Channel Master OTA Gear & Antennas - Page 15 - Canadian TV, Computing and Home Theatre Forums

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post #211 of 655 (permalink) Old 2005-11-16, 07:57 PM
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Quote:
Originally Posted by spmarceau
Now, for an attic install...
AAARRRRGGGGHHH!!!! See this post if you really want to know how I feel about attic installations:

http://www.digitalhomecanada.com/for...19&postcount=1

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post #212 of 655 (permalink) Old 2005-11-16, 09:04 PM
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Quote:
Originally Posted by spmarceau

Now, for an attic install, whats the width (or height whatever is smaller) of a 4228?
It is 39" X 36 1/4" to be precise.
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post #213 of 655 (permalink) Old 2005-11-16, 10:37 PM
 
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Thanks Yaamon, I am in the Islington and Eglinton area.
I definitely have trees south of me about 40 feet away from where the antenna might be place, the tree is easily 25 ft taller than the house.
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post #214 of 655 (permalink) Old 2005-11-16, 11:41 PM
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Looking at your location Toronto would be quite a bit east of where you would point the antenna for Buffalo the Toronto signal maybe come in a little weak.

Because you are so closer to the Cn tower you may still get those stations properly.

When I pointed my 4228 for Rochester the antenna would still pickup all the Toronto stations except Sun at 6 to 7 bars out of 10.

At this angle the 4228 is not supossed to get signal off the Cn tower because at this angle it's supossed to be a null.

Because the Cn tower is so high and my view clear the antenna is still able to get enough signal to get a steady and stable signal.

From your location Grand Island and south Buffalo is fine.

Your best bet would be a 4221 that has a wider angle of coverage compared to a 4228.

It's hard to say without seeing it but your best height and chances would be a small tripod mount on your roof with a 4221 if those trees are 25' higher than where your antenna is looking.

CM4228/9521/7775;F.RmJvc70FH96/8300HDPvr/Dish 612;B.Rm LC52LE810UN/8642HD;Study LG50PK550/Xbox360;
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post #215 of 655 (permalink) Old 2005-11-17, 10:35 AM
 
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Quote:
Originally Posted by stampeder
AAARRRRGGGGHHH!!!! See this post if you really want to know how I feel about attic installations:


Ya, I saw that indeed...I'm already getting Buffalo stations (analog only) with the rabbit ears up there...so I thought it may be worth a shot.

I have a fall back option on the roof. There's a "Look" antenna up there, they never removed it and I never used it...so it may be easy to put it on there and removed that Look thing.

36.5 may be just a little tight...Does it come apart in any way? or folds? ( I have a feeling that its a NO).

Searching the NET for sizes, I also came across this

Wineguard PR-8800

http://www.starkelectronic.com/wnpr8800.htm

Anybody know anything about them? Comparison to CM4228?

Samsung T160 with Cm 4228 in attic

Last edited by spmarceau; 2005-11-17 at 10:47 AM.
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post #216 of 655 (permalink) Old 2005-11-17, 12:42 PM
 
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Quote:
Originally Posted by Yaamon
...but your best height and chances would be a small tripod mount on your roof with a 4221 if those trees are 25' higher than where your antenna is looking.
Thanks Yaamon, I have also read about STACKING or combining two attenna's. From what I gather the best bet is to try the one and then
put up the second if required.

Last edited by teenie; 2005-11-17 at 12:49 PM.
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post #217 of 655 (permalink) Old 2005-11-17, 12:58 PM
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teenie yes try a 4221 and then go from there.

If you need another 4221 stack them and slightly offset one antenna if you need. If you keep the angle within 20' they should work good.

Stacking is cheaper than a rotor if the angle between the antenna's is not too great.

From you location you are fine if you need to go stacking.

