<div dir="auto"><div dir="auto">Nothing prevents you from using the free text comment section of an APRS position report, object, or status packet for your own needs. Create a software parsable format that is distinct (e.g. starting the comment with "&&") and stuff your meta data there.</div><div dir="auto"><br></div><div dir="auto">Bob W9IZ </div><div dir="auto"><br></div><div dir="auto"><br></div><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Aug 17, 2023, 4:14 AM Borja Marcos <<a href="mailto:ea2ekh@gmail.com" target="_blank" rel="noreferrer">ea2ekh@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
I am new to the list, I hope this is the right place to discuss this issue. This is not a complete proposal, of course,<br>
just a “weather balloon” ;)<br>
<br>
As many members will be aware, there is an effort underway to use LoRa modulation on 433 MHz for<br>
APRS. There are several open source projects which, as a plus, are based on dirt cheap and easy to obtain<br>
hardware,<br>
<br>
<a href="https://github.com/richonguzman/LoRa_APRS_Tracker" rel="noreferrer noreferrer noreferrer" target="_blank">https://github.com/richonguzman/LoRa_APRS_Tracker</a><br>
<a href="https://github.com/dl9sau/TTGO-T-Beam-LoRa-APRS" rel="noreferrer noreferrer noreferrer" target="_blank">https://github.com/dl9sau/TTGO-T-Beam-LoRa-APRS</a><br>
<a href="https://github.com/lora-aprs/LoRa_APRS_iGate" rel="noreferrer noreferrer noreferrer" target="_blank">https://github.com/lora-aprs/LoRa_APRS_iGate</a><br>
<br>
There is also one commercial product available, picoAPRS LoRa. It is more pricey, but, well, all of us know<br>
that developing and supporting an actual product is hard.<br>
<br>
<a href="http://www.db1nto.de/index_en.php" rel="noreferrer noreferrer noreferrer" target="_blank">http://www.db1nto.de/index_en.php</a><br>
<br>
All of it is a bit ad-hoc now with no agreed standards (as far as I know). While some of the developers have<br>
agree informally to use APL?? device IDs for LoRa based equipment, not every developer is following that<br>
rule, <br>
<br>
As far as I know there are also other modems/phys used with APRS. For example VARA on HF.<br>
<br>
I think it would be great to add some metadata to the databses used by the APRS mapping applications including,<br>
as a minimum, a modem/phy identification (and frequency, which could be useful for HF) so that they can be<br>
more useful to study/check certain kinds of APRS activity. <br>
<br>
Right now, for example, there are dashboards relying just on APL??? device IDs. <br>
<br>
<a href="http://lora.ham-radio-op.net/?center=43.3508,-3.0499&zoom=12" rel="noreferrer noreferrer noreferrer" target="_blank">http://lora.ham-radio-op.net/?center=43.3508,-3.0499&zoom=12</a><br>
<br>
Another interesting possibility offered by a more flexible database model could be adding some metadata specific<br>
to certain modems. As an example, LoRa chips can provide RSSI and SNR data which could prove valuable for <br>
propagation/coverage studies.<br>
<br>
What do you think?<br>
<br>
<br>
73,<br>
<br>
<br>
Borja Marcos / EA2EKH<br>
<br>
<br>
<br>
<br>
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</blockquote></div></div>