TNC2 Data Format

[Max Harper]

Is the TNC2 format just plain text, or is some of the data outside the normal ascii text range? I'm trying to get weather data into APRX but it doesn't support weather stations directly. So I'm thinking about programing a Pic chip to take my weather data and send it to APRX as if it was being received by a tnc. Problem is I can't find the TNC2 data format.
 
Thanks, Max KG4PID

[Scott Miller]

Yes, it's just text. I'm not sure that it's documented anywhere - when
I wrote that code for the OpenTracker series I just took a TNC2 clone
and a KPC-3 off the shelf and examined what they put out.

For your purposes, it should be enough to do
SOURCE>DESTINATION,PATH:PACKET. I'd expect any APRS application to
parse that correctly.

Scott
N1VG

Post by Max Harper
Is the TNC2 format just plain text, or is some of the data outside the
normal ascii text range? I'm trying to get weather data into APRX but it
doesn't support weather stations directly. So I'm thinking about
programing a Pic chip to take my weather data and send it to APRX as if
it was being received by a tnc. Problem is I can't find the TNC2 data
format.
Thanks, Max KG4PID
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https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig

[Steve Noskowicz]

If there happens to be any diferences, perhaps G8BPQ has seen them:

http://www.cantab.net/users/john.wiseman/Documents/BPQ%20TNC2%20Emulator.htm


73, Steve, K9DCI

Yes, it's just text.  I'm not
sure that it's documented anywhere - when I wrote that code
for the OpenTracker series I just took a TNC2 clone and a
KPC-3 off the shelf and examined what they put out.
For your purposes, it should be enough to do
SOURCE>DESTINATION,PATH:PACKET.  I'd expect any APRS
application to parse that correctly.
Scott
N1VG

Post by Max Harper
Is the TNC2 format just plain text, or is some of the

data outside the

Post by Max Harper
normal ascii text range? I'm trying to get weather data

into APRX but it

Post by Max Harper
doesn't support weather stations directly. So I'm

thinking about

Post by Max Harper
programing a Pic chip to take my weather data and send

it to APRX as if

Post by Max Harper
it was being received by a tnc. Problem is I can't find

the TNC2 data

Post by Max Harper
format.
Thanks, Max KG4PID
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aprssig mailing list
https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig

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aprssig mailing list
https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig

[Steve Noskowicz]

73, Steve, K9DCI USN (Vet) MOT (Ret) Ham (Yet)

Up to date APRS Beginner Guide - updated Oct-2011
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Click 'APRS Beginner INFO' under Contact

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Subject: Re: [aprssig] TNC2 Data Format
Date: Wednesday, January 2, 2013, 11:21 PM
If there happens to be any diferences, perhaps G8BPQ has
http://www.cantab.net/users/john.wiseman/Documents/BPQ%20TNC2%20Emulator.htm
73, Steve, K9DCI

Yes, it's just text.  I'm not
sure that it's documented anywhere - when I wrote that

code

for the OpenTracker series I just took a TNC2 clone and

a

KPC-3 off the shelf and examined what they put out.
For your purposes, it should be enough to do
SOURCE>DESTINATION,PATH:PACKET.  I'd expect any

APRS

application to parse that correctly.
Scott
N1VG

Post by Max Harper
Is the TNC2 format just plain text, or is some of

the

data outside the

Post by Max Harper
normal ascii text range? I'm trying to get weather

data

into APRX but it

Post by Max Harper
doesn't support weather stations directly. So I'm

thinking about

Post by Max Harper
programing a Pic chip to take my weather data and

send

it to APRX as if

Post by Max Harper
it was being received by a tnc. Problem is I can't

find

the TNC2 data

Post by Max Harper
format.
Thanks, Max KG4PID
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https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig

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[Steve Noskowicz]

Blank post due to inadvertent button click.

73, Steve, K9DCI

[John Wiseman]

Max,

For your application it probably doesn't matter, but generally using just
the 'normal' printable ascii set of 0x20 to 0x7e causes problems with MIC-E
format packets (as I found the hard way!).

73, John G8BPQ

-----Original Message-----
From: aprssig-bounces-***@public.gmane.org [mailto:aprssig-bounces-***@public.gmane.org] On Behalf
Of Steve Noskowicz
Sent: 03 January 2013 05:21
To: TAPR APRS Mailing List
Subject: Re: [aprssig] TNC2 Data Format


If there happens to be any diferences, perhaps G8BPQ has seen them:

http://www.cantab.net/users/john.wiseman/Documents/BPQ%20TNC2%20Emulator.htm



73, Steve, K9DCI

Yes, it's just text.  I'm not
sure that it's documented anywhere - when I wrote that code for the
OpenTracker series I just took a TNC2 clone and a
KPC-3 off the shelf and examined what they put out.
For your purposes, it should be enough to do
SOURCE>DESTINATION,PATH:PACKET.  I'd expect any APRS
application to parse that correctly.
Scott
N1VG

Post by Max Harper
Is the TNC2 format just plain text, or is some of the

data outside the

Post by Max Harper
normal ascii text range? I'm trying to get weather data

into APRX but it

Post by Max Harper
doesn't support weather stations directly. So I'm

thinking about

Post by Max Harper
programing a Pic chip to take my weather data and send

it to APRX as if

Post by Max Harper
it was being received by a tnc. Problem is I can't find

the TNC2 data

Post by Max Harper
format.
Thanks, Max KG4PID
_______________________________________________
aprssig mailing list
https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig

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aprssig mailing list
https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig

[Andrew P.]

It's also documented in the original APRS 1.0.1 protocol specification, but I don't have the page number handy (the AEA TNC format is also documented there, for those that use it).

Andrew Pavlin, KA2DDO
------Original Message------
From: Steve Noskowicz
To: aprssig-***@public.gmane.org
Sent: Jan 3, 2013 12:21 AM
Subject: Re: [aprssig] TNC2 Data Format



If there happens to be any diferences, perhaps G8BPQ has seen them:

http://www.cantab.net/users/john.wiseman/Documents/BPQ%20TNC2%20Emulator.htm


73, Steve, K9DCI

Yes, it's just text.  I'm not
sure that it's documented anywhere - when I wrote that code
for the OpenTracker series I just took a TNC2 clone and a
KPC-3 off the shelf and examined what they put out.
For your purposes, it should be enough to do
SOURCE>DESTINATION,PATH:PACKET.  I'd expect any APRS
application to parse that correctly.
Scott
N1VG

Post by Max Harper
Is the TNC2 format just plain text, or is some of the

data outside the

Post by Max Harper
normal ascii text range? I'm trying to get weather data

into APRX but it

Post by Max Harper
doesn't support weather stations directly. So I'm

thinking about

Post by Max Harper
programing a Pic chip to take my weather data and send

it to APRX as if

Post by Max Harper
it was being received by a tnc. Problem is I can't find

the TNC2 data

Post by Max Harper
format.
Thanks, Max KG4PID
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https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig

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