Something New In WBBM Chicago Studios....

New mic flags

The 780 AM WBBM simulcast with 105.9 FM began Monday morning as Chicago Mayor Rahm Emmanuel was on hand.

The mayor helped morning co-anchors Felicia Middlebrooks and Pat Cassidy make the switch-over shortly after 8am.  Illinois Gov. Pat Quinn also made an in-studio visit.

Via formatchange.com, listen to switchover by clicking here.

CBS Radio started the simulcast in order to protect it from Merlin Media's FM News 101.1 FM which officially launched on Sunday. 

WBBM is Chicago's #1 rated station and #1 billing radio station.

For now, the WCFS call letters remain for the 105.9 FM frequency,  "WBBM-FM" calls are still assigned to the sister-station CHR.

Governor Quinn participates in the launch party for WBBM Newsradio's first broadcast on 105.9 FM