Millitary "Frequency" - ACMA Search

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youngn
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Millitary "Frequency" - ACMA Search

Post by youngn » Thu Apr 09, 2009 10:59 pm

Hi all,

Been searching the 300 meg range, and stumbled accross this irregular licence.
Licenced to the Department of Defence. The assigned frequency is 361.200 Mhz, but i noticed that
the upper and lower frequencies were so very different, and it turns out that the emission bandwidth allowed is a whopping 51.6 Mhz. Its an Australia Wide, Transmit and Recieve frequency...

Just baffled as to WHAT this is used for and WHY it is one big huge whopping bandwidth.

:?: :shock: :!:

Link -

http://web.acma.gov.au/pls/radcom/assig ... ID=2219334

Thanks Guys

EDIT

Found another one in the 200 Meg range

http://web.acma.gov.au/pls/radcom/assig ... ID=2219327

This one has bandwidth of 32 MHz.. Assigned frequency - 251.000 Mhz

Thanks again
"YOUNGN"

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Re: Millitary "Frequency" - ACMA Search

Post by hotmetal1000 » Fri Apr 10, 2009 6:34 am

Possibly a huge data transfer frequency, the more data you want to throw in the least amount of time requires more bandwidth. :?:

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Re: Millitary "Frequency" - ACMA Search

Post by Phil » Mon Apr 13, 2009 7:43 pm

in this pdf that i use the only people that will know what it is used for is the ADF and even then only a hand full of people will know
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Re: Millitary "Frequency" - ACMA Search

Post by JAFO » Sun May 10, 2009 6:58 pm

Could be used for anything and everything!

Unlike civilian organisations, the ADF have very little outside interference when it come to the way they use their frequency bands, as long as they don’t stray on to Civilian Organisation’s systems they can do near any thing they want – data, voice, video anything basically.

The exception is on the old HF Bands where the ADF are a little sensitive about its use, reason being some radio operators could tune into the ABC Radio to listen to the ABC News while out on exercise, only to accidentally transmit onto the ABC frequency when called by another station/callsign - a big no no :oops:
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Re: Millitary "Frequency" - ACMA Search

Post by Stretch » Sun May 10, 2009 7:08 pm

JAFO wrote:The exception is on the old HF Bands where the ADF are a little sensitive about its use, reason being some radio operators could tune into the ABC Radio to listen to the ABC News while out on exercise, only to accidentally transmit onto the ABC frequency when called by another station/callsign - a big no no :oops:
Oops :lol:
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Re: Millitary "Frequency" - ACMA Search

Post by rochedalescan » Sun May 10, 2009 7:33 pm

We had that as an example at SES, they were saying that they used to operate on a frequencies that was a little bit out of a millitary one and SES were doing training one day and so was the army.

So the SES operator said something like "Repeat last message" and then there was a loud explosion because apparently repeat in army terms means fire again so therefore they changed it to "Say Again"

Cheers Shane
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Re: Millitary "Frequency" - ACMA Search

Post by Stretch » Sun May 10, 2009 7:55 pm

Rochedalescan wrote:We had that as an example at SES, they were saying that they used to operate on a frequencies that was a little bit out of a millitary one and SES were doing training one day and so was the army.

So the SES operator said something like "Repeat last message" and then there was a loud explosion because apparently repeat in army terms means fire again so therefore they changed it to "Say Again"

Cheers Shane
That is why it got stressed to me during SES training and in ACMA training to never say repeat.
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Re: Millitary "Frequency" - ACMA Search

Post by youngn » Mon May 11, 2009 4:40 pm

Stretch wrote:That is why it got stressed to me during SES training and in ACMA training to never say repeat.
haha yes
"YOUNGN"

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Re: Millitary "Frequency" - ACMA Search

Post by Mathew » Sat May 23, 2009 11:38 am

Ohhh darn it.

Haha. We also use "Say again" in SJAA.


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Re: Millitary "Frequency" - ACMA Search

Post by AIRMAN » Sat May 23, 2009 3:04 pm

Mathew wrote:Ohhh darn it.

Haha. We also use "Say again" in SJAA.


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Yes and in Aviation as well it's "Say again?"

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Re: Millitary "Frequency" - ACMA Search

Post by Kevaclone » Sat Jul 31, 2010 4:56 am

youngn wrote:Hi all,

Been searching the 300 meg range, and stumbled accross this irregular licence.
Licenced to the Department of Defence. The assigned frequency is 361.200 Mhz, but i noticed that
the upper and lower frequencies were so very different, and it turns out that the emission bandwidth allowed is a whopping 51.6 Mhz. Its an Australia Wide, Transmit and Recieve frequency...

Just baffled as to WHAT this is used for and WHY it is one big huge whopping bandwidth.

:?: :shock: :!:

Link -

http://web.acma.gov.au/pls/radcom/assig ... ID=2219334

Thanks Guys

EDIT

Found another one in the 200 Meg range

http://web.acma.gov.au/pls/radcom/assig ... ID=2219327

This one has bandwidth of 32 MHz.. Assigned frequency - 251.000 Mhz

Thanks again
Oh yeah I realise this is an old one


Maybe for some spread Spectrum freq hopping satellite use going on there huh??
Australia was using a form of spread spectrum comms for years. The US later adopting the same system
used in the Milsat system

I have a print out of all the freqs and uses for that system. though it's about 10 years old now. But it does make mention of the ultra wide band use

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