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Weather beacon position over RF #weather


 

Hi All,
?
Maybe this has been asked but I cant find anything. I am trying to setup my RF port to beacon the weather and position but no matter what I do I cant get the weather to be beaconed with the position.


 

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Just some info. You can get your weather data broadcast over the internet and it will show on APRS just like an RF broadcast one. I can find the info and website I used. It’s a national weather link.?

73 Bill

On Feb 4, 2025, at 1:07?PM, Jamie Elovski via groups.io <jamiesastrophotos@...> wrote:

?
Hi All,
?
Maybe this has been asked but I cant find anything. I am trying to setup my RF port to beacon the weather and position but no matter what I do I cant get the weather to be beaconed with the position.


 

There are a few things you have to do to have your weather data beaconed with your position reports.

1. You have to have a weather input port opened on YAAC that is receiving the weather data. Serial_Weather accepts serial port data from Peet Bros brand weather stations; WXNOW.TXT accepts weather from any weather station being handled by Cumulus or similar weather client software. In either case, use the View->Weather Status menu choice to confirm you are actually seeing current data from your local weather sensors in YAAC.

2. In your beacon definition, you have to enable your beacon and check the box to have it Report Weather.

3. Due to a quirk in the APRS Protocol Specification, the course and speed fields of a position report always mean the course and speed of the radio station, not the wind, unless the APRS symbol code is for a weather station (/_ or \_). YAAC is smart enough to recognize when you are using a non-weather-station symbol code that would cause your wind information to be lost, and will send the Position Report (without weather information) immediately followed by a Positionless Weather Report (which doesn't care what your symbol code is). This has the convenience that you could have a mobile weather station (e.g., stormchaser) reporting the course and speed of your chase vehicle in the Position Report, plus the weather data separately. YAAC, unfortunately, does not have support for the vector math necessary to convert air velocity around a moving vehicle into ground-relative wind velocity, so your weather sensors would have to do the math prior to delivering the data to YAAC.

Hope this helps.

Andrew, KA2DDO
author of YAAC

________________________________________
From: [email protected] <[email protected]> on behalf of Jamie Elovski via groups.io <jamiesastrophotos@...>
Sent: Tuesday, February 4, 2025 11:49 AM
To: [email protected]
Subject: [yaac-users] Weather beacon position over RF #weather

Hi All,

Maybe this has been asked but I cant find anything. I am trying to setup my RF port to beacon the weather and position but no matter what I do I cant get the weather to be beaconed with the position.


 

Of course, this only works if you have a working Internet connection and the same for the Internet site you are sending your data to (the APRS-IS is highly redundant if you choose to use one of the regional rotate names rather than a single hard-coded server address; I can't speak for other weather-data-consuming services).

My local ARES/RACES group has weather stations all over our county using RF to deliver the data to an I-gate physically located at the county Department of Emergency Services office, so they can get the data even if there are Internet outages (peeling it off before the I-gate sends it to the APRS-IS).

Andrew, KA2DDO

________________________________________
From: [email protected] <[email protected]> on behalf of Bill Gillenwater via groups.io <k3sv@...>
Sent: Tuesday, February 4, 2025 11:10 PM
To: [email protected]
Subject: Re: [yaac-users] Weather beacon position over RF #weather

Just some info. You can get your weather data broadcast over the internet and it will show on APRS just like an RF broadcast one. I can find the info and website I used. It’s a national weather link.

73 Bill

On Feb 4, 2025, at 1:07?PM, Jamie Elovski via groups.io <jamiesastrophotos@...> wrote:

?
Hi All,

Maybe this has been asked but I cant find anything. I am trying to setup my RF port to beacon the weather and position but no matter what I do I cant get the weather to be beaconed with the position.