[TheList] Auckland air Traffic control

Mon Apr 12 17:36:46 AEST 2010

Last time I heard/read about this it was only on one of the Optus satellites
D2 from memory so most NZers would have a SKY dish up and won't be looking
at D2.
Denis

-----Original Message-----
From: thelist-bounces at radiowiki.org.nz
[mailto:thelist-bounces at radiowiki.org.nz] On Behalf Of Neill Ellis
Sent: Monday, 12 April 2010 5:24 p.m.
To: thelist at radiowiki.org.nz
Subject: Re: [TheList] Auckland air Traffic control

Hi Kevin,

I haven't done it myself, but as I understand it you can indeed listen 
to some of the ATC feeds on satellite.

You obviously still need a power feed to the LNB, so most people use a 
splitter with power pass only on one port, that port going to the 
satellite receiver that powers the LNB. You connect a scanning receiver 
to the port on the splitter that is DC isolated to prevent the power to 
the LNB damaging your scanner.

The scanner needs to be able to tune into the frequency range coming out 
of the LNB, which could be anywhere from 950MHz to 2400MHz depending 
upon your LNB and it's Local Oscillator.

Here's the slightly difficult bit! The Local Oscillator in most LNB's is 
not locked to a stable reference such as a crystal, so they tend to 
drift up and down a bit. You will need to find out what frequency the 
Local Oscillator actually is to calculate what frequency your scanner 
needs to tune to. Then again it's going to be changing with temperature 
drift etc.

Those who do this that I know have bought expensive PLL locked LNB's 
where the Local Oscillator is locked to a stable crystal reference to 
stop this wandering, even then they still do wander a little, but 
nowhere near as bad as a normal LNB.

Avcomm in Sydney stocked this PLL LNB's last time I needed one for 
another project, they weren't cheap, but I expect the likes of Jayx, 
Supreme Antennas, Hooktech could also provide them here in NZ.

Reality is, if you live outside the geographic area of interest this is 
a realistic way of listening in. But if you live in the area a simple 
aerial and cheap scanner and you are in business. Scanners with the 
higher UHF frequencies required to listen to ATC generally cost quite a 
bit more.

Regards,

Neill.

Kevin Cosgrove wrote:
> Hi  
>
> Am I reading this right.  Can you listen to ATC from Auckland via a dish
and a scanner  Are these frequencys satellite fed
>
> Thanks
>
> Kevin
> On 11/04/2010, at 9:00 PM, Neill Ellis wrote:
>
>   
>> Well, there's a list posted elsewhere someone might like here :-)
>>
>>
>> -------- Original Message --------
>> Date: 	Sun, 11 Apr 2010 20:13:25 +1200
>>
>>
>>
>> Bank 1) Auckland International 1 NZAA Tower Primary 118.700
>> 2 NZAA Tower Secondary 120.800
>> 3 NZAA Delivery 128.200
>> 4 NZAA Ground 121.900
>> 5 NZAA Apron 123.000
>> 6 NZAA ATIS 127.800
>> 7 Ramp (Air NZ Int'l) 131.900
>> 8 Ramp (Air NZ Domestic) 132.900
>> 9 Ramp (Air NZ Link) 131.000
>>
>> Bank 2) Auckland Regional Control 11 Auckland Control 129.500 12 Auckland
Area Control 120.500
>> 13 Auckland Approach 124.300
>> 16 Christchurch Control Central North Island 119.500
>> 17 Auckland Control 129.6
>> 18 Auckland Oceanic Control Primary 123.900
>> 19 Auckland Oceanic Control Secondary 134.000 20 Christchurch Information
(Akl region) 118.500
>>
>>
>>
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>>     
>
>
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