Signal spotters (help me find people on the air!)

Where should I look if I want to see a list of currently active frequencies?

Are there free versions, or is it a closed, pay-for-play kind of thing?

submitted by /u/chandler404
[link] [comments]

from RSSMix.com Mix ID 8212326 http://ift.tt/2fXIYmp
via IFTTT