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Revision as of 20:14, 27 May 2019 by Cubn (talk | contribs)

All race communications between car, spotter and driver are analog in the clear. In fact, since 2013 NASCAR has banned all digital radio usage by teams during races (source).

The practice of car to car communication was banned in 2012 to prevent tandem drafting at the superspeedways.

Digital Radios:
Since 2008, NASCAR staff have been using digital MOTOTRBO TDMA digital format radios for race control and fire/medical response.

All reports indicate these MOTOTRBO channels are encrypted. Two of the MOTOTRBO frequencies are patched to the old analog channels. Radioreference listeners have reported the following in use at multiple NASCAR events:

  • 464.8875 CC 13 (encrypted) [reported in 2018]
  • 463.6250 had group 15735975 on slot 1 and 15642315 on slot 2 (CC=11) (encrypted) [reported in 2015 and 2016]
  • 463.2625 had group 10888888 on slot 1 (CC=15) (encrypted) [reported in 2015]

References:
https://forums.radioreference.com/threads/nascar-dmr-mototrbo-frequencies.355164/ https://forums.radioreference.com/threads/coming-down-to-the-nascar-race.333231/#post-2578833 https://tbacomm.com/downloads/motorola/case_studies/nascar_mototrbo.pdf https://www.rfvenue.com/blog/2014/12/13/nascar-is-one-of-the-biggest-wireless-events-in-the-world https://www.youtube.com/watch?v=H1qQp_SaIrM https://forums.radioreference.com/threads/motorola-trbo-and-nascar.171289/ https://forums.radioreference.com/threads/coming-down-to-the-nascar-race.333231/#post-2578833 https://forums.radioreference.com/threads/coming-down-to-the-nascar-race.333231/#post-2578833

Analog:
All but two of the NASCAR officials' channels will be utilizing which can only be monitored by a few scanners, according to the "NASCAR going digital" Radioreference Forum Thread. Still, a few NASCAR officials channels' remain analog, as listed below.

Confirmed May 2019 (source)

  • 461.200 432 DPL
  • 464.600 631 DPL


  • NASCAR 1 & 11, Race Control 461.200
  • NASCAR 2 & 12, Race Control B/U 464.600
  • NASCAR 5 & 15, Safety 451.225
  • NASCAR 10 Qualifying 451.575
  • RACE CONTROL 461.200
  • RACE CONTROL B/U 464.6000, 463.625(463.625-DMR, heard at Michigan June 2016)
  • SAFTY/FIRE 451.2250
  • NASCAR Weather 467.8500
Frequency  Input   
Type  Tone  Alpha Tag  Description  Mode  Tag 
461.20000  466.20000   RM  432 DPL  NASCAR-1 NASCAR-1  FM  Business 
464.60000      RM  632 DPL  NASCAR-2 NASCAR-2  FM  Business 
463.62500        NASCAR-3 NASCAR-3  FM  Business 
464.77500        NASCAR-4 NASCAR-4  FM  Business 
451.22500        NASCAR-5 NASCAR-5  FM  Business 
451.27500        NASCAR-6 NASCAR-6  FM  Business 
451.42500        NASCAR-7 NASCAR-7  FM  Business 
451.45000        NASCAR-8 NASCAR-8  FM  Business 
451.57500        NASCAR-9 NASCAR-9  FM  Business 
451.52500        NASCAR-9 NASCAR-9  FM  Business 
461.20000        NASCAR-11 NASCAR-11  FM  Business 
464.60000        NASCAR-12 NASCAR-12  FM  Business 
463.62500        NASCAR-13 NASCAR-13  FM  Business 
451.17500        NASCAR-14 NASCAR-14  FM  Business 
451.22500        NASCAR-16 NASCAR-16  FM  Business 
464.50000        NASCAR-16 NASCAR-16  FM  Business 
  • 451.575 and 451.175 were reported as being used for scoring on this same wiki page in 2006, but it's unknown at this time if those frequencies are now unmonitorable.


https://www.rfvenue.com/blog/2014/12/13/nascar-is-one-of-the-biggest-wireless-events-in-the-world