Queensland GWN transmit frequencies

Communications scanning & radio related discussion for Queensland, covering Brisbane, Townsville, Cairns, Rockhampton etc
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Grunter1
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Queensland GWN transmit frequencies

Post by Grunter1 » Sat Jul 13, 2019 8:07 am

Hey guys,
I’m wondering what the transmit frequencies for the Queensland GWN are.

The Radioreference database shows the band plan is between 416.4625 and 420.000 MHz and has a truckload of control frequencies between 420 and 424 MHz but I don’t think it shows transmit frequencies. And yes I know the GWN is digital P25 and encrypted - I’m just interested in knowing what the transmit frequencies are.

Thanks and cheers.

Grunter1.

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Radio_Australia
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Re: Queensland GWN transmit frequencies

Post by Radio_Australia » Sat Jul 13, 2019 8:09 am

Look at acma database for each tower , you will see them registered

Grunter1
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Re: Queensland GWN transmit frequencies

Post by Grunter1 » Sat Jul 13, 2019 8:34 am

Thanks RA but I was just wanting a simple frequency range that’s all

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domestos
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Re: Queensland GWN transmit frequencies

Post by domestos » Sat Jul 13, 2019 12:22 pm


Comint
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Re: Queensland GWN transmit frequencies

Post by Comint » Sat Jul 13, 2019 2:49 pm

Grunter1 wrote:
Sat Jul 13, 2019 8:07 am
Hey guys,
I’m wondering what the transmit frequencies for the Queensland GWN are.

The Radioreference database shows the band plan is between 416.4625 and 420.000 MHz and has a truckload of control frequencies between 420 and 424 MHz but I don’t think it shows transmit frequencies. And yes I know the GWN is digital P25 and encrypted - I’m just interested in knowing what the transmit frequencies are.

Thanks and cheers.

Grunter1.
ALL the frequencies shown are Transmit frequencies.

The frequencies shown in Red or Blue are the Control Channels. The others are the Traffic Channels (where the actual conversations take place).

--
Comint

Grunter1
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Re: Queensland GWN transmit frequencies

Post by Grunter1 » Sat Jul 13, 2019 4:05 pm

Excellent Comint thanks for clarifying.

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Radio_Australia
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Re: Queensland GWN transmit frequencies

Post by Radio_Australia » Sat Jul 13, 2019 7:45 pm

are you asking for the transmit frequencies of car/handheld radios ie uplink to repeater ?

, or tx from repeaters ?

Uplink frequencies are around 426mhz ,
Tx from repeaters are slightly lower

Grunter1
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Re: Queensland GWN transmit frequencies

Post by Grunter1 » Sun Jul 14, 2019 9:40 am

Tx frequencies for both RA

railscan
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Re: Queensland GWN transmit frequencies

Post by railscan » Sun Jul 14, 2019 12:08 pm

Just to clarify, there is no such thing as repeater uplink frequencies. The correct terminology is:

BTX - Base Transmit and BRX - Base Receive. Also MTX - Mobile Transmit and MRX - Mobile Receive.

There is a relationship in that BTX = MRX and BRX = MTX. It would make life easier particularly when talking about repeaters to use BTX/BRX. Most scanner users are only concerned with BTX frequencies.

When talking simplex, use MTX/MRX. Even though the frequencies are the same.

Also don't fall for the myth that BRX frequencies are not encrypted, they are. I have in my time heard many stories about how encryption can be beaten by listening on the BRX frequencies. The people conveying this information should start by saying "Once upon a time..."

R

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