Jefferson County Public Safety Radio System

[marksroberson]

hello everyone! I am in the process of moving houses, ( having to change addresses on everything uhhhhhh...) anyways! I was scanning through all of the frequencies in my scanner and hit the 700 MHz range and heard Jefferson county public safety's 800mhz radio system 's talkgroups on 700 MHz (heard them on 793.159375mhz and 793.2375 MHz and a few others in that area) but I did not hear a control channel, Mabye it's just my location but, anyways, why do we have the 700mhz channels? Is this a backup? Any answers welcome!

 

[Thunderknight]

Probably Images.
They aren't real, the scanner just picks them up due to mixing in the front end.
http://forums.radioreference.com/gre-scanners/212942-gre-scanners-receiving-images.html

 

[marksroberson]

Ok, thanks! Sorry, I didn't know