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BC-DX TopNews WWDXC #945 BC-DX 945

BC-DX TopNews WWDXC #945 BC-DX 945

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You will also find this report on the "new" homepage of IARU-R1,<br />

<br />

Big thanks to all hams who have helped in this case, especially to Glenn<br />

VK4DU, Peter VK3MV, Brett VR2BG, and Arasu VU2UR. Keep up your good work!<br />

(Uli Bihlmayer-DJ9KR, INTRUDERALERT mailing list Jan 2)<br />

IARU-MS was only concerned with keeping TIGER out of the 10100-10150 kHz<br />

30m hamband, but where else might it be? pdf link below includes this:<br />

On a real time data display on internet you are able to read the<br />

transmission frequency of the different TIGER radars. You can also see a<br />

picture with the "fan" in different colours showing the structures of the<br />

ionosphere. Please hit<br />

<br />

And the above link includes this, rather unspecific info:<br />

"TIGER is controlled remotely from La Trobe University in Melbourne,<br />

Australia. It uses HF radio waves in the 8 to 20 MHz range. It consumes<br />

only 2 kW of power, the same as some electric kettles and transmits an<br />

average of 200W - the same as two bright light globes.<br />

"TIGER typically operates near 14 MHz during day-time and 12 MHz at night<br />

but this changes with the level of solar activity. It is also capable of<br />

swept-frequency operation meaning that when irregularities are widespread<br />

throughout the ionosphere, the radar detects ionospheric and sea scatter<br />

over much of its range window and over a broad band of frequencies"<br />

Altho obviously doing valuable ionospheric research, which might even be<br />

applicable to SWL/<strong>DX</strong>ing, it seems it could also interfere with many other<br />

transmissions unless it is disallowed e.g. from broadcast bands. I have<br />

enquired about its actual frequency usage.<br />

(Glenn Hauser-OK-USA, dxld Jan 4)<br />

AUSTRALIA [and non] CVC - John Wright Jan 03 to Ian Baxter-AUS "The<br />

Cox Peninsula was under a ten year lease to CVC, the government will hand<br />

it back to the traditional owners. Kendari people so that's the end of<br />

that...<br />

(SW TXsite ng, via Ian Baxter-AUS, Jan 6)<br />

So indeed shortwave appears to be a done deal for Christian Vision. And<br />

yes, the governmental body that operated the Australian broadcasting<br />

transmitters at this time closed the Darwin/Cox site in 1997, following<br />

budget cuts for foreign broadcasting. It is also correct that in 2000 the<br />

site had been leased to Christian Vision for ten years, and probably<br />

(although not necessarily) they simply let the lease run out now instead<br />

of renewing it. Now the question is if Broadcast Australia or another<br />

operator will step in. It could happen, but I would not count on it.<br />

Concerning the transmission equipment: At present it consists of one of<br />

the original Collins transmitters from 1968 (three such rigs are still in<br />

use at Sackville, too) which can now be manually tuned only, requiring<br />

about 15 minutes. Otherwise there are three rather modern Thomson<br />

file:///Z|/DOKUMENTATION-BULLETINS/WW<strong>DX</strong>D-<strong>BC</strong><strong>DX</strong>/2010/<strong>BC</strong><strong>DX</strong>946.TXT[11.06.2012 10:39:46]

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