Can you purchase APRS trackers ?

[N2NXZ]

Can anyone buy these trackers on this website ?
https://www.weather.gov/upperair/factsheet
Also...when do we know when these payloads will be launched ?
Jim,N2NXZ

[K3RLD]

The listed radiosondes are not APRS trackers.

Do you want an APRS tracker, or a radiosonde? For APRS trackers, you can find the "tinytrak" or "stratotrak":

https://www.byonics.com/tinytrak4
https://www.highaltitudescience.com/pro ... ransmitter

[N2NXZ]

I should have known better than to think it was APRS.I mistaken them because they are seen on Google APRS tracking and was confused. The APRS trackers on the market are a bit pricey.Actually...ridiculous to be honest.
I build HF trackers for less than 40 dollars and same with APRS but was curious what the pricing is on the trackers I was asking about.Just pure curiosity and wanted to know if anyone can purchase those?
Seems they launch them and they are lost forever and thinking they can not be too expensive since they are disposable basically?
Jim

[N2NXZ]

I have radios / antennas that cover all band all mode for these weather balloon transmitters should they be in range of my area,but how do I know when they are launching them?
Is there a website that posts upcoming flights so I can start tracking?
Or is this a 24/7 sort of thing where I leave my radio on specific frequency all the time?
I will guess it must be an attended sort of thing where I would need to be physically at my radio.
Jim