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| VTAC & VCALL... http://interceptradio.com/bbs/viewtopic.php?f=26&t=1462 |
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| Author: | PRESTONBJ [ Sun Mar 04, 2007 8:27 pm ] |
| Post subject: | VTAC & VCALL... |
Has anyone heard any traffic on the VTAC Channels and VCALL frequencies? I see where a few counties in Eastern Washington have them programmed in the sheriff mobile and portable radios, but I have not heard any traffic here in the Moses Lake area. I usually monitor ALL local/state from 7am til almost 6pm. |
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| Author: | icom1020 [ Mon Mar 05, 2007 9:03 am ] |
| Post subject: | |
no, pretty dead. I programmed them all in my Icom and I get an image on VTAC 1 or VCALL from an adjacent transmitter. I think it's there to be there when something big happens. OSCCR is supposed to move to 12.5 spacing after July 08 " The bandwidth of OSCCR transmitters shall be 25 KHz. After July 1st 2008 the bandwidth of OSCCR transmitters shall be 12.5 KHz." |
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| Author: | PRESTONBJ [ Tue Nov 03, 2009 8:16 am ] |
| Post subject: | Re: VTAC & VCALL... |
Did OSCCR ever move to narrowband? I am still programming it wideband in all radios. |
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| Author: | Vizwar [ Tue Nov 03, 2009 9:10 am ] |
| Post subject: | Re: |
icom1020 wrote: no, pretty dead. I programmed them all in my Icom and I get an image on VTAC 1 or VCALL from an adjacent transmitter. I think it's there to be there when something big happens. OSCCR is supposed to move to 12.5 spacing after July 08 " The bandwidth of OSCCR transmitters shall be 25 KHz. After July 1st 2008 the bandwidth of OSCCR transmitters shall be 12.5 KHz." I'm making an educated guess here but it sounds like VTAC/CALL is the VHF equivalent to ITAC and ICALL here in 800MHz land. If that's the case I wouldn't expect much activity except for the occasional volunteer keying up on the wrong zone in the radio. |
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| Author: | icom1020 [ Tue Nov 03, 2009 10:08 am ] |
| Post subject: | Re: VTAC & VCALL... |
A lot of the NB spacing hasn't occurred as quickly as assumed. I read somewhere that the NB spacing for railroads is off for several years. How many VHF radios even have VTAC's? It's taking up 5 slots in my radio and I would like to program something else there. |
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| Author: | Vizwar [ Tue Nov 03, 2009 10:26 am ] |
| Post subject: | Re: VTAC & VCALL... |
I have never heard of VCAL/VTAC in the Seattle metro area but then again you don't hear people say 'switch to I-TAC 3' either, yet it's there. If I remember right, ICALL/ITAC are there in the event of a system failure but I always questioned that; how can 5 channels manage thousands of radio users? This is a Sean question. It's been too long since I was involved at that level to say for certain. |
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| Author: | FireDawg89 [ Tue Nov 03, 2009 11:12 am ] |
| Post subject: | Re: VTAC & VCALL... |
ITAC / ICALL I don't think is for a system failure I believe it is for a national mutual aid system. I can take my 800 Mhz radio from Washington State and in Florida I can reach a dispatch agency on Icall or ITAC. I'm sure someone out there will correct me if I'm wrong. |
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| Author: | Vizwar [ Tue Nov 03, 2009 11:22 am ] |
| Post subject: | Re: VTAC & VCALL... |
FireDawg89 wrote: ITAC / ICALL I don't think is for a system failure I believe it is for a national mutual aid system. I can take my 800 Mhz radio from Washington State and in Florida I can reach a dispatch agency on Icall or ITAC. I'm sure someone out there will correct me if I'm wrong. OH OH! That's right I remember now. Ya you hit it. I went to a conference in Georgia several years ago and it was mentioned. EDIT: So in that case you'd think VHF agencies in Seattle metro would have the VHF ones. I wonder if there is a never used patch on 800 somewhere. Never seen one by name in the radios but it could be patched to a MARS or LERN-ish talkgroup on an infrastructure level I suppose. |
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| Author: | KE7JFF [ Tue Nov 03, 2009 1:34 pm ] |
| Post subject: | Re: VTAC & VCALL... |
Down here in the Portland Metro, VCALL and all that I have heard used by a few firefighters and once in a while OSP if a unit wants to talk to another unit nearby direct. |
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| Author: | FireDawg89 [ Tue Nov 03, 2009 3:03 pm ] |
| Post subject: | Re: VTAC & VCALL... |
You wont hear much action on VCALL or ITAC our 800 Mhz radios have I believe 6 Banks ABCDEF and each hold 15 Talk Groups. Thats 90 TG's and everyone is loaded. I can talk to almost every TRS system in the state |
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| Author: | Wilrobnson [ Tue Nov 03, 2009 5:43 pm ] |
| Post subject: | Re: VTAC & VCALL... |
Vizwar wrote: FireDawg89 wrote: EDIT: So in that case you'd think VHF agencies in Seattle metro would have the VHF ones. I wonder if there is a never used patch on 800 somewhere. Never seen one by name in the radios but it could be patched to a MARS or LERN-ish talkgroup on an infrastructure level I suppose. Like what Clark County/Las Vegas has done? They linked the 800 mhz I-Call/Tac freqs to VHF ones since most every LE agency down there is VHF, but fire is 800. |
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| Author: | icom1020 [ Tue Nov 03, 2009 6:11 pm ] |
| Post subject: | Re: VTAC & VCALL... |
I hear units call in on Benton Co. talk group 4880 , by saying 'WSP xxx calling Benton Co. master control on LERN" but I have never heard LERN being used at the same time. |
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| Author: | chpalmer [ Tue Nov 03, 2009 10:18 pm ] |
| Post subject: | Re: VTAC & VCALL... |
Im of the thought that all these frequencies should be repeated, and connected cross band. They seem very under-utilized... |
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