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Old 07-25-2009, 06:36 PM
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Default KSICS Radio Operator Selecting Towers?

When a radio operator on the KSICS keys up on the radio does the radio select which tower to hit or can the operator select one on the radio? Lately, I have heard some Pottawatomie local SO Dispatch on the Olathe tower.


John
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Old 07-25-2009, 06:47 PM
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No, it's automatic and based on RSSI level. However, you can lock a radio to a tower once you've roamed to it. I would guess that someone is affiliated through the Olathe tower and is monitoring that talk group.
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Old 07-25-2009, 08:32 PM
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The radio traffic was a car check at Randolph State Park. It was the only traffic I seen from that TGID or anywhere near there for a couple days. Seemed kinda odd. Perhaps, some tech dropped a screw driver in the switch box or something. Anyway, always nice to hear traffic from the other side of the state.

John
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Old 07-26-2009, 02:37 PM
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Quote:
Originally Posted by KCoax View Post
The radio traffic was a car check at Randolph State Park. It was the only traffic I seen from that TGID or anywhere near there for a couple days. Seemed kinda odd. Perhaps, some tech dropped a screw driver in the switch box or something. Anyway, always nice to hear traffic from the other side of the state.

John
It could have been one of their deputies was in the Kansas City area for business (prisoner transport- a run to OMB police supply, court, etc) and their radio was "dragging" the signal with him, like Mancow suggested. That is a prime reason to make sure and program ALL the talkgroups you would like to hear on the system into your scanner- regardless of where they usually operate. It would not surprise me to hear radio traffic from the Garden City area sporadically in KC or Topeka!

This is a neat feature- and one that KDOT is watching very closely. Some of their techs are afraid that a "perfect storm" could happen, where users across the state could saturate a single site and cause the system to crash (I hope it is more robust than that!). The "everyday example" they gave was a law enforcement or firefighter funeral where agencies come to a town from across the state- leaving their radios on and dragging their radio traffic along behind them. Like I said, I think that the system is more robust than that- and the system would start giving busy signals before it ever got to the point of overwhelming the controller - if not, then the state bought the wrong system as the same scenario will likely occur anytime we have a moderate to large disaster.

They point to the Platte Canyon High School incident in Bailey, Colorado a few years ago. Colorado has a sister system ours in place. Their technicians had to go in and deaffiliate radio sites as users all over the state turned their radios to the incident channels out of curiosity.

Last edited by KAA951; 07-26-2009 at 02:41 PM..
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Old 07-28-2009, 12:48 PM
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Honestly, the notion of a radio dragging a talk group made my brain itch. I understand now what you two are describing. I thought that one of the selling points of the digital system was that on a digital system 100's if not 1,000's of users could use their radios without delay. I read something like this in a KDOT press release from around 2006. I looked and was unable to locate that file. One would think that during R&D the technology would of been tested to ensure how many users could use the service. It's not as if this equipment could be used for anything important.

I have all the current RR groups programs and I leave the scanner on search for any new ones.
TGID 165 as a new one yesterday. Probably KDOT in Chanute.

John
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Old 07-28-2009, 03:54 PM
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no chanute is 300 seris
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Old 07-28-2009, 04:10 PM
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I think it all comes down to the radios "affiliating" and "unaffiliating" with a particular site. I've heard some of the Techs chatting about it in the past. It is apparently one of those little "tweaks" that needs to be adjusted periodically as more users are added and the admistrators get a feel for the load each particular group adds to the total system. I know there were also some "glitches" when they first started. Like some radios that were staying affiliated with a site, even after it had affiliated with the next site or hadn't been seen by that site for several days.

Some agencies may never stray off their local tower(s) at all, while other (LifeTeam Helos for example) are ALL over the system on a day to day basis. How long each group (and I suppose even each radio) will automatically stay affiliated with a tower will have to be adjusted when a history is developed for them.

When the system first came up in our area, I noticed 20 to 30 radios at a time being affiliated with the Wichita tower almost constantly. Now it seems like there are rarely more then 7 to 10 at a time.....
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Old 07-28-2009, 05:52 PM
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Quote:
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TGID 165 as a new one yesterday. Probably KDOT in Chanute.
Good guess
165= KDOT Iola Sub Area
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Old 07-29-2009, 03:09 PM
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sitting in Wichita and picking up Pottawatomie County Sheriff Talkgroups.
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Old 07-30-2009, 03:55 PM
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4254 was active in Olathe around 01:16hrs for about 2 minutes.

Lately there has been KHP Event (channels) and PSAP test traffic, do you know if this is testing MOTOBRIDGE?

John
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Old 08-28-2009, 07:23 PM
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Default PSAP tests and Butler County

The testing on PSAP and similar talkgroups is probably due to the recent grant orders for radios being delivered. In south central KS for example, each dispatch center received 2 radios: one to stay on their respective PSAP tg and one to select whatever tg they want to talk on. Another radio went to each EOC.

Heard the past couple of days how Butler County is trying to find funding for their $13m digital radio system project. Wonder how long it will be before someone calls their bluff on the "mandated" change to digital 800? The media keeps quoting them as saying they are being forced to abandon UHF for digital 800 by 2013. Not true. But that line has been going around for some time now, mostly from non-radio people walking away from state meetings and totally misunderstanding what they were told.
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Old 08-28-2009, 07:39 PM
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so what is going to happen?
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