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WorkingHard
5th Sep 2010, 09:05
Before I get flamed this is a serious question and not a complaint.
Yesterday I spent about 8 hours airborne from north to south west and return and the quality of the RT transmissions was markedly different between the civil and the military controllers. The service was equally as good in both cases of course but some military transmissions were quite poor in that we had to "say again" a number of times. My number 2 feels the same. Any reason for this anyone please?

ZOOKER
5th Sep 2010, 19:08
Probably due to lack of investment.
Are we talking VHF or UHF?
I don't know how The Military fund their equipment, but if it's like civvy-street, spending money on top of the range RTF kit isn't considered 'sexy'.

chevvron
5th Sep 2010, 19:51
All been done before.
Military kit is made by Philips and is called Mascot. It was originally designed for use in emergancy services (police, fire, ambulance) control rooms and as such was adapted for ATC use with far more telephone lines and RTF channels than it was originally designed for.
One of our techies explained to me that the output voltage was lower than the previous system, hence when you add voltage drop between the tower and the transmitting station, there is insufficient power to push out the full audio spectrum and the highest and lowest frequencies aren't transmitted leading to muffled reception by aircraft.

WorkingHard
5th Sep 2010, 20:10
Thanks, it was VHF. Chevvron, are we likely to see any improvement in VHF RT?

SID East
5th Sep 2010, 21:08
http://http://www.independent.co.uk/news/business/news/big-hitters-eye-1632bn-mod-air-traffic-control-deal-1645221.html

Bit dated but to the point. Assuming this project is safe post-defence review the mil should get some decent comms in the next 10 years!

:ok: