Elevation in the Toronto GTA area and S. Ontario - Canadian TV, Computing and Home Theatre Forums
 
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post #1 of 19 (permalink) Old 2006-07-10, 11:59 AM Thread Starter
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Cool Elevation in the Toronto GTA area and S. Ontario

I know why most of the guys depending on where you live get poor performance.

I was away on holidays last week in the US for 10 days and on my drive back was checking the elevation using my laptop and Streets and trips 2006 with the gps locator.

I noticed that in the Fort Erie, Niagara, St Catharine, Welland, Grimsby, Stoney Creek area the elevation above sea level is only 140-180' on average.

Oakville was also low around 280' in elevation on average.

Mississauga went up into the mid 300'

Along the 401 from 400 to 404 was 410-460'

Sheppard and 404 was 460'

404 and Finch and Steels was 460-480'

In Markham around Mcowan and 14th where my home is reads 532'.

I know as you head north of Hwy 7 the elevation gets even higher.

I bet at my dads house, he is a good 60 to 80' higher than me that is why he is able to get such strong signals from Buffalo with a 4221 and its not even mounted 18' off the ground.

Last night check and WB 49-1 is stil coming in strong. I know once the weather gets warm above 70'+ even if its not a dx day I can get a good lock on WB49.

Elevation makes a difference. Ohh only if everybody was as lucky as tricky to mount a impressive tower like his.

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Last edited by Yaamon; 2006-07-10 at 12:06 PM.
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post #2 of 19 (permalink) Old 2006-07-10, 12:39 PM
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Quote:
Originally Posted by Yaamon
I was away on holidays last week in the US for 10 days
I was wondering what happened to you! I hope you had a great time.

I wonder if someone has a link to an elevation map of GTA? I'll see what I can find.



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post #3 of 19 (permalink) Old 2006-07-10, 01:32 PM
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A search for topographical maps should find what you want, although you may have to pay.

When I lived in Calgary my lot went through the 4000' elevation, but I couldn't receive anything...

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post #4 of 19 (permalink) Old 2006-07-10, 03:17 PM
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Geographical relief and topographical features of S. Ontario

I cut and pasted these maps out of a free NASA satellite composite image. They'll at least give an excellent view of geographical relief and topographical features.

This one gives a very interesting partial explanation for the carrying-power of some not-really-powerful Detroit stations far into Southern Ontario:



Zoom-in of Toronto - Buffalo and surrounding areas:





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post #5 of 19 (permalink) Old 2006-07-10, 03:34 PM
 
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I know here in St Catharines I'm at 185 on my GPS unit.

My signal strength sucks compared to Toronto people. But if Rochester (85 miles) is at the same elevation as me then why can't I receive their OTA everyday when I bet Yaamon's parent's house is 90+ miles from South Buffalo.
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post #6 of 19 (permalink) Old 2006-07-10, 04:36 PM
 
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Wink

Another method of determining the elevation is to use Google Earth. As you move the pointer, you can see the elevation of the area under your mouse pointer.
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post #7 of 19 (permalink) Old 2006-07-10, 05:07 PM Thread Starter
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Quote:
Originally Posted by dsspredator
My signal strength sucks compared to Toronto people. But if Rochester (85 miles) is at the same elevation as me then why can't I receive their OTA everyday when I bet Yaamon's parent's house is 90+ miles from South Buffalo.
Good guess, from remote central web site Markham is 91 miles from the south Buffalo transmitters. Iam sure that the south end of Markham too.

Elevation is the key in receiving a strong and stable ota signal.

Even on Stouffville further north, because of the higher elevation using a 4221 pulls in all channels 92%+ without a preamp.

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post #8 of 19 (permalink) Old 2006-07-10, 05:22 PM
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I checked my elevation on line.It shows I am at 682 feet and Lake Ontario is 246 feet.This is why I have great reception of the Buffalo stations.The Rochester towers are very low and are no match for the South Buffalo towers in range.The Buffalo south towers are on the high ground on Stampeders map

Attic CM 4248 at Buffalo,M4 at Buffalo.VHF yagis at Toronto .

Last edited by rob50312; 2006-07-10 at 05:31 PM.
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post #9 of 19 (permalink) Old 2006-07-10, 06:51 PM
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Google Earth puts me at 518' which explains why I get all networks from Buffalo and TO (except CITY and Global) with a $25 indoor Philips antenna.

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post #10 of 19 (permalink) Old 2006-07-10, 09:45 PM
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Remember that elevation is only one part of it. The originating stations have differing transmitter broadcast patterns in the first place, so some areas may get good signal while others might not, even though all else is almost equal.



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post #11 of 19 (permalink) Old 2006-07-11, 03:15 PM
 
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im at 530'.... cm4221 at 5m above the ground and i get all toronto stations... i get fox, nbc and upn... cbs never comes in.... pbs and abc come once in a blue moon
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post #12 of 19 (permalink) Old 2006-07-11, 08:10 PM
 
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http://www.earthtools.org/

has an overlay of Google maps that shows contour lines (just click on the "Contour" button in the upper right of the map)

Enjoy!
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post #13 of 19 (permalink) Old 2006-07-11, 09:16 PM
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A couple of Canadian government mapsites

Quote:
Originally Posted by stampeder
I wonder if someone has a link to an elevation map of GTA? I'll see what I can find.
Atlas homepage http://atlas.nrcan.gc.ca/site/english/index.html Click on "View our new topographic maps". The interface takes a bit of getting used to. It's not as slick as Google, and it can be slow at times depending on traffic, but it is nice.

Another useful one, if you're searching for the lat/long of an obscure little town, is http://geonames.nrcan.gc.ca/search/search_e.php
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post #14 of 19 (permalink) Old 2006-07-12, 01:41 AM
 
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Quote:
Originally Posted by Yaamon
Elevation is the key in receiving a strong and stable ota signal.

Even on Stouffville further north, because of the higher elevation using a 4221 pulls in all channels 92%+ without a preamp.
I'm in Stouffville, & Google Earth says I'm at 901' above sea level. Comparing Google Earth, to the images shown by Stampeder here, it would seem that Stouffville is still on the south side of that prominent ridge that's running east-west 'just' north of lake Ontario. There's still more elevation available to those living further up the ridge, but the increased distance from the US transmitters would probably become prohibitive.

Anybody further up the ridge, but not beyond, have results to share?

I get all the TO & Buffalo digitals, except for WB49. I also get a couple of rochester digitals very rarely. Going to analog, I can add most Rochester, & Erie PA channels to things I get some of the time. Stationary attic mounted 4221.
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post #15 of 19 (permalink) Old 2006-07-18, 02:24 PM
 
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Quote:
Originally Posted by x4mer
Anybody further up the ridge, but not beyond, have results to share?

I get all the TO & Buffalo digitals, except for WB49. I also get a couple of rochester digitals very rarely. Going to analog, I can add most Rochester, & Erie PA channels to things I get some of the time. Stationary attic mounted 4221.
I wondered if my parents would be able to pick up anything in Newmarket and looking at the composite map above it looks like Newmarket is North of the ridge. But checking elevation puts them at 882 which is only 19 feet lower than you. However folowing yonge street to the South I get 1079 feet just North of Bloomington Rd. which would shadow their location. This seems to be the peak of the ridge (crossing Yonge St. anyways). This means you are over the ridge as well.

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