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School zone signs and RF control of such
http://www.interceptradio.com/bbs/viewtopic.php?f=20&t=4247		 Page 1 of 2
Author:  Wilrobnson [ Wed Jun 02, 2010 6:26 pm ]
Post subject:  School zone signs and RF control of such
These recently went in near my place for a local elementary school. Question is, cellular or data through the Puyallup/Tacoma TRS?

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Author:  SpudGunMan [ Wed Jun 02, 2010 6:37 pm ]
Post subject:  Re: School zone signs and RF control of such
i dont see a controller box for that one.. you sure its just not a remote relay from the school office or something, blip out telemetry. I am not aware of any that are TRS controlled (I can be very wrong just didnt ever see one)
as for cell they are $$$ and normally have a controller box right there

I would be surprised if its technical at all from the units I have worked with they are very low tech and easy to mess with, normally just a simple clock controller to a COM port that is connected to the radio relay board if equipped. (again only 2 brands I have ever seen) but that dont mean there is about 30 others that are big

I would have just liked to honk at you as you were zooming in on a street sign while on a walk and yell "take a picture it will last longer"

anyone seen the units Bellevue put in on 8th camera units, speaking of cooler school units
Author:  TMF [ Wed Jun 02, 2010 7:22 pm ]
Post subject:  Re: School zone signs and RF control of such
We have the same thing out here on the arterial just to the west of me. Now I have to look and see if there is an antenna!? I figured the school had some control over them because there was never any rime or reason to the times the lights would be flashing. This year, they added the speed limit is in effect from "7:00AM to 4:00PM".
Author:  N7QOR [ Wed Jun 02, 2010 10:00 pm ]
Post subject:  Re: School zone signs and RF control of such
In Federal Way we have 2 contraptions.

1 is the flashing lights, and they have a "pancake" style antenna on the control box.

The latest is the speed cams, and those have 2 antennas. The pancake just like the flashy lights, and a smaller diameter but taller, similar to the MAXRAD low profile stubby antennas.
Author:  Atomic Taco [ Wed Jun 02, 2010 10:23 pm ]
Post subject:  Re: School zone signs and RF control of such
Does the search function not work? I swear we did this thread less than 6 months ago.
Author:  Wilrobnson [ Wed Jun 02, 2010 10:33 pm ]
Post subject:  Re: School zone signs and RF control of such
Atomic Taco wrote:
Does the search function not work? I swear we did this thread less than 6 months ago.


Those were different signs....
Author:  Wilrobnson [ Fri Jun 04, 2010 8:06 am ]
Post subject:  Re: School zone signs and RF control of such
SpudGunMan wrote:
i dont see a controller box for that one.. you sure its just not a remote relay from the school office or something, blip out telemetry.


There's a large controller box on the back of the sign itself; one on both signs at opposite ends of the block. Pics to follow at a later date.

PotatoBazooka wrote:
I am not aware of any that are TRS controlled (I can be very wrong just didnt ever see one) as for cell they are $$$ and normally have a controller box right there


I was just thinking back to all of the highway callboxes I used to see in remote Nevada that were linked to Highway Patrol through their EDACS trunked system...They look the same except for, of course, the flashing lights.
Author:  cparris2 [ Sun Jun 06, 2010 9:08 am ]
Post subject:  Re: School zone signs and RF control of such
Just FYI, I started noticing the same types of signs in the Washington County (OR) area a month or so ago. Probably been there for a while but I hadn't seen them with the antennas before. I've been asking around but no one seems to know who or how these things are getting their instructions...

- Chris
Author:  SpudGunMan [ Sun Jun 06, 2010 10:45 am ]
Post subject:  Re: School zone signs and RF control of such
normally they are just programed ON.OFF

as for the antennas sometimes there is a beacon that the front office of the school can flip and it will activate them on a override type thing

but thats just my limited exposure to one or two brands and models
Author:  KE7JFF [ Mon Jun 07, 2010 3:11 pm ]
Post subject:  Re: School zone signs and RF control of such
cparris2 wrote:
Just FYI, I started noticing the same types of signs in the Washington County (OR) area a month or so ago. Probably been there for a while but I hadn't seen them with the antennas before. I've been asking around but no one seems to know who or how these things are getting their instructions...

- Chris


One of my contacts at the Hillsboro School District said they were timer controlled via Power Line Control.
Author:  Atomic Taco [ Fri Jun 18, 2010 12:08 am ]
Post subject:  Re: School zone signs and RF control of such
Went by Camelot Elementary School in Federal Way earlier this week, and they have a pair of these:

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Author:  Jim [ Fri Jun 18, 2010 10:19 am ]
Post subject:  Re: School zone signs and RF control of such
No licenses for Eltec in FCC database.
Author:  Atomic Taco [ Fri Jun 18, 2010 11:17 am ]
Post subject:  Re: School zone signs and RF control of such
http://www.elteccorp.com/schoolzones.php
Author:  Jim [ Fri Jun 18, 2010 11:51 am ]
Post subject:  Re: School zone signs and RF control of such
Tim it sounds like one model can be programmed by a paging service. The others are stand alone and programmed by key pad.

I would make a guess that the black round thing on the side of the box is an antenna for the pager inside.
Author:  Atomic Taco [ Fri Jun 18, 2010 12:04 pm ]
Post subject:  Re: School zone signs and RF control of such
Jim wrote:
I would make a guess that the black round thing on the side of the box is an antenna for the pager inside.
I was thinking that too.
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