[opendtv] Re: 20060912 Twang's Tuesday Tribune (Mark's Monday Memo)
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Thu, 14 Sep 2006 17:22:04 -0400
Bob Miller wrote:
> First I would not recommend using what Freeview is using. The
> average transmitter power in the UK is 3 kW ERP. Can you imagine
> that power level with 8-VSB?
Sure. In 2000, in Hong Kong, they used only 100 W with 8-VSB. Worked
amazingly well.
Low power requires receivers with good sensitivity and a scheme that
supports low C/N margins. In the presence of multipath, it helps to have
a scheme where what small margin there is doesn't get eaten up in trying
to compensate for multipath.
Looking at the specs of the better new receivers, 8-VSB should do very
well at low power levels, compared to the competition. Precisely because
of the above two points.
> Just do a search for Freeview on Ebay. 565 hits many of which
> are for laptop and portable receivers.
Proving what? Only that people there choose OTA and people here prefer
to get suckered into subscription schemes.
Bert
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