Sun 5/25/14.1:00 PM. I am monitoring the current active frequencies for the 98Th running of the Indy 500. This is being done with just a Uniden 396XT and a rubber duck antenna. Freqs are the following 455.925 Spanish voice coverage, 455.1375 IMS Public Address, 454.000 Indy Car Radio, 452.1375(R) Pagoda, 450.3875 Indy Car Radio Network with producer, 451.6875(R) Indy Car timing and scoring. 451.4125(R) Unknown. 452.1375(R) IMS Yellow Shirts. *(R) Indicates repeater.