PyRadmon install and set up on Raspberry Pi (Wheezy Raspbian)

My bad.... Indeed, working fine now!
Thanks !!

Transitioned to a Raspberry Pi Model 3B. The WiFi seems to be significantly more stable with both 2.4GHz and 5GHz bands supported. The good news is the Python program transitioned without any edits at all.

Tested on Raspberry Pi1 model B, if you launch it on foreground (/usr/bin/python /root/PyRadmon.py), it works,
but if you launch it in background (/usr/bin/python /root/PyRadmon.py > /dev/null 2>&1 &), the program stops sending any data and dies after a while.
Also if you launch it on startup (/etc/rc.local), the program stays in background, but it does not send data at all.

That's a rather odd way of running stuff on the background..
Maybe you should look into services. Not sure what you have, but look at either SystemD service scripts or use the good old /etc/init.d/ script
Let me have a look..

It seems I have found a solution:

crontab -e

@reboot /usr/bin/python /root/PyRadmon.py > /dev/null 2>&1

No way, it doesn't work, it only works if you launch it in foreground, it doesn't matter if you launch it as a service, from /etc/rc.local or from crontab @startup, it simply dies after a few seconds.
I tested both, 1.2.0 and 1.3.0 versions.