APRS WX frame dat upgrade for embedded stations?

[F5OPV]

Wouldn't it be possible to add other types of data to APRS WX-frames to get benefit of aprs.fi WX charts ?

Following examples:

v454 ---> MCU board voltage 4v54,

T075 ---> Internal Temperature 75F from 2nd Temp. sensor located for ex inside house (t... already existing in the frame for 1st sensor outside )

H95 ----> Internal Humidity 95% (h already existing in WX frame)

x35 -----> Luminosity 35% (vs full scale of ADC MCU lux sensor, L & l data already exist for W/m2)

This would permit for ex to send a single Wx frame with tlm data, instead of 5 frames:

- 1 x WX

- 3 x TLM signif.

- 1 x TLM data.

The main advantage of Tx Wx + TLM is to divide power consumption of stand-alone bat powered devices by 5 !!!

This way, and with LoRa TX devices as Lilygo in deep sleep mode, we can get 3x1v5 Li battery devices work 4 to 6 months without batteries replacement for remote locations without mains (forests, mountains, rivers or sea...).

With adding chart of bat voltage on aprs.fi, it would be so possible to follow the bat discharge.

For the moment, I'm peronnaly  using the comment zone of wx frame  to tx external data, which doen't allow to get benefit of aprs.fi wx charts as for data already included (T,RH, P, Wind...)

Just take a look at F4GGH-ZZ.

Thanks for reading and answer.

73 de F5OPV

Thanks for reading

[Heikki Hannikainen]

Hi,

No, I don't think it is a good idea to broaden the weather format with
more custom fields. I will not support that motion.

It would be a never-ending road where everyone comes up with new fields
according to their needs. All recipients and decoders of those packets
would need to be updated every time to be able to decode the new field
definitions.

It is much better to just send them in a generic telemetry format which
allows sending any telemetry values to all receivers, according to
whatever future needs a transmitter may have, without implementing new
changes to the receiving side.

On the other side: aprs.fi does support Base91 comment telemetry which
allows embedding telemetry in position packets:

http://he.fi/doc/aprs-base91-comment-telemetry.txt

aprs.fi also supports Kenneth's APRS telemetry proposal, which reduces the
need to send equations. Also, you only need to send the PARM packets once
per day or week, they will be cached by the recipients. You don't need to
send the 3 extra parameter packets every time.

https://blog.aprs.fi/2020/03/aprsfi-supports-kenneths-proposed.html

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- Hessu