[opendtv] Re: Test today
- From: Tom Barry <trbarry@xxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Tue, 14 Jun 2005 07:33:09 -0400
To over simplify the criteria for success: does this mean that you
can get all of ABC, CBS, NBC, Fox, WB, UPN, and PBS at Mark's
apartment now with digital TV? Or at yours?
I don't even know if affiliates for all of those exist in both
areas but if they all worked I think it would be enough to replace
NTSC there for most people.
- Tom
Tom Barry wrote:
> Bob -
>
> It would seem that except for the confusion on channel 12/33
> (strange PSIP info?) you could get solid reception at Mark's on
> all channels except 30. This would be pretty good.
>
> Do you know if there are any other digital channels known to be
> broadcasting there, or is that all of them?
>
> Generally I'm impressed.
>
> - Tom
>
>
>
> Bob Miller wrote:
>
>
>
>
>>Couple of points first. dbu was just db, my mistake. The B card gives a
>>db figure. The A card has a window for it but does not deliver yet.
>>
>>I have not contacted the parties that gave me these cards. Will tomorrow
>>and will see if they want me to name them. Will do the same for the
>>first receiver.
>>
>>The A card was giving me a false reading of 100. There was another
>>utility that gives me percentage figure. I have no way of saying that
>>the percentage number given by the two boards are equal but they seem to
>>be similar.
>>
>>In Mark's apartment the first 5th gen LG prototype worked even when Mark
>>took the loop antenna off the plant by the window and moved it some feet
>>into the room. He may have placed it on top of hid TV set. He will have
>>to confirm that. But that prototype still worked on all channels some
>>four feet into the room.
>>
>>Today we started with the loop antenna hanging maybe 20 inches from the
>>window on a string at an angle arbitrarily placed. We were getting some
>>iffy results with the A board which we tried first so I moved the
>>antenna to the window and taped it there. This increased signal strength
>>for example on a station getting 71 to 88. So I left the antenna there
>>accept for one test where I moved it to near the top of Mark's TV set.
>>Poor results on the first few stations so quit that.
>>
>>Neither of these cards is as good as the 5th gen LG prototype. Both of
>>these cards are very close to being equal. Mark thinks the last STB we
>>tested with 5th gen LG tech was maybe a little better. I don't think so.
>>It think that LG had a prototype but when they made it into a sellable
>>product it did not measure up to the prototype for whatever reason. I
>>think that the same LG 5th gen Innotech tuner is used in all receivers
>>we have tested so far and in the LG Integrated HDTV sets that got rave
>>reviews in New York. I think they are all probably pretty much equal.
>>That is the other reason I did not bother to test one of those HDTV sets.
>>
>>At Mark's today
>>
>>Channels A B
>> db on B
>>12 (11) 0 ? 82 Solid
>> 24.4
>>
>>28 (4) 93 Solid 100 Solid
>> 28
>>
>>30 0 30-51 no
>>video 13.5
>>
>>33 87-89 Solid ??
>>
>>38 (9) 87-88 Solid 91 Solid
>> 24.1
>>
>>40 93 Solid 99 Solid
>> 26.6
>>
>>44 (5) 94 Solid 86 Solid
>> 23.4
>>
>>45 (7) 71-84 Solid 79 Solid
>> 21.7
>>
>>53 94-96 Solid 100 Solid
>> 33.3
>>
>>56 (2) 75-85 Solid 91-95 Solid
>> 24.4
>>
>>Seems that Analog 11 had two digital stations, 12 and 33. The B card see
>>12 as Channel D11, RF 12 and sees 33 as Channel D11, RF 33.
>>
>>The the B board displays Channel 11 while actually playing physical
>>Channel 12 on the A board that is Channel 33. But there are two physical
>>digital channels at the FCC, 12 and 33. What is what I don't know.
>>
>>When I scan on B I get a 95% reading on 33 but nothing shows up video
>>wise and I cannot chose to watch 33. Nothing shows on the A card for
>>Channel 12 though 33 comes in well. WPIX is very confusing.
>>
>>Tonight I rescan and each time get more channels to show up at home on
>>Roosevelt Island. With the antenna in the middle of the floor I get
>>WNYE 24 for the first time at 0- 21% or 5 db. No video just the
>>indication of signal.
>>
>>Getting WLIW 22 from Garden City LI at 27% 7.5 db no video.
>>
>>Here I am getting excited about 8-VSB reception and realize that in 1999
>>we were receiving COFDM from just north of Garden City in New York City
>>mobile and at a fraction of what WLIW is probably putting out today.
>>
>>Same distance from the city, about 20 miles. Less than a kW of power for
>>the COFDM transmitter and we were not just getting an indication of a
>>signal at 27% or 7.5 db, we were getting video mobile in Manhattan
>>another 1/2 mile from here. In fact the first reception of COFDM in the
>>US by myself was in the street outside on Roosevelt Island driving to
>>Queens where I was supposed to drive toward Garden City till I got
>>something.
>>
>>The fact is I picked up the signal as I drove down main street just
>>outside. Main street runs at a right angle to any signal from Garden
>>City and had buildings 19 stories tall lining the road. Watch the movie
>>Dark Water if you want to see what I mean.
>>
>>It was in that canyon that we first saw what COFDM could do in the US
>>and then over the 59th St. bridge and into Midtown not toward Garden
>>City that we went.
>>
>>So that does tone down my excitement. Sort of like playing with an old
>>decrepit car. It may not be a Maserati like COFDM but it is still fun
>>when you finally get it running.
>>
>>These cards and the last receiver we tested are good enough for a
>>business plan IMO. And I think maybe LG or someone will build a receiver
>>as good as the LG prototype in the near future, a year or so.
>>
>>Bob Miller
>>
>>
>>
>>
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