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Old 03-08-2011, 04:05 PM
jhalphen's Avatar
jhalphen jhalphen is offline
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Join Date: Feb 2007
Location: Paris, France
Posts: 595
Hi Wa2ise,

Yes, European DVB-T uses COFDM carrier coding but the number of carriers may vary (UK vs mainland Europe for instance).

My reception is A-OK with a rooftop antenna, but indoors with a handheld 3" DVB-T receiver on a 10" whip antenna, ahem, not so good, yet i am located less than 5 miles away as the crow flies from the Eiffel Tower powerhouse. Well today is only day one of all DVB-T broadcasts and maybe the transmitters have not yet been powered up from 15KW EIRP to the planned 50 KW. Wait & see...

As a 57 year soon "old codger" i have a pet peeve: i believe that good RF engineers have deserted consumer electronics. I have tested many DVB-T receivers and Wi-Fi TX/RX and in my opinion, all have the sensivity of a grounded anvil.
I remind youngsters that in 1968 i was receiving the Eiffel Tower 80 miles away, VHF Band III, on a Sony TV9-306UM, built-in whip, 819 lines, car battery power, in the midst of a field while having a picnic.

I have never seen better sensitivity since, and all this in spite of noisy 1960s transistors and a 14 MHz wide TV channel.

Shame on today's RF designers...

Best Regards

jhalphen
Paris/France
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