[opendtv] Re: Digital radios outstrip analogue

  • From: Craig Birkmaier <craig@xxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Wed, 2 Mar 2005 14:01:43 -0500

At 1:26 PM -0500 3/2/05, Bob Miller wrote:
>What is the history of the 30 ft mast test? I have thought it was a
>standard FCC test during analog years.

Correct. And thus, since this services was to replicate NTSC service, 
this was assumed by all to be the proper test.

>
>Was it part of the design of 8-VSB? Did the FCC incorporate words to the
>effect that a 30 ft mast test was integral to whether a modulation was
>acceptable?

Not exactly.

The ATTC assumed this during the testing process, although there were 
a few indoor tests as well.

The FCC got into it when they did their own reception tests in the DC 
area after Sinclair raised the stink about COFDM. The FCC test regime 
was to send out trucks with 30 foot mast antennas.

Regards
Craig
 
 
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