Can anyone tell me what DTV channel to tune my tv to for Omni 1, Omni 2, in the Cornwall region - it seems like Omni 1 is (27), Omni 2 (66) based on the thread, although their website says for Ottawa Omni 1 is (60) and Omni 2 is (14)???

14 and 16 are their analog channel numbers. 27 and 66 are their DTV physical channel numbers. Good luck receiving them in Cornwwall. Many people here in Ottawa are having dificulties.

roger1818,

of course! thanks.

yes I hear they are difficult, not my top priority, Iim still trying to get the Vermont ones!

I'm no expert but when I checked your TV Fool report it looks like the earth's terrain is in the way between Arnprior and the tower in Manotick. You don't have line of site to the tower that is broadcasting the two digital Omni channels. But you do have a clear view of the Camp Fortune tower that is broadcasting digital CBC English and French along with Sun-tv (only available in digital over the air).

Looking at his report, he only used an antenna height of 10ft. If he gets his antenna further off the ground, he might be able to get Line Of Sight (LOS) to Herber's Corners (Manotick). TV Fool used to give you the elevation requried for LOS, but they don't seem to do that anymore.

Normally I don't trust TVFools Canadian results, but I gather the Ottawa broacasters have been corrected manually.

14 and 16 are their analog channel numbers. 27 and 66 are their DTV physical channel numbers. Good luck receiving them in Cornwwall. Many people here in Ottawa are having dificulties.

Roger made a Rogers cable ffreudian slip.
14 and 16 are the cable poitions for the OMNIs on Ottawa Rogers Cable.
The analog channels are 14 for OMNI2 and 60 for OMNI1, the digital, as everyone has quoted, are 27 for OMNI1 and 66 for OMNI2.
Unlike most other stations, the OMNIs identitify their digital stations by the physical digital channel number rather than the old analog channe numbers. Note that SunTV in Ottawa is like this too, mostly because Quebecor chose not to implement their analog channel license in Ottawa.

Roger made a Rogers cable ffreudian slip.
14 and 16 are the cable poitions for the OMNIs on Ottawa Rogers Cable.


Strange that I did that. :confused: I didn't even know that the OMNI's were on 14 and 16 on Rogers (I haven't had cable for 7 years and even then only had it for 6 months). Thanks for catching that though. :)

Looking at his report, he only used an antenna height of 10ft. If he gets his antenna further off the ground, he might be able to get Line Of Sight (LOS) to Herber's Corners (Manotick). TV Fool used to give you the elevation requried for LOS, but they don't seem to do that anymore.

Normally I don't trust TVFools Canadian results, but I gather the Ottawa broacasters have been corrected manually.
I tried various antenna heights on the TV Fool site for Arnprior city level which may be a bit off from where he's at and only acheived line of site at 100 feet. I don't have any economical suggestions to get his antenna up there.

roger1818,


good news, much to our surprise, I'm getting Omni#27, from east of Cornwall, actually near Lancaster!- and no sign of Omni#66

is something changed with Omni's transmission recently, or was that a fluke! im at 14 ft, looking thru a tree within 5 ft, and more than 80 miles away...

Ok, I got a better antenna. It was actually an antenna I made myself, a UHF one. I can now get HD-CBC, HD-RC, and it detected Omni2, but I cant receive it. Currently its about 2 meters off the ground. I rotate it to wards whatever I'm trying to watch. When I spin it towards herbert corners, I can't get Omni 1/2 in HD. at 7.1 kilowatts, I' not sure if it's possible.

I could maybe shove it in my attic?

BTW: When watching CBC, I get a 27:1 SNR ratio.


Taylor


EDIT: Roger, how is the reception? I'm in Russell, (much closer) and get nothing.

I could maybe shove it in my attic?

Yes that may be something to try. Unless you have a metal roof. My experience with OMNI 2 is moving my antenna from the second floor to the attic improves the receiption from barely detecting it to a SNR of 27. I entered coordinates for Russell and the NM for OMNI2 is a good 6 dB better when compared to my spot in Kanata - So unless there is some huge obstruction in front of you that TVfool dont know about, I am sure that it will be quite possible.

Also ensure that your antenna has some gain for channel 66 since some of the post transition antennas have a relatively poor gain at frequencies above channel 51.

Gain? As in something a signal amp could help with?

Gain? As in something a signal amp could help with?
No. RamKat is talking about antenna gain. Amplifiers only help when you have a clean signal to start with.

In the end an antenna mounted outside is the preferable way to go. Stampeder reckons mounting an antenna to a tree will create other problems in the digital world due to the tree moving - so that may not be advisable.

You are getting the English CBC but not the SUN - do you get the French CBC @ch 22? If your SNR for E-CBC is 27 then the SNR for the Fench CBC should be about 24.5 (if my figures are correct and assuming a flat response curve for your antenna and the attenuation of the house walls) My napkin calc for SUN TV shows an expected SNR of about 10 with the above assumptions. My own receiver starts to drop out below about SNR of 15 - which maybe explains why your reveiver detects it but don't lock. By just going outside with your antenna should lift SUN TV to about the same levels and higher as your current E CBC receiption - give it a go

Yup, Radio-Canada is about 24.5. For Sun, I'm getting about 10-17, with 11000 uncorrectable errors (a second, I dunno how my software calculates it).

For Sun, I'm getting about 10-17, with 11000 uncorrectable errors (a second, I dunno how my software calculates it). That confrms - just take your antenna outside for a test and I am sure you wil get lock on SUN TV. Once you get that lock then point the antenna at HC and try for OMNI1 and then for OMNI2. If you don't want to (are not allowed to) mount the antenna outside and you have lots of SNR to spare you can try the attic of the garage as mounting location. As I have mentioned above, my (limited) experience is that just going from inside the house to the attic makes a huge difference provided that your attic is not covered by a metal roof or that the path between the tower and the antenna is not obscured by another part of the house.

Actually, the first place I tested it was outside on my netbook. The reception wasn't actually any better. Now it's just meters away from that spot, near a window, with a clean site towards both towers.

So that it was outside where you got the SNR of 27 for CBC-E?

No, inside. I only used it once outside after building it, but rain forced me to bring it in.

Then I am out of advise - the only options that I see are either to go much higher with your antenna or to look into building one of the antennas that is suggested on this site. Either a single bay GH or one of McLaps 4 bay bow ties. I had good results here in Ottawa with this antenna
http://www.digitalhome.ca/forum/showthread.php?t=95898

Edit: TaylorTech: Post the dimensions that you have buildt your antenna to in the modeling thread, then I will have a look at it over the weekend

I am looking to receive local VHF (Camp Fortune), and hopefully get Herberts Corners AND US. If it takes 2 antennas that's ok. Internal antennas do not work very well on my ancient Sony rear projection (480p simulated!) with an analogue tuner. I also realize that receiving Global is a separate issue. I plan to mount the antenna(s) on my chimney which is approximately 35 feet high. I am in Kanata and there are no visible obstructions to the north or south. Any brand name choices and where I can locate them would be greatly appreciated.

All VHF-Hi and UHF channels from both CF and HC is certainly receivable from Kanata - especially at 35 ft. The issue with Global is that you need a FM Trap to attenuate the FM signals next to it.

If you are handy you can construct your own antenna fairly easily with materials you can get at Home Depot - lots of advice here

http://www.digitalhome.ca/forum/showthread.php?t=81982

I am close to All Saint High School and have I received both towers clearly with reflectorless (read easy to construct for less than $10) versions of the Gray Hoverman with NAROD design mounted in my attic (24 ft).

I have not tried any US stations yet - their NM is just too small at my location