Gage has some of the flashiest and tallest sticks in the pit area, and said that he and driver Ricky Weiss have several uses for them. One of those coincides with showing the gap between cars, but for a different reason.
Extended races on rougher track surfaces, or ones that are more prone to tire rubber accumulation, can result in increased tire wear and/or decreased component life. Signal sticks can be used to minimize this by telling a driver to take it easier or pick it up if necessary.
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Digital Audio Broadcasting (DAB) is a digital method for broadcasting radio stations. The rtl dongles official driver has DAB decoding capabilities. But when the rtl dongle is used as a software radio, this capability from the original drivers can not used.
As for the mechanics of it... we mount the radio in the car, then each driver has a helmet kit that has a plug pigtail sticking out. That get connected to the radio pigtail. There's also a button on the steering wheel that you use to push-to-talk. Then, of course, an antenna on the roof. Typically magnetic mount, but you can also drill a hole and install them that way...
I've started piecing together a digital radio system using components sourced directly from China, but that list isn't ready for prime-time yet. The quality and range of a digital system is very encouraging though.
Some general tips for radio systems:
- All the options above use the exact same radios. The $85 blue "Rugged" radios are just pre-programmed Bagfeng UV-5R's which are $25 on Amazon. Learn to program radios and save yourself $60 per radio. Charging a premium for pre-programming illegal frequencies is deceptive and I wouldn't encourage it.
- Have extra components on hand for Option 2 or 3 (and 1 if you're made of money). I carry a few extra helmet headsets and car harnesses to each race because they are cheap insurance if something fails.
- A quality brand name roof mount antenna will do wonders for your reception at the track.
- For the sake of yours and everyone else's sanity, use BCL (Busy Channel Lockout). This blocks your from stepping over others on your frequency. If you transmit over someone there's a good change your message won't be received at the other end, so it's best to just transmit when the channel is clear.
- We used to hard-wire our radio into the cars 12V system, but found it a pain to not have radio comms during red flags or starting grids when the car was off. We just use the battery in the radio now and it lasts all day.
- Radios fail sometimes, have regular check-ins and discuss a backup communications strategy with your drivers.
- Mount the radio within reach of the driver so they can adjust the volume to their sensitive ears
Unlike some teams who like to read the stock reports, discuss the weather, debate the next election, etc over the radio, we use the radio to tell the driver when we are ready for him to pit. The driver typically only radios if he has a problem so we can be ready to assist. Translation, we probably have a total air time of 10 minutes over the entire weekend.
Car harness
If you're mounting the radio in the car, you need to be able to connect and disconnect a driver to the system. Again the easy way is to make your own harness. The UV-5r radios use a combination of a 3.5mm and 2.5mm jack (I think it's the kenwood standard). you need a couple resistors and capacitors in the system too. Again, wiring diagram for the harness I've been using without issues for years is in that above link.
5.3: Pit Communication: Every team must have a reliable way to signal its driver on track. A pit board (homemade is fine) is acceptable, as is a helmet-wired radio system. No loose or hand-held receivers are allowed in the car.
whether a radio is important is really a personal preference. I'll never not use one personally. We aren't chatty, we probably have like 5 minutes of radio total all day, but I wouldn't give up the radio for anything. Being able to tell the driver that we're walking onto the hot pits and we'll be at the start of the hot pits is so helpful to the driver who's searching through a sea of people in the same blue suits with white helmets. It's also helpful for relaying issues back to the pits so the rest of the team can get back to the garage and be ready to fix a problem.
Lack of two way radio communication has caused no additional stress on my team. We had a (mostly) well functioning setup for years but then...as drivers cycled in and out and started running two cars more often it grew to be a hassle with little to no value.
The stress for us came from the daytona days when we broke a lot. We had a few races where the radios didn't work right, and something would happen, the car would come in, and the driver would find that everyone was off somewhere else trying to watch the race, so they had to get out and fix the car alone until someone else noticed the car wasn't on track anymore and came back. It was annoying. And other things like trying to find your team mates on the hot pits when everyone out there has the same blue suit and white helmet, we've had the driver blow by the waiting crew before.
It's just nicer to have the radios for us. Everyone grabs a radio if they leave the garage now, so if something happens they can hear and come back. For fueling stops the driver can be told exactly where to look. If something is funky with the car the driver can report back and ask if it's worth coming in or not. All around it just makes race weekend easier on us.
Like I said, we aren't on the radio much at all. We radio check the driver when they get in. They'll call in once or twice with car status updates if they feel like it. At the end of the stint we'll call the driver to say we're walking to the hot pits, and then again to say we're ready for them and where we are. that's mostly it. But those small bits of communication do help us out a lot. I get that not everyone needs it, and that's cool.
We had a few races where the radios didn't work right, and something would happen, the car would come in, and the driver would find that everyone was off somewhere else trying to watch the race, so they had to get out and fix the car alone until someone else noticed the car wasn't on track anymore and came back. It was annoying. And other things like trying to find your team mates on the hot pits when everyone out there has the same blue suit and white helmet, we've had the driver blow by the waiting crew before.
At our last race we were doing well when the driver radioed in that the throttle was hung on wide open and he was coming in. We had been having issues with the throttle body the last two races so we knew what to expect when he arrived. As it turned out, the TB fell OFF (yikes!) but we had another set of bolts and tools at the ready for a quick stop, and were able to get him back out quickly. Without a radio, he would have been sitting in the paddock wondering where we all were. ff782bc1db
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