (tractor), KA2DDO YAAC
N 33 34.8213, W 111 54.8922, -2 km/h (-1 MPH), course 0
Say nice things
Digipeater W7ARA-4 audio level = 35(5/5) _||||____
[0.2] W2KP-10>APJYC1,W7MOT-4,W7ARA-4*,WIDE2:@150447h/=P<[23x1F!<0x00>CSay nice t
hings<0x0d>
'nul' character found in Information part. This should never happen with APRS.
If this is meant to be APRS, W2KP-10 is transmitting with defective software.
Position with time, Farm Vehicle (tractor), KA2DDO YAAC
N 33 34.8213, W 111 54.8922, -2 km/h (-1 MPH), course 0
Say nice things


[cid:[email protected]]

[cid:[email protected]]

inline.0.part
inline.1.part

 

There is a bug in YAAC in the following combination of settings:
1. The beacon is using COMPRESSED mode encoding and is configured to send station speed.
2. The station has a working GPS connected to it.
3. The beacon is configured to use GPS position (and also velocity) to generate the position, course, and speed information in the beacon packet.
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The bug is in the encoding of speed. Compressed speed is decoded properly, but that doesn't help anyone receiving a munged compressed-mode transmission.
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This will be fixed in the next build of YAAC. Sorry about the inconvenience.
?
Andrew, KA2DDO
author of YAAC

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