: AB - Calgary, Lethbridge, Southern Alberta - OTA
2011-07-16, 05:19 PM
For tracking purposes, I thought that it should be noted that since July15th CTV is just displaying a banner on channel 36 that channel 29 is at now at full power and to rescan to get it.
Doesn't help me much as for some reason I can get 36 a little stronger than 29?
van der Decken
2011-07-17, 02:11 AM
Hmm. I've completely lost 29/4-1 tonight here in Huntington Hills. No signal at all. I'm seeing the banner on 36-1 but that's it.
2011-07-17, 02:26 AM
Reception of Channel 29 is OK/normal here down in Hillhurst/West Hillhurst …
van der Decken
2011-07-17, 02:37 AM
Hmm again. I hauled out my ATSC converter box and that's seeing 29/4-1 just fine. But my TV refuses to admit that it's there. I wonder what's up? Seems very coincidental that it happened right around the time that 36 switched over to the announcement.
2011-07-17, 01:00 PM
van der Decken, what is the total cable length when you add up the run from the antenna to the TV? If you are not running a preamp the total line loss may be too high for your TV to get a proper lock even though the converter box does.
Also do you have Line Of Sight to the Broadcast Hill towers? Please post your TVFool as well (Step #7 in here: http://www.digitalhome.ca/forum/showthread.php?t=125161)
van der Decken
2011-07-17, 11:04 PM
Whatever the problem was, it's fixed itself. This morning I did a scan and it didn't pick up 29, but after another scan this afternoon all is good. Shrug!
2011-07-18, 04:08 AM
I'd still like to know what the situation is for the benefit of other members in your area, so let us know the answers to those questions please. :)
van der Decken
2011-07-19, 12:06 AM
stampeder, I think my setup could best be described as "there's no way that's ever going to work". And yet it does. :)
As TvFool (http://www.tvfool.com/?option=com_wrapper&Itemid=29&q=id%3de3b2a0a6def632) shows, I don't have line of sight to any of the transmitters. I don't know the exact cable length from the antenna to the TV but it's likely in excess of 50' -- I reused the cable that was already in the house (so it runs from the 2nd floor to the basement and then back up to the 1st floor again). The "antenna" is a simple indoor UHF loop sitting in front of a second story window, and there's a tree right in the way on the neighbour's lot. The only reason this whole Rube Goldberg mess works is an el cheapo amplifier that's right beside the antenna.
Believe it or not, I've had zero problems with it since installing it last fall up til this weekend. If it hadn't been for 36 going to a fixed banner, I would have chalked up the 29 problem with the tree finally getting leafy enough to be a significant factor. And now I think that probably is the case. I'm still having intermittent problems with 29. Most of the time it's fine. The only time I'm seeing problems is when I first change the channel to it. Then, it sometimes takes up to a minute to get signal lock. But once I'm on the channel, it's fine for as long as I've watched anything. So I think I probably made things worse by rescanning the channels the first time. I then just had to keep rescanning until I got lucky and I hit a quick signal lock interval. The lesson here is I should leave well enough alone! ;)
2011-07-19, 12:18 AM
You're less than 10 miles from the transmitter. You could stick a piece of wire in the coax connector and probably get everything! lol
Must be the TVs tuner acting up a bit?
Nothing wrong with re-using the houses wiring, as long as it's at least RG-59, RG-6 would be better.
BTW I'm using a FM rectangle loop 65+ km from transmitters with good luck. I realize FM is way off UHF but still. From your distance a 2-bay bowtie would be ideal...
2011-07-19, 02:57 AM
Calgary is very hilly up in the Huntington Hills area, poutanen... ;) If he's in the east side of Huntington Hills then there's definitely a Line of Sight problem, or if he's up near the NW corner there is Nose Hill to contend with, so I can sympathize with his concern about lack of LOS given that he's using an indoor antenna. Anyone with a good outdoor antenna in those areas will be fine.
2011-07-19, 03:25 AM
Yeah I'm actually moving to Airdrie. Compared to the distance from Grimsby to the CN tower, and the trees and long distance to the states from Grimsby, I just figured anything within 45 km or so to the transmitters should be butter easy.
I guess the transmitters in Calgary are that much lower in elevation vs. the CN tower that things like nose hill could get in the way? :o
2011-07-19, 03:31 AM
In Grimsby terms, think of the base of the Niagara Escarpment and how Buffalo stations get messed up there, and you have an idea of what happens in some parts of Calgary. It could be worse: Vancouver and Seattle are horrible for signal shadows caused by hills.
BTW Airdrie is further north of the low valleys at the north end of Calgary so reception will be excellent there. :)
2011-07-19, 04:46 AM
@poutanen: It also matters on which part of Airdrie you'll be living. Although both east and west sides of Airdrie are mostly LOS to Calgary's transmitter sites, it seems signal levels are stronger on the east side, if propagation maps on TV Fool are to be believed.
2011-07-19, 12:25 PM
van der Decken in your situation is there any chance of putting up an outdoor antenna? Your reception would be excellent if you could.
van der Decken
2011-07-20, 06:37 PM
van der Decken in your situation is there any chance of putting up an outdoor antenna? Your reception would be excellent if you could.I've looked at it and I may yet try something mounted outside the window. A tower wouldn't help much given the geometry (neighbour's tree and Nose Hill). I think the airport might object mildly if I put one up that was high enough to make much of a difference! ;) If the only glitch I'm going to have is 29 not locking up instantly on the TV in the summer, I'm content.
2011-07-20, 06:55 PM
I think you might have misunderstood me :) but with an outdoor antenna just mounted on the roof your reception should be fine even with the Nose Hill effect. The attic is costing you a lot of signal.
2011-07-20, 09:47 PM
van de Decken - I have to agree with Stampeder. If you try installing a good quality antenna somewhere above roof height and clear of other obstructions I'm sure that you will see the benefits on all channels (See the antenna chart V8.0). http://www.digitalhome.ca/forum/attachment.php?attachmentid=824&d=1307813411 e.g. A DB-8 may be more than adequate to your needs.
If you still feel that your attempts are challenged from an elevation standpoint, you can try a DMX tower but this shouldn't be necessary.
2011-07-25, 04:00 AM
I know I'm in Edmonton but this post pertains to Calgary.
Was doing a digital channel search 20 minutes ago to see if Global Edmonton has a sub yet and noticed my TV stopping on 29, 41 and 49.
Thought nothing of it till I went and checked the signal strength bar for each channel. The level was bouncing as high as 15% This can only mean one thing: the signal was just strong enough for my TV to recognize the 8VSB pilot and make out some signal.
Meanwhile, Calgary FM's are coming in clear up here and I can get CBC on channel 22 analog no problem.
It's a hell of a night for DX'ing.
update: 9:45 AM - well it's happened. I have verified indoor reception of 29 CFCN in Edmonton and have the pictures to back it up. Incredible. The signal peaked at 50%!!
2011-07-28, 12:34 AM
Receiving CISA-HD Lethbridge on four TV's, all with indoor antenna, two with simple rabbit ears. My location only 4.1 miles from the transmitter, signal strength a disappointing 30-50%.
2011-07-28, 01:29 AM
How are your rabbit ears deployed? They should not be in a V shape, but set horizontally.
For Channel 7, both sides together should add up to 84 inches (each dipole @ 42 inches).