TV Fool  

Go Back   TV Fool > Over The Air Services > Help With Reception

Notices

Reply
 
Thread Tools
Old 15-Jan-2017, 6:14 AM   #1
dub
Junior Member
 
Join Date: Apr 2014
Posts: 4
Antenna Recommendation from Moreno Valley, CA

http://www.tvfool.com/?option=com_wr...e6a4069490a1c0

The antenna will be roof mounted.

There is a mountain in between the broadcast towers (Mt. Wilson) but I can see the top of the mountain from my roof if that will make a difference.

I want channels 2,4,5,7,9 and 11

According to the report, only 2 and 4 will require "extreme measures"

I will be planning to mount it on the roof and I want to get it done the first time so I would like an antenna recommendation that will suit my needs.

Thanks. I hope to enjoy OTA TV soon.
dub is offline   Reply With Quote
Old 15-Jan-2017, 3:48 PM   #2
WIRELESS ENGINEER
Senior Member
 
Join Date: Dec 2013
Location: Eastern Ohio
Posts: 101
Due to line of sight co-channel and adjacent channel interference sources, I think it would be money well spent to hire a local antenna installer for a site survey
WIRELESS ENGINEER is offline   Reply With Quote
Old 15-Jan-2017, 4:30 PM   #3
ADTech
Antennas Direct Tech Supp
 
Join Date: Jan 2010
Posts: 2,803
Find posts by Pete Higgins. He's behind that same mountain.
__________________
Antennas Direct Tech Support

For support and recommendations regarding our products, please contact us directly at https://www.antennasdirect.com/customer-service.html

Sorry, I'm not a mod and cannot assist with your site registration.
ADTech is offline   Reply With Quote
Old 16-Jan-2017, 5:34 AM   #4
dub
Junior Member
 
Join Date: Apr 2014
Posts: 4
Quote:
Originally Posted by ADTech View Post
Find posts by Pete Higgins. He's behind that same mountain.
I contacted him and we are nearby but he is a few miles south so his tvfoolreport is different than mine. He can get san diego channels and the los angeles channels are more stronger in his area even though we are behind the same mountain.

The channels that are 2Edge for me are LOS for him.

Last edited by dub; 16-Jan-2017 at 5:50 AM.
dub is offline   Reply With Quote
Old 16-Jan-2017, 5:50 AM   #5
dub
Junior Member
 
Join Date: Apr 2014
Posts: 4
I generated 5 more reports at different heights (100-500). It seems to get better at 200 feet and 400 feet but they all stay as 2Edge.
100 ft:
http://www.tvfool.com/?option=com_wr...e6a4876161bb9e
200 ft:
http://www.tvfool.com/?option=com_wr...e6a4d2ecc5dda7
300 ft:
http://www.tvfool.com/?option=com_wr...e6a4efc1c3baff
400 ft:
http://www.tvfool.com/?option=com_wr...e6a4173d056d8d
500 ft:
http://www.tvfool.com/?option=com_wr...e6a460635a0791
dub is offline   Reply With Quote
Old 16-Jan-2017, 11:34 AM   #6
ADTech
Antennas Direct Tech Supp
 
Join Date: Jan 2010
Posts: 2,803
Your situation is really no different than Pete's in specific regard to the LA channels which is what you asked about. What worked for him will also apply to your location with only minor local variations.

You're still staring point blank into a mountain that has both TV and FM stations on it and the desired signals are directly behind that mountain. Unless you're prepared to invest similar time, effort and money as Pete did, your prospects for reliable reception of the LA signals are extremely poor.

We can only base our recommendations on the combination of the data available (with it's limitations, both known and unknown) and from our collective experiences. WE's recommendation in post #2 is very appropriate, you may find someone local whose experience is such that he's found a combination that works well enough for him to stand behind.
__________________
Antennas Direct Tech Support

For support and recommendations regarding our products, please contact us directly at https://www.antennasdirect.com/customer-service.html

Sorry, I'm not a mod and cannot assist with your site registration.

Last edited by ADTech; 16-Jan-2017 at 11:36 AM.
ADTech is offline   Reply With Quote
Old 18-Jan-2017, 1:26 AM   #7
Pete Higgins
Member
 
Pete Higgins's Avatar
 
Join Date: Apr 2013
Location: California, 58 miles @112 degrees from Mt. Wilson
Posts: 83
RE: Antenna Recommendation from Moreno Valley, CA

ADTech & ALL,

Thanks for trying to help my neighbor.

