[opendtv] Re: Test today
- From: Tom Barry <trbarry@xxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Tue, 14 Jun 2005 07:10:10 -0400
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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