[opendtv] Re: New PrimeDTV PHD-100 OTA STB

  • From: Craig Birkmaier <craig@xxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Tue, 31 Jan 2006 06:38:54 -0500

At 9:09 PM -0500 1/30/06, Albert Manfredi wrote:
>Richard Hollandsworth wrote:
>>In the dozens of spec sheets and app notes that I've read,
>>I've never seen a separate RF/IF Tuner Module just for NTSC.
>>They all show a common RF/IF Tuner.
>Even so, it seems that if nothing else, two demods operating at the same IF
>can create leakage. But also, as long as NTSC is still on the air, and as
>long as we see evidence of co-channel interference between NTSC and ATSC
>stations that are not adequately separated, it seems that a combined
>ATSC/NTSC receiver would be more vulnerable to self noise than an ATSC-only

Why include an NTSC receiver, especially in the boxes that the 
government is going to subsidize? The set to which the box is 
attached most likely has one anyway, and there will be no need for 
the NTSC tuner when the transmitters are turned off.

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