Ipswich VKR?

Communications scanning & radio related discussion for Queensland, covering Brisbane, Townsville, Cairns, Rockhampton etc
Comint
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Re: Ipswich VKR?

Post by Comint »

bill54 wrote:Roma is now linked to Toowoomba via our Miles site which has a separate link up to the Bunyas and then to Toowoomba.With this up and running Toowoomba now has contact with both the Roma and Charleville police districts from Miles thru to Eromanga...
I seem to be missing something here, as you speak as if this is a recent event.

In 2007, I carried out an analysis of all the Links from Toowoomba to Charleville, based on information in the ACMA Database, and a recent review of that data shows no new Links have been added, so Toowomba should have been able to contact both the Roma and Charleville Police Districts back in 2007.

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Comint
bill54
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Re: Ipswich VKR?

Post by bill54 »

orangepeel wrote:
bill54 wrote:Roma is now linked to Toowoomba via our Miles site which has a separate link up to the Bunyas and then to Toowoomba.With this up and running Toowoomba now has contact with both the Roma and Charleville police districts from Miles thru to Eromanga...
Got a link frequency??
Not off the top of the head,usually the link is not active until Friday nites thru to Sunday arvo when our staff numbers are down out here.Then tasking on big jobs (000 etc) is handled by Toowoomba and sent back thru to us..
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AIRMAN
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Re: Ipswich VKR?

Post by AIRMAN »

That's not the 468 mHz police banding then?
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AIRMAN
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Re: Ipswich VKR?

Post by AIRMAN »

Comint wrote:
AIRMAN wrote:Alernatively SEARCH 467.0000 thru 469.50000 12.5 khz steps & if you have an Icom use AW.
Huh??

Links are in the range of:-

413.4375 - 414.4625 paired with 403.9875 - 405.0125
459.4865 - 461.0125 paired with 450.4875 - 451.5125, and
461.0125 - 462.0000 paired with 451.5125 - 452.5000

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Comint
You've lost me here Comint ole buddy. The frequencies you have are for Ambos, Some Firies and Pagers. What do you mean paired with? How would one set these up on a scanner search? ( sansPC )
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Phil
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Re: Ipswich VKR?

Post by Phil »

Links are in those areas, the paired frequency is the links Input. hope that helps you a bit more as they are very much like a repeater
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Comint
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Re: Ipswich VKR?

Post by Comint »

AIRMAN wrote:You've lost me here Comint ole buddy.
In the "old days" Repeaters on mountain tops were connected to the Comcentre by landlines. Nowadays, they use Radio Links which may be Microwave Links, Satellite Links, or the frequency bands listed above.

AIRMAN wrote:The frequencies you have are for Ambos, Some Firies and Pagers.
The frequency bands listed above are specifically for Radio Links, as specified in ACMA's Radiocommunications Assignment and Licensing Instruction (RALI) MS22 - 400 MHz Plan, and you shouldn't find any QAS or QFRS Repeaters, in that area.

AIRMAN wrote:413.4375 - 414.4625 paired with 403.9875 - 405.0125
What do you mean paired with?
"Paired" means, for example, that 413.4375 and 403.9875 are used together, or 414.4625 and 405.0125 are used together, just like a Repeater Tx frequency and a Repeater Rx frequency are used together. However, with Links, either frequency can be used as a Tx frequency, or a Rx frequency, depending on where they are used.

For example: A Link from a Comcentre to a mountain top, say Mt Mowbullan, would have a Tx of 413.xxx at the Comcentre, and a Rx of 413.xxx on Mt Mowbullan, but the Receive leg would have a Tx of 403.yyy on Mt Mowbullan, and a Rx of 403.yyy at the Comcentre. The same frequency pair can be used to connect Mt Mowbullan to Pechy, and Mt Mowbullan to Miles Hill, with the same Tx frequency used on Mt Mowbullan for all three Links.

If it was decided to use the same frequencies to link to other Sites, from Miles Hill, then the Miles Hill Tx would be on 413.xxx, and Rx would be on 403.yyy (ie.,the reverse of Mt Mowbullan)

AIRMAN wrote:How would one set these up on a scanner search?
Just program in both link frequencies.

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Comint
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Re: Ipswich VKR?

Post by Stretch »

Thanks Comint for that. I learnt a bit as well :)
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Re: Ipswich VKR?

Post by AIRMAN »

Yeah X2 Thanks Comint!!
bill54
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Re: Ipswich VKR?

Post by bill54 »

No it's not a recent event,you'd be correct in saying about 2007 when it was put in,however it was very rare for it to be used.However the talk of a central Comms Room for anything west of the Bunyas has raised it's head again again and looks like it may become the norm now.Firecom and QAS out this way have been run by Toowoomba for a couple of years now and seems to work ok.We have a complete Comms room here in Roma but no staff to man it.That may change if the purse strings are loosened a bit and we can get some CROs here.At the moment we cover Roma and Charleville districts with our UHF system plus Quilpie and Eromanga comes into Charleville via ROIP.Tambo will be our next install as far as the ROIP system goes.The UHF system covers mainly the highway so once we're away from that the Codan is utilised a far bit.
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