Posts Tagged ‘Radiation monitoring’

APRS supports radiation monitors

Bob Bruninga, WB4APR, has updated the APRS specifications to allow amateur radiation monitoring stations to report readings over APRS.

  1. A new APRS symbol for a radiation monitor has been defined using the characters RH. Although this is an H symbol with an R overlay, Bob suggests that there is no reason why APRS clients cannot give this symbol a distinctive icon.
  2. A new weather field X has been defined for reporting nuclear radiation levels. The format is Xxxx where the first two digits are the precision and the last is the order of magnitude in nanosieverts. So 123 is 12 * 10^3 nanosieverts or 12 microsieverts.

There are already websites that report radiation levels using proprietary software, for example Radiation Network (which only covers the USA.) But the ability to report this information using the APRS network using the infrastructure that has already been developed for reporting weather observations is an exciting development that will no doubt lead to some interesting constructional projects.

Subscribe FREE to's
Amateur Radio Newsletter

We never share your e-mail address.

Do you like to write?
Interesting project to share?
Helpful tips and ideas for other hams?

Submit an article and we will review it for publication on!

Have a ham radio product or service?
Consider advertising on our site.

Are you a reporter covering ham radio?
Find ham radio experts for your story.

How to Set Up a Ham Radio Blog
Get started in less than 15 minutes!

  • Matt W1MST, Managing Editor

Sign up for our free
Amateur Radio Newsletter

Enter your e-mail address: