There's a new National Traffic System gateway for the Automatic Packet Reporting System. Here's instructions from Michael, WZ0C.
How to use the APRS NTS Gateway
With the APRS gateway for NTS, you can send a Radiogram on to DTN by
sending it to "NTSGTE" on APRS. Here's the process:
1. Send your listing to NTSGTE. E.g. "QTC 1" (or whatever quantity you
have) Some people skip the listing and go straight into the message, which
works if you only have one message and start with the preamble.
2. Then send your message in this format, per the APRS specification (with
a couple of updates):
N#\number\precedence\handling\originator\check\place\time\date
NA\address_line1\address_line2\address_line3\address_line4
NP\phone number
NE\email address
N1\line 1 of NTS message text
N2\line 2 of NTS message text
N3\line 3 of NTS message text
N4\line 4 of NTS message text
N5\line 5 of NTS message text
N6\line 6 of NTS message text
NS\Signature block\signature line 2\signature line 3
The fields above are optional where reasonable. E.g., you don't have to
have 6 lines of text. You don't have to have 3 lines in the signature.
You don't have to have a phone number in the addressee field. Etc.
You can use lower case letters if it's simpler. They will be converted
to upper case.
An example Radiogram sent in this format looks like:
N#\380\R\\WZ0C\9\MAYNARD MA\\AUG 27
NA\MICHAEL WZ0C\MAYNARD MA 01754
NE\WZ0C ATSIGN ARRL DOT NET
N1\THIS IS A TEST MESSAGE
N2\SENT WITH APRS 73
NS\MICHAEL WZ0C
3. NTSGTE will "Roger" the message.
The received message is then relayed to the Digital Traffic Network.
If you have more messages to send as part of your listing, go back to
step 2 and send the next message.
Command reference
The following are the commands that the gateway understands:
INFO # Display an example radiogram
HELP # Same as INFO
QTC 1 # List one piece of traffic
N#\ # The message preamble
NA\ # The message addressee
NP\ # The addressee phone number
NE\ # The addressee email address
N1\ # Line one of the text
N2\ # Line two of the text, etc.
NS\ # The message signature
QSL? # Validate the currently held message and report any issues
READBACK # Display the currently held message
READ BACK # Same as READBACK
CANCEL # Cancel the current message (and subtract one from the listing)
Additional information
If you've sent the entire Radiogram and haven't received confirmation
within a reasonable time, you can send "QSL?".
If you make an error in a message and want to start over, you can
send "CANCEL".
If there is an error in one line, you can also just resend that line
with the error corrected.
resend messages if no acknowledgement is received.
Messages are buffered line by line by the gateway until the full message
is received and the check is correct. Then the message is rogered, and
the buffer is reset for the next message.
For more information on how to construct a Radiogram, see:
https://www.k8amh.com/radiogram/
For more information about the NTS Gateway for APRS, send
email to Michael WZ0C <wz0c@arrl.net>.
With the APRS gateway for NTS, you can send a Radiogram on to DTN by
sending it to "NTSGTE" on APRS. Here's the process:
1. Send your listing to NTSGTE. E.g. "QTC 1" (or whatever quantity you
have) Some people skip the listing and go straight into the message, which
works if you only have one message and start with the preamble.
2. Then send your message in this format, per the APRS specification (with
a couple of updates):
N#\number\precedence\handling\originator\check\place\time\date
NA\address_line1\address_line2\address_line3\address_line4
NP\phone number
NE\email address
N1\line 1 of NTS message text
N2\line 2 of NTS message text
N3\line 3 of NTS message text
N4\line 4 of NTS message text
N5\line 5 of NTS message text
N6\line 6 of NTS message text
NS\Signature block\signature line 2\signature line 3
The fields above are optional where reasonable. E.g., you don't have to
have 6 lines of text. You don't have to have 3 lines in the signature.
You don't have to have a phone number in the addressee field. Etc.
You can use lower case letters if it's simpler. They will be converted
to upper case.
An example Radiogram sent in this format looks like:
N#\380\R\\WZ0C\9\MAYNARD MA\\AUG 27
NA\MICHAEL WZ0C\MAYNARD MA 01754
NE\WZ0C ATSIGN ARRL DOT NET
N1\THIS IS A TEST MESSAGE
N2\SENT WITH APRS 73
NS\MICHAEL WZ0C
3. NTSGTE will "Roger" the message.
The received message is then relayed to the Digital Traffic Network.
If you have more messages to send as part of your listing, go back to
step 2 and send the next message.
Command reference
The following are the commands that the gateway understands:
INFO # Display an example radiogram
HELP # Same as INFO
QTC 1 # List one piece of traffic
N#\ # The message preamble
NA\ # The message addressee
NP\ # The addressee phone number
NE\ # The addressee email address
N1\ # Line one of the text
N2\ # Line two of the text, etc.
NS\ # The message signature
QSL? # Validate the currently held message and report any issues
READBACK # Display the currently held message
READ BACK # Same as READBACK
CANCEL # Cancel the current message (and subtract one from the listing)
Additional information
If you've sent the entire Radiogram and haven't received confirmation
within a reasonable time, you can send "QSL?".
If you make an error in a message and want to start over, you can
send "CANCEL".
If there is an error in one line, you can also just resend that line
with the error corrected.
If you're getting duplicate APRS messages back from NTSGTE, check that your APRS
client is configured to send message acknowledgements. APRS systems willresend messages if no acknowledgement is received.
Messages are buffered line by line by the gateway until the full message
is received and the check is correct. Then the message is rogered, and
the buffer is reset for the next message.
For more information on how to construct a Radiogram, see:
https://www.k8amh.com/radiogram/
For more information about the NTS Gateway for APRS, send
email to Michael WZ0C <wz0c@arrl.net>.
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