Here's a link to some info on some upcoming radio upgrades and changes.
http://www.dallascityhall.com/commi...FA_RadioTechnologyProcurementUpate_041612.pdf
http://tinyurl.com/747t4jk
http://www.dallascityhall.com/commi...FA_RadioTechnologyProcurementUpate_041612.pdf
http://tinyurl.com/747t4jk