• Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

    We've noticed a huge increase in rants and negative posts that revolve around agencies going to encryption due to the broadcasting of scanner audio on the internet. It's now worn out and continues to be the same recycled rants. These rants hijack the threads and derail the conversation. They no longer have a place anywhere on this forum other than in the designated threads in the Rants forum in the Tavern.

    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:
    https://forums.radioreference.com/rants/224104-official-thread-live-audio-feeds-scanners-wait-encryption.html

2019 Indianapolis 500

a1emt

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Dec 19, 2002
Messages
150
Anyone attend the Indy Grand Prix this past weekend? Post your finds here!

I am heading down for the 500 and getting my radios programmed :cool:

Here is the spotter guide from the Grand Prix, including the frequencies for each car. IndyCar will post the spotter guide for the 500 once the field is set.

https://www.indycar.com/-/media/Files/2019/IndyCar/05-IGP/indycar-spotterguide-V2.pdf?la=en

Here are some freqs from last year:

Race Control: 468.825MHz (103.5 PL)

IMS Track Safety 451.725Mhz (218.1 PL)

Track PA System: 455.1375

IndyCar Radio: 454.000
 

shoverbj

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May 23, 2018
Messages
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Location
Indianapolis, IN
Figured I'd start off the 2019 IMS thread since I was as the track on Saturday for the GP and will be there at least this Friday and race day.

First off, on Saturday the PA was on a different channel (I will post later). Don't know if that will be the case for the full month or if it was just that day.

Spotter guide with all drivers frequencies:
https://digbza2f4g9qo.cloudfront.net/-/media/Files/2019/IndyCar/06-500/indycar-spotterguide-PQ.pdf?vs=1&d=20190515T121635Z

Previous year's frequencies:
https://wiki.radioreference.com/index.php/Indiana_Sports#Indianapolis_Motor_Speedway

Anybody with updates feel free to post them here.
 

milf

Careful, I CAN hear you!
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Big test for AT&T out there this year... IPSC is setting up an FirstNet Mobile Site at the track, part of the BIG PUSH IPSC is doing for FirstNet this year. So we will see how it goes. (Again, data only for FN, all voice comms are on IDPS and SAFE-T.) And as this will be second year with the new UHF system in use, if everything is same use this season, I will go ahead and put it all in the DB.
 

cubn

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Dec 22, 2004
Messages
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Marion/Johnson County, IN
The main frequencies I hear are:
452.050 186.2 Maintenance (repeater)
451.725 218.8 Track Safety (repeater)

Today during practice I heard:
468.825 103.5 PL - IndyCar Officials

*New* 461.3125 712 DPL ... Track traffic control, ADA cart request (repeater)
 

cubn

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Dec 22, 2004
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Marion/Johnson County, IN
Race control 468.825 is still the same in 2019. Haven't heard the others but will listen again on Fri (I'm 3 mi away so I may just be out of range)
That might have been a good list in 2007 when it was posted. Is it still accurate 12 years later?
I have further verified that 461.3125 DCS712 is used by parking staff.
 
Joined
Apr 30, 2008
Messages
592
Location
pittsboro in / mesa az
And as this will be second year with the new UHF system in use, if everything is same use this season, I will go ahead and put it all in the DB.
UHF for the track? They finally got their own license last year after using Racing radios freqs for years. One repeater was on Zore's Speedway repeater, I emailed Racing electronics to let them know.

The 450/455 part 74 freqs usually don't have CTCSS for repeater TX or didn't when I was in TV about 10 years ago.
 

danesgs

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May 21, 2008
Messages
121
Don't forget to look for their annual HF special event station W9IMS callsign, really cool QSO cards each year!
 
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