Dub is ~2.35 miles E-SE from my location @ ~106 degrees, so he is further out of Box Springs shadow. His TVFool report shows about 9 dBm more signal strength (8X) than mine so I expect with a single dual band antenna he will get more reliable reception than me. My dual UHF antennas are only yielding ~2.7 dB of gain over a single UHF instillation so he should be well above my cliff. I did offer to lend him one of my spare 91XG UHF antennas to see what he can get. I donít have a spare High VHF antenna for 7, 9, 11 & 13, however, since they are no longer sold, thatís kind of a moot point.

TVFool report @ my house:
http://www.tvfool.com/?option=com_wr...e6a4cc5d0ba5ba



Dubís TVFool report:
http://www.tvfool.com/?option=com_wr...e6a4069490a1c0



I own a condo that is 4.31 miles @ 132 degrees from my location or roughly twice as far east and south as Dubís location. Its TVFool report is all high green, so here, just a few miles makes a big difference.

TVFool report @ my condo:

http://www.tvfool.com/?option=com_wr...dfaff76843edec




Here is how I answered his questions & what I suggested:

Dub,


Okay thanks. I won't be able to get all of these channels correct?
The channels youíll get depend on a lot of factors. Atmospheric absorption (attenuation) weakens the signals coming from Mt. Wilson so reception changes with temperature, cloud cover, fog, rain, smog etc. The biggest problem for our area however is 1 & 2-Edge reception.

What that basically means is that the signals we receive, instead of traveling line-of-sight or directly to our antennas, are blocked by one (1-Edge) or two (2-Edge) obstructions. Think of shining a flashlight beam on the wall (equals line-of-sight reception). Then cover the main part of the beam with a piece of cardboard held a few feet from the flashlight. The strong spot disappears but a much dimmer area of light can still be seen. Thatís effectively all the signal we have to work with. The further back from the obstruction the stronger the signal gets.

Thatís why for real UHF channel 43 (CBS virtual channel 2.1) your TVFool report shows -103.3 dBm and mine only shows -112.4 dBm. Another words, your signal will be 9.1 dBm (or approximately 8 times) stronger than mine.

Your UHF channel 36 (NBC virtual channel 4.1) is -98.3 where mine is -107.4 or again, yours is approximately 8 times stronger.


You are getting CBS and NBC from San Diego correct?
CBS & ABC from San Diego are broadcast on real channel 8 & 10 from Mt. Soledad in La Jolla. I get them sporadically but not reliably enough to watch regularly. I used to get NBC on real channel 40 (virtual channel 39.1) real reliably, but last summer something changed and now I hardly ever get it at all. Ironically, I still get the co-located Fox & PBS transmitters like gang-busters.


Can I also get those channels from there or no?
The only San Diego stations I see in your TVFool report are K12PO an analog channel 12 repeater in Temecula for KUSI and KFMB CBS in San Diego @ -105.6. Youíll get CBS UHF channel 43 (CBS virtual channel 2.1) from LA @ -103.3 dBm more reliably without having to turn your antenna.

If I am not able to get all of these channels, can you recommend an antenna which can get me most of these channels?
Because of the weak nature of your signals I recommend the highest gain antenna you can afford/install. I use separate High VHF and UHF antennas because at the time I bought them they afforded the most gain available. Unfortunately, the High VHF antennas I use are no longer made so for your location I would recommend something like the Winegard HD7698P @ $124.99 or similar.

http://www.solidsignal.com/pview.asp?p=hd7698p


Iím sure Dub would appreciate input from others besides me on acceptable solutions. Just keep in mind heíll probably want a High VHF/UHF solution because we have four (7-ABC, 9-CBS sister station, 11-FOX & 13-KCOP) High VHF channels with the CW on channel 31, NBC on channel 36 and CBS on channel 43. There are a multitude of others like ION on channel 38 or that show movies on sub-channels that heíll want, not to mention all the foreign language channels if he speaks a second language.

Last edited by Pete Higgins; 18-Jan-2017 at 1:47 AM.
Pete Higgins is offline   Reply With Quote
Reply

Bookmarks

Go Back   TV Fool > Over The Air Services > Help With Reception


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off




All times are GMT. The time now is 9:07 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright © TV Fool, LLC