7.4. Communication
In-Car Radio & Radio Location
7.4.1.1. All voice radio transmissions to and from the Car must be in the 450.000-470.000 MHz range. Analog 12.5K narrowband spacing
bandwidth channels are the only in-Car radio voice transmission and reception permitted. Unless otherwise approved by INDYCAR, the
in-Car radio must not be capable of transmitting or receiving in a digital format. Radio transmissions must not be encrypted, scrambled
or otherwise modified to affect INDYCAR’s ability to record, scan and hear at any time during the Event. Channel hopping transmissions
to or from the in-Car radio are not permitted.
7.4.1.2. Unless otherwise approved by INDYCAR, the in-Car voice radio must only have their two (2) predesignated analog frequencies
(primary and the backup) programmed into the in-Car radio and these two frequencies must be unique from all other in-Car transceivers.
7.4.1.3. All in-Car voice radio analog frequencies will use a DCS/DPL code that is unique to all other Car’s DCS/DPL code.
7.4.1.4. Radios may not be located in the cockpit area.
Frequencies – Each Member transmitting or receiving any signal including, without limitation, voice, data and telemetry, but excluding
Internet related Wi-Fi (regulated pursuant to Rule 7.4.4.) shall:
7.4.2.1. Provide the specifications (e.g., frequency, manufacturer, make, model and serial number) of the radio to be used in the Car and
otherwise, to the INDYCAR-designated representative prior to their first Event;
7.4.2.2. Not password-protect or otherwise affect or limit the INDYCAR-designated representative’s ability to scan and hear the radio to be
used in the Car at any time;
7.4.2.3. Notify the INDYCAR-designated representative immediately upon changing any of the equipment specifications or frequencies of
the radio to be used in the Car and otherwise;
7.4.2.4. Consent and hereby does consent, to the recording, broadcast and/or rebroadcast by INDYCAR or its designee of any such
transmissions through any and all media and for any and all purposes; and NTT INDYCAR SERIES | RULEBOOK | 8.21.2026 Page | 30
7.4.2.5. Comply with all applicable laws regarding such use and indemnify and hold INDYCAR Group harmless with respect to failure to
comply with applicable laws, even if the violation involves INDYCAR Group’s or its designee’s sole or contributory negligence.
7.4.2.6. All non in-Car two way radio voice communication must use the “very Narrow” bandwidth 6.25KHz.
Radio Communication
7.4.3.1. During all on-track Events, radio communication between the Driver and the Entrant’s Pit Box is required at all times.
7.4.3.2. Car-to-Car radio communication is not permitted.
Wireless Data Frequency (“Wi-Fi”) – Each Member transmitting or receiving any signals for wireless data transmissions shall: (i)
coordinate and modify frequencies for use with other wireless data networks as specified by INDYCAR; (ii) limit the use of Wi-Fi to hot spot
use only (the use of Wi-Fi backhaul and hi gain antennas is not allowed); (iii) comply with all applicable laws regarding such use; and (iv)
indemnify and hold INDYCAR Group harmless with respect to failure to comply with applicable laws, even if the violation involves INDYCAR
Group’s sole or contributory negligence.
Non-Indianapolis 500® Mile Race Events – Pit Boxes for the subsequent Race Lo
