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Old 27-Jul-2018, 9:54 PM   #1
billamy94
Junior Member
 
Join Date: Jul 2013
Posts: 7
OTA reception Chandler TX

Hi,

I am going to install an antenna in a friendís attic. Report attached. Can someone tell me which direction to point it?

http://www.tvfool.com/?option=com_wr...9038133ca44a6c

I will be using some equipment we already have. Equipment suggestions are welcome in the event we do not get the results weíre hoping for...

Thanks,

Bill
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Old 27-Jul-2018, 11:09 PM   #2
rabbit73
Retired A/V Tech
 
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,352
Hello, Bill

How well an antenna will do in your friend's attic depends upon the attic construction; the signal loss is difficult to predict. If he has an aluminum foil thermal barrier, it will block the signals, and so will trees in the signal path.

As a double check on the accuracy of the TVFool report, because there have been many changes as a result of the FCC UHF Repack, here is a report by rabbit ears.info:



As far as antenna aiming is concerned, it will depend upon which channels he needs. I assume it will be:
KETK NBC, real channel 22, at 151 degrees true, 148 degrees magnetic
KLTV ABC, channel 7, 43 degrees
KFXK Fox, channel 31, 96 degrees
KYTX CBS/CW, channel 18, 140 degrees

He will need a UHF antenna with a wide beamwidth aimed at about 125 degrees for the UHF channels, and a VHF-High antenna aimed at 43 degrees for ABC.

For UHF, perhaps an Antennas Direct C2V
https://www.antennasdirect.com/store...-Complete.html
The C2V does have a VHF dipole, but it might not have enough gain if not aimed at channel 7

For VHF, perhaps a 30-2475
http://www.newark.com/stellar-labs/3...vhf/dp/48Y8141

The two antennas can be combined with a UVSJ UHF/VHF combiner.
https://www.antennasdirect.com/store..._combiner.html

https://www.radioshack.com/products/...itter-combiner

The TVFool Interactive map green signal lines can help with the antenna aim. You can move the marker by drag and drop to the antenna location:
http://www.tvfool.com/index.php?opti...pper&Itemid=90

for example:

Attached Images
File Type: jpg billamy94TVFreportRE.JPG (147.2 KB, 257 views)
File Type: jpg billamy94TVFgreenLinesExample.JPG (93.7 KB, 243 views)
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Last edited by rabbit73; 28-Jul-2018 at 12:09 AM.
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Old 28-Jul-2018, 12:44 AM   #3
billamy94
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Join Date: Jul 2013
Posts: 7
Thanks for the quick reply. I actually have the c2v. I am going to try it by itself first. Hopefully it will work. If not, Iíll dig into your other suggestions.

Thanks,

Bill
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Old 28-Jul-2018, 1:24 AM   #4
rabbit73
Retired A/V Tech
 
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,352
Quote:
Originally Posted by billamy94 View Post
Thanks for the quick reply. I actually have the c2v. I am going to try it by itself first. Hopefully it will work. If not, Iíll dig into your other suggestions.

Thanks,

Bill
Excellent!

Here are the repack changes for Tyler:

https://www.rabbitears.info/repackch...=&lss=&status=
__________________
If you can not measure it, you can not improve it.
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