CM4228/9521/7775;F.RmJvc70FH96/8300HDPvr/Dish 612;B.Rm LC52LE810UN/8642HD;Study LG50PK550/Xbox360;
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post #218 of 655 (permalink) Old 2005-11-17, 03:08 PM
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Quote:
Originally Posted by spmarceau
Wineguard PR-8800

http://www.starkelectronic.com/wnpr8800.htm

Anybody know anything about them? Comparison to CM4228?
Only second hand reports that they don't match the CM4228. If you check the Outdoor Antennas thread there's mention of an AntennasDirect 8-way bowtie reflector that matches the CM4228 but is much more expensive.
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post #219 of 655 (permalink) Old 2005-11-17, 04:38 PM
 
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Quote:
Originally Posted by Yaamon
teenie yes try a 4221 and then go from there.

If you need another 4221 stack them and slightly offset one antenna if you need. If you keep the angle within 20' they should work good.

Stacking is cheaper than a rotor if the angle between the antenna's is not too great.

From you location you are fine if you need to go stacking.
Great Info! Much appreciated! Yes, the rotor is something I was hoping to avoid unless I had no choice.

But I do have another question!
I just do not understand the 20' ??? IS that 20' in height apart? or just 20' apart... or something completely different?
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post #220 of 655 (permalink) Old 2005-11-17, 04:50 PM
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opps 20' I meant in degrees.

What I would do if you have a dual antenna setup is point one for Nbc for maxium signal.

Then the second antenna point it for Fox and Toronto.

Then check back the signal strength that Nbc is still the same or stronger than before with the second antenna hooked up.

If not just slightly close the anlge between the two antenna's maybe a 1/2" inch each.

CM4228/9521/7775;F.RmJvc70FH96/8300HDPvr/Dish 612;B.Rm LC52LE810UN/8642HD;Study LG50PK550/Xbox360;
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post #221 of 655 (permalink) Old 2005-11-17, 06:34 PM
 
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Yaamon,

For my location I think I could stack a 4221 and a 4228. Can I just point them in opposite directions ?

Crispy
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post #222 of 655 (permalink) Old 2005-11-17, 07:54 PM
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Crispy Iam not sure what will happen when you stack two antenna's as the angle is so wide apart is you are pointing at Toronto and Buffalo.

I never tired this before, sorry.

You may get better results if the antenna are not stacked and separated.

Remember if you are combining antenna's to make sure the cable from both antenna is the same length.

If I understand from looking on the map to get Grand Island and Buffalo for Nbc the angle maybe too wide as you are prettly close in distance between them.

CM4228/9521/7775;F.RmJvc70FH96/8300HDPvr/Dish 612;B.Rm LC52LE810UN/8642HD;Study LG50PK550/Xbox360;
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post #223 of 655 (permalink) Old 2005-11-17, 08:05 PM
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I think its just a terminology problem here. A stacked configuration is 2 identical Bowtie Reflector antennas mounted one on top of the other in the exact same direction with the bottom of the higher antenna's mesh touching the top of the lower antenna's mesh, with the output feeding through identical baluns over identical lengths of cable into a combiner (and preamp since this is typically a deep fringe solution). When I say identical, I'm not kidding.

Yagis can be stacked too.

Crispy, you can mount them on the same mast in different directions but I would keep their mesh reflectors about 1/2 their length apart, so about 17 inches from the bottom of the higher one to the top of the lower one. Never mount them back to back or they will tend to cancel eachother out.

Like Yaamon has found out in the past, its a long process of trial and error to get the patterns to work together.
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post #224 of 655 (permalink) Old 2005-11-17, 09:59 PM
 
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Quote:
Originally Posted by Crispy
Yaamon,

For my location I think I could stack a 4221 and a 4228. Can I just point them in opposite directions ?

Crispy
From personal experience I would recommend against combining the antennas with that much angle between the two primary source locations.

I spent a few weeks trying to get this to work, with less of an angle than you are facing, and eventually gave up. I bought a Channel Master rotator and haven't looked back since.
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post #225 of 655 (permalink) Old 2005-11-18, 10:33 AM
 
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Hmm,


Looks like a 4228 and a rotor may be the least of all evils afterall.

Problem is if you build a HTPC and set up recordings you will have to constantly make sure your rotor is facing the channels you want to record.

I am unaware of any software that will initiate a rotor for you.

Crispy
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