I would think you would need to do a complete rescan to pickup 11.1 on 11 instead of 18.
Deleting the existing analog and digital channels, then manually tuning to the new RF channel (11) works with some tuners and TVs. If the signal is too weak. Neither a scan or manual tuning will work.

Have been able to get CHCH at about 55% on my Terk HDTVi every day since transition. (Marlee & Roselawn, tenth floor.) Today, after the earthquake it dropped to 38 - 42% and has been pixelating and dropping out no matter where I position the antenna. Wonder if this is coincidence or if something got shifted out of place with the shaking. Has anyone else noticed anything different since the quake? All other channels seem normal.

My big complaint about ch is thier audio is about 6 dB higher than everone elses?

Agreed. My receiver says its DD, but it sure seems like StereoX2 to me. That would explain the increased loudness. Rear speakers almost never get as loud as they are most of the time on CHCH.

Unable to receive CHCH since August 15 on my Terk HDTVa, which is capable of receiving both UHF & VHF signals. Signal strength on my Samsung UN32C4000 is 0DB. And I don't live in Scarborough...

Have you deleted the old channel 11.1 before rescanning?

Since CHCH is using the same TSID for both pre- and post-transition, you probably need to delete the old 11.1 on channel 18 before it will recognize the new one on channel 11.

Excellent point, TVLurker! Some devices have 2 types of scans - "add new channels" and "full scan" (wipes clean and starts fresh). I tried the "add new channels" first and while I thought I was on 11.1/11.1 I was actually on 18.1/11.1. My signal meter showed reasonable signal on RF11 (and of course nothing on RF 18) so I went ahead and did the "full scan" and everything worked again! :cool:

I tried several times doing an "Add Digital Channels" after the CHCH switch and got nothing. It wasn't until I did a "full re-scan" that I was able to pick up the "new" 11.1. So the Sony Bravia must delete the previous info while doing that type of re-scan.

I have also experienced some odd behaviour with certain Buffalo channels around the same time of the CHCH switch. I am sure that it has nothing to do with it and may just be coincidence. As an example, I lost WNYO 49.1 but the meter showed it at 13.72 bB but with over 200 errors! On a whim I did an "Add Digital Channels" and not only was it back but I also picked up the sub-stations of 49,2,3,4 for the first time. Signal for them was 38% and 20.74 dB. Seems like we're in for some interesting times with this changeover. ;)

. As an example, I lost WNYO 49.1 but the meter showed it at 13.72 bB but with over 200 errors!

That makes sense, You need at least 15.7 dB SNR to decode ATSC.

On a whim I did an "Add Digital Channels" and not only was it back but I also picked up the sub-stations of 49,2,3,4 for the first time. Signal for them was 38% and 20.74 dB.
Didn't 49 change from 34 back to 49 in 2009? Maybe you just rescanned in a "different" channel, and you had the old 34 in there before.

Could have been WEAO by DX, perhaps.

- Trip

@tvlurker - According to the diagnostics screen/info both times the channel was listed as 49.1 and the physical channel as 49. As an example, on the same screen I can see that 9.1 is physical 40 and 11.1 is 11. After the add channels scan today there also were no errors displayed for 49.1.

I know that some stations have been messing around with things because for the longest time I could only get 7.1 (WKBW) by tuning to 38.3. During that time 7.1 was showing a religious station and 7.2 was ThisTV. That was before the people here advised that I should have a tuning meter and my finding it this past week. My point in bringing this up was perhaps to suggest that these issues with CHCH may have alternate possible resolutions.

I also still can't understand why CHCH comes in the strongest with the antenna rotated and pointed to due north when it should be more west of my location. Do digital signals reflect (from some obstruction that I am not aware of)?

@Trip - I would presume that you refer to WEAO in Akron, Ohio? It's 186 miles from me as the crow flies and at 220 degrees (south-west) while rf49 comes in at 178 degrees and is a tiny bit east of due south.

It's also on RF-50, so that can't be what you saw.

It's possible that you scanned it in both with (49-1, 49-2) and without (49-3, 49-4) PSIP, though I have no idea why that would happen.

- Trip

It's possible that you scanned it in both with (49-1, 49-2) and without (49-3, 49-4) PSIP, though I have no idea why that would happen.

When I could no longer get CHCH I did a number of "Add Digital" scans at various compass points. I guess that it's not impossible that the software in the TV messed things up. Still, could the Akron signal have reached this far!

AJB01, what kind of antenna are you using? If it's a UHF antenna, then its forward gain is for UHF. The best gain for VHF may not necessarily be in the same direction as for UHF, particularly if the antenna has a rod reflector screen.

AJB01, what kind of antenna are you using?

The antenna is a CM4228 that I got a little over a month ago. It's mounted on a 30' tower with a rotor. It's a 8 bay flat screen type that replaced our ancient Channel Master that was 10' X 9' monster. :)

Still, could the Akron signal have reached this far!

In theory, yes, during an atmospheric event, particularly given the recent WQLN outage.

It wouldn't be reliable, however.

- Trip

People who are having trouble in getting CH since the transition...well it may not be because of the reduced ERP. Another member here, who uses MediaPortal like me on his HTPC, started a bug report in the MediaPortal forums. One of the developers reports that CH is using a wrong value PMT PID assignment in relation to the ATSC protocol. I'm wondering if by using this incorrect assignment, some tuners are reporting a non-valid signal, hence not picking up the channel.


My TV's tuner seems to support this claim. I don't have a PC with ATSC tuner card but my TV seems to behave differently when scanning CH 11. I mean, in this case frequency offset stays stable 0 or 1, while on channel without any signal it jumps up and down all over the place.

Have you deleted the old channel 11.1 before rescanning?

On my 09 model Panasonic plasma I actually had to 'reset back to factory' for the
new 11-1 to appear.

I guess I will have to do that again next week.

When CHCH Hamilton returned after the outage last night, the signal is significantly weaker for me than it was prior to the outage. EIT and ETT are missing from the PSIP, so no guide data.

PSIP, so no guide data
They had guide data? :confused: Never seen more than "News" to describe what 's on :p

When CHCH Hamilton returned after the outage last night, the signal is significantly weaker for me than it was prior to the outage. EIT and ETT are missing from the PSIP, so no guide data.
RF 11 seems to be back to "normal" now - do ATSC transmitters need to "warm up" after an outage?