No real surprises. Almost no activity on the public safety trunked systems, though I did discover that Speedway PD Special Ops channel is now encrypted. I focused this year on IndyCar Officials and driver frequencies.
IndyCar officials and driver frequencies from this year's Indy 500: http://forums.radioreference.com/threads/indycar2020.410255/post-3363736
468.825 (103.5) Indy Car Race Control
451.7250 (218.1) IMS "Fire Channel"
452.0500 (186.2) IMS Maintenance
461.3125 (712 DPL) IMS Traffic
IDPS TRS S1-T2 traffic detail
450.8375 (167.9)
454.000 (CSQ)
455.1375 (CSQ)
141.175 (AM) USAF Thunderbirds
IndyCar officials and driver frequencies from this year's Indy 500: http://forums.radioreference.com/threads/indycar2020.410255/post-3363736
468.825 (103.5) Indy Car Race Control
451.7250 (218.1) IMS "Fire Channel"
452.0500 (186.2) IMS Maintenance
461.3125 (712 DPL) IMS Traffic
IDPS TRS S1-T2 traffic detail
450.8375 (167.9)
454.000 (CSQ)
455.1375 (CSQ)
141.175 (AM) USAF Thunderbirds