ACMA Search Details

Communications scanning & radio related discussion for Australia, covering all states and territories - discussion that is on a national level only
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youngn
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ACMA Search Details

Post by youngn » Wed Dec 24, 2008 11:30 pm

CONFUSION!!! :roll:

My Confusion! =

With the Land Mobile Systems; for example we will use DREAMWORLD, Dreamworld has 2 repeaters, 1 paging system, and 4 other Land Mobile Systems, under the same callsign as the second repeater, but with one freqency listed as Transmit AND Receive.

Ive been led to believe that AMBULATORY means simplex, so what do these Land Mobile Systems mean? with just the one frequency for Transmit AND Receive?

The only thing remotely similar I could find on the A.C.M.A. website, were things called Supplementary Base Stations, which are "used to improve the reliability of the service within the service area of the base station" Im not sure if this has anything to do with it.

Hopefully there is a simple answer to this one :?

Thanks

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Re: ACMA Search Details

Post by rochedalescan » Wed Dec 24, 2008 11:47 pm

youngn wrote:CONFUSION!!! :roll:

My Confusion! =

With the Land Mobile Systems; for example we will use DREAMWORLD, Dreamworld has 2 repeaters, 1 paging system, and 4 other Land Mobile Systems, under the same callsign as the second repeater, but with one freqency listed as Transmit AND Receive.

Ive been led to believe that AMBULATORY means simplex, so what do these Land Mobile Systems mean? with just the one frequency for Transmit AND Receive?

The only thing remotely similar I could find on the A.C.M.A. website, were things called Supplementary Base Stations, which are "used to improve the reliability of the service within the service area of the base station" Im not sure if this has anything to do with it.

Hopefully there is a simple answer to this one :?

Thanks

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Comint should know, hes pretty good at this type of stuff.
Thanks for finding all these frequencies again.

Cheers Shane
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Re: ACMA Search Details

Post by youngn » Thu Dec 25, 2008 12:12 am

Haha No Problem....

Just learning how to navigate through the ACMA search stuff.

MORE TO COME.. if I can figure out some more topics and learn a bit more about the types of licences and freqs. like above...

MERRY CHRISTMAS!!!

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Re: ACMA Search Details

Post by Comint » Thu Dec 25, 2008 1:13 am

youngn wrote:CONFUSION!!! :roll:

My Confusion! =

With the Land Mobile Systems; for example we will use DREAMWORLD, Dreamworld has 2 repeaters, 1 paging system, and 4 other Land Mobile Systems, under the same callsign as the second repeater, but with one freqency listed as Transmit AND Receive.

Ive been led to believe that AMBULATORY means simplex, so what do these Land Mobile Systems mean? with just the one frequency for Transmit AND Receive?

The only thing remotely similar I could find on the A.C.M.A. website, were things called Supplementary Base Stations, which are "used to improve the reliability of the service within the service area of the base station" Im not sure if this has anything to do with it.

Hopefully there is a simple answer to this one :?

Thanks

---
youngn
Ambulatory basically means 'without Base Stations'. In others words, there are only mobiles, be they vehicles or hand-helds.

~~~~~~

Having the same frequency for both Transmit and Receive just means it is Simplex.

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Re: ACMA Search Details

Post by youngn » Fri Dec 26, 2008 2:33 pm

Ahh true true..

Thankyou Comint :)

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Re: ACMA Search Details

Post by fIlThY » Mon May 11, 2009 7:51 pm

Could they also include simplex repeaters?
RX ...................TX
Site A................Site B
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Re: ACMA Search Details

Post by Stretch » Mon May 11, 2009 7:56 pm

fIlThY wrote:Could they also include simplex repeaters?
RX ...................TX
Site A................Site B

No such thing as simplex repeaters.

Simplex (no repeater) or;
Duplex (with a repeater)
Last edited by Stretch on Mon May 11, 2009 7:59 pm, edited 1 time in total.
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Re: ACMA Search Details

Post by Comint » Mon May 11, 2009 8:42 pm

fIlThY wrote:Could they also include simplex repeaters?
RX ...................TX
Site A................Site B
If you have a Tx on one Site, and a Rx on a second Site, on the same frequency, it is usually a Link.
Stretch wrote: No such thing as simplex repeaters.
Not quite true. There are such things as Store and Forward repeaters, which operate on a single frequency. One station can send a short message to the Repeater, and it is recorded (Stored). When the PTT is released, the Repeater then transmits (Forwards) that message. Such systems are sometimes known as Parrot Repeaters, because they repeat what they hear.

There is/was a Parrot Repeater on at least one of the Amateur Satellites.

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Re: ACMA Search Details

Post by Stretch » Mon May 11, 2009 9:09 pm

Comint wrote:
Stretch wrote: No such thing as simplex repeaters.
Not quite true. There are such things as Store and Forward repeaters, which operate on a single frequency. One station can send a short message to the Repeater, and it is recorded (Stored). When the PTT is released, the Repeater then transmits (Forwards) that message. Such systems are sometimes known as Parrot Repeaters, because they repeat what they hear.

There is/was a Parrot Repeater on at least one of the Amateur Satellites.

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