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themick07 15-03-2014 11:01

Use of radios for communication
 
Are we allowed to use radios for communication from the pit to the stands?

engunneer 15-03-2014 11:06

Re: Use of radios for communication
 
They have been banned in the past, but I don't see a specific rule this year. Why not cell phones?

themick07 15-03-2014 11:07

Re: Use of radios for communication
 
Quote:

Originally Posted by engunneer (Post 1359171)
They have been banned in the past, but I don't see a specific rule this year. Why not cell phones?

Terrible signal. We are in The Wolstein Center in Cleveland. A college basketball court.

ayeckley 15-03-2014 12:17

Re: Use of radios for communication
 
Quote:

Originally Posted by themick07 (Post 1359172)
A college Faraday cage.

Fixed that for you.

Al Skierkiewicz 15-03-2014 12:47

Re: Use of radios for communication
 
Check in the "At the Event" rules.

4.15 SITE RESTRICTIONS
Please read the following common site restrictions and adhere to them in order to promote an orderly, safe, pleasant
and exciting competition. Please refer to Administrative Manual - Section 4.2 FIRST Safety for additional site
restrictions at your event.


Do not use walkie-talkies.

Just adding to the following post.

Chris_Ely 15-03-2014 12:57

Re: Use of radios for communication
 
From the Admin. manual:
Quote:

Originally Posted by Admin. Manual 4.15
Do not use walkie-talkies.


goofy173 19-03-2014 15:01

Re: Use of radios for communication
 
So cell phones with push-to-talk would be exactly the same as a walkie talkie and therefore banned. How would they know?

Joe Ross 19-03-2014 15:33

Re: Use of radios for communication
 
Quote:

Originally Posted by goofy173 (Post 1361390)
So cell phones with push-to-talk would be exactly the same as a walkie talkie and therefore banned. How would they know?

I suspect that the rule isn't intended to ban the function of the walkie-talkie, but rather the implementation. FIRST uses multiple sets of radios for communication between volunteers, which I suspect they do not want to be interfered with. Cell phone push-to-talk does not operate in the personal radio frequency range.

Tungrus 19-03-2014 15:36

Re: Use of radios for communication
 
Hotspots using cell phones and similar technology creates interference too! PLEASE PLEASE do not mess our robots! Get pigeons if you can but no walkie-talkie!

fb39ca4 19-03-2014 15:45

Re: Use of radios for communication
 
Doesn't say anything about ham radios. I don't see what the issue would be about interference, as those and walkie-talkies do not operate on the same bands as wifi.

Libby K 19-03-2014 18:39

Re: Use of radios for communication
 
Quote:

Originally Posted by fb39ca4 (Post 1361417)
Doesn't say anything about ham radios. I don't see what the issue would be about interference, as those and walkie-talkies do not operate on the same bands as wifi.

Event managers and key volunteers use radios to communicate across the competition venues.

As has been said already, it's in the manual not to use them. So don't.

Al Skierkiewicz 23-03-2014 13:28

Re: Use of radios for communication
 
While it would seem that this is an RF interference issue, that is not all. It is part of the "leveling the playing field" issue. Any item that could give a team an advantage over other teams that is not specifically allowed in the rules, is likewise banned. That is why you can't use a bigger battery or motors not listed.
And by the way, you don't have to be on the same frequency to produce interference. Ask me about this sometime. It is a very complex subject.

JCharlton 23-03-2014 14:54

Re: Use of radios for communication
 
Quote:

Originally Posted by Tungrus (Post 1361415)
Hotspots using cell phones and similar technology creates interference too! PLEASE PLEASE do not mess our robots! Get pigeons if you can but no walkie-talkie!

I think pigeons might mess with the robots too.

RallyJeff 23-03-2014 15:22

Re: Use of radios for communication
 
Quote:

Originally Posted by fb39ca4 (Post 1361417)
Doesn't say anything about ham radios. I don't see what the issue would be about interference, as those and walkie-talkies do not operate on the same bands as wifi.

There are walkie-talkie style ham radios, which is what anyone at an FRC event would probably be using - I hope nobody's considering setting up a base station in their pit.

Depending on the power output of a ham radio, its distance from other devices, and the extent of the RF shielding/protection in those devices, a ham radio can most certainly cause interference in other devices on different bands... and even on sensitive electronics generally.

Koko Ed 23-03-2014 15:28

Re: Use of radios for communication
 
Teams aren't supposed to use them but I have seen quite a few teams with them. So who do we report this to?


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