Here comes the UHF Channel "Repack" for OTA - Page 6 - Canadian TV, Computing and Home Theatre Forums

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post #76 of 176 (permalink) Old 2016-04-24, 03:31 PM
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Not sure about the vacant channel plan. We've already seen how badly they missed with some of the ATSC channel coverage contours. It may impact distant channel reception in a bad way.
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post #77 of 176 (permalink) Old 2016-04-24, 06:43 PM
 
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6 locals GTA above 40.

Get your VHF antennae ready.Any reason CN tower stations cant be in a row;like 17,18,19,20,21.22.VHF performs poorly in city environment.

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post #78 of 176 (permalink) Old 2016-04-24, 10:22 PM
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Technically, there is no reason for co-located channels. We had 18, 19, 20 here for several months. Channels that are more widely spaced can suffer from adjacent channel interference.

Politically and economically it would be a tough sell. It could force channel realignment for hundreds of miles on both sides of the border. That would be expensive, especially for independent stations.
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post #79 of 176 (permalink) Old 2016-04-27, 02:07 AM
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ATSC can handle it, as Seattle/Tacoma proves

The KOMO (ABC 38.1) tower is situated right in between KING (NBC 48.1) and KIRO (CBS 39.1) in Seattle, all within the same 2 city blocks. All three have been broadcasting with subchannels while blasting out 1+ MegaWatt signals each since about 2000, proving that ATSC does not exhibit issues with co-location or adjacent channels when all is properly configured.

Look carefully on the following Google Maps image for all three towers: https://www.google.com/maps/place/47...s0x0:0x0?hl=en
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post #80 of 176 (permalink) Old 2016-04-27, 12:44 PM
 
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We are still a LONG way away from any changes happening, the auction's started and will finish, they hope, by early next year then they've set a 39 month transition period which could be extended. By that time ATSC 3.0 will be set in stone allowing a LOT more content to be delivered on the reduced frequencies.
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post #81 of 176 (permalink) Old 2016-04-27, 05:54 PM
 
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Repack

The realignment will occur before any Canadian station is ready for ASTC 3.0.We should take the opportunity to do the re packing so as to use the remaining spectrum more efficiently.Grouping stations adjacent to each other allows more stations .

Attic CM 4248 at Buffalo,M4 at Buffalo.VHF yagis at Toronto .
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post #82 of 176 (permalink) Old 2016-04-29, 12:25 PM
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Looks like as mentioned previously... it's the end of the month and we now know what the new band will look like..
If I am reading this right, looks like 31 thru 51 are gonna be history. 126 MHz / 6 = 21 channels

http://transition.fcc.gov/Daily_Rele...A-16-453A1.pdf

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post #83 of 176 (permalink) Old 2016-04-29, 02:00 PM
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The BAND PLAN clearly shows Ch29 will be the highest TV Channel still available....of course, this is all PRELIMINARY data, subject to what REALLY happens once people have to come up with COLD, HARD CASH....

Antenna Simulations, Overload Calculations, etc: http://imageevent.com/holl_ands
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post #84 of 176 (permalink) Old 2016-04-29, 02:36 PM
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I think the re-pack will include 30-35 in some locations while others will only go to 29.
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post #85 of 176 (permalink) Old 2016-04-29, 02:48 PM
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I really wonder how this will affect the Buffalo OTA market?
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post #86 of 176 (permalink) Old 2016-04-29, 03:01 PM
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There is a one channel gap to reduce interference between TV and cellular applications. That's currently channel 51, which receives no new TV assignments but still has stations with legacy assignments operating. It looks like channel 30 will be the new buffer. It may be assigned for other uses. Channel 37 is currently reserved for radio astronomy use.

That's quite a spectrum grab. Since 1982, this makes a total of 54 of 83 channels that have been taken away. Only 17 UHF channels and 13 VHF are left. Some markets are going to get very crowded. The New York market has about 46 OTA station assignments (not including subchannels.) They are going to be squeezed into 30 assignments before ATSC2 and ATSC3 are even available to help ease the transition. I've got to wonder whether this transition is being driven by a money grab by wireless providers and politicians rather than actual need. 90% of the current cellular wireless spectrum in the US is owned by DSL and cable TV and internet providers so it's no secret who will profit the most.
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post #87 of 176 (permalink) Old 2016-04-30, 09:21 AM
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Quote:
Originally Posted by holl_ands View Post
of course, this is all PRELIMINARY data, subject to what REALLY happens once people have to come up with COLD, HARD CASH....
This is true, final result all hinges on how much the wireless industry is willing to put money where their mouth is... Like a poker game, one guy places a bet, now we wait and see if the guy across the table calls or raises... (or in this case maybe they "lower", trying to lowball)...

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post #88 of 176 (permalink) Old 2016-04-30, 11:10 AM
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A lot of OTA broadcasters will have to double-up which shouldn't be an issue with ATSC 3.0, and using HEVC. What happens here in Canada is anyones guess though, we'll never see ATSC 3.0.
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post #89 of 176 (permalink) Old 2016-05-02, 02:55 PM
 
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That repack for a channel 2 - 29 sounds a little crazy. I figured a repack up to channel 36 was something that was going to be more realistic. We'll see what happens. There will be a new government in place by the end of this year in DC.

Some of this repack can be done though.
Some companies own two stations in markets. Example, in Ottawa, Bell owns CJOH (13) & CHRO (43), RNC owns CHOT (40), CFGS (34), and CBC/SRC own CBOT (25) & CBOFT (9 & 33), plus Rogers owns three (17, 20, 27). All those entities should be forced into owning one physical channel. And all can offer two streams of 720p with little to no problem. When ATSC 3.0 gets put into place, I'm sure they can get that back up to 1080i for each stream.

CJOH (13.1 - CTV, 13.2 - CTVtwo) rf13
CBOT (9.1 - CBC, 9.2 - SRC) rf9
CHOT (40.1 - TVA, 40.2 - V) rf 34 or 40 for now
CFMT (20.1 - Omni 1, 20.2 - Omni 2) rf20

Plus analog re-transmitters that effect digital signals such as CJOH 8 Cornwall should be shutdown I'm sure it screws up rf9 in Ottawa, and rf7 in Watertwon, NY

Some stations have a operations agreements in the US. In the Burlington - Plattsburgh market WVNY (22.1 - rf13), and WFFF (44.1 - rf43) have an agreement. Basically WFFF runs WVNY. Local news etc. Sorry, that actually is one station.
Somebody will have to sell one to the other, or do a stock swap of some sort so that it's actually 1 station with streams (44.1 - Fox, 44.2 - ABC)

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post #90 of 176 (permalink) Old 2016-05-02, 04:52 PM
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Most Canadian markets will not be adversely affected. They simply have too few stations for it to be an issue and they are too far from the border for US stations to be an issue. The GTA area will be affected due to the number of stations in Toronto and nearby Buffalo. I'd guess that the use of directional antennas will be increased in these markets. Station power will probably also be reduced in some cases. That will make it more difficult to pick up US stations in Canada and visa versa. That's even without the increase in co-channel and adjacent channel interference. I also wouldn't be surprised if a few marginally profitable station owners took the buyout and shut down permanently.

ATSC2 and ATSC3 are not likely to be ready in time for this transition. The FCC and IC haven't even made any ruling on their adoptions and the ink is barely dry on ATSC3. It will likely be 10 years before stations switch to NTSC3. Unlike the ATSC switch over, there won't be many spare channels for simultaneous broadcasting either. It's going to be a mess for OTA enthusiasts and broadcasters in the short term.
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