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  • 1 Post By TahoeBuck
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First set-up; need assistance

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Old 03-14-2017, 08:00 AM   #1
My plasma is High Def.
 

Join Date: Mar 2017
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Default First set-up; need assistance

Good morning. I've recently moved to the South Lake Tahoe area and am trying to stay off cable. I have NO background in this field at all. I am a mechanic by trade but I am here to learn. I want to preface my antenna selection with the reasoning behind the choice before it is suggested I get a better one. We get a TON of snow up here and experience substantial winds. I was looking for something with minimal surface area for snow to accumulate on and minimum sail area for wind to act on. Okay, moving on.

My current set-up:
Mohu sky 60
Winguard LNA-200 pre(power plugged into CM DVR USB)
Approx 30' of RG-6
CM DVR

What I receive------------Signal St--------------------Signal Qu
2.1/2----------------------0(100 shows/2sec)---------0
4.1/2/3-------------------100---------------------------100
8.1------------------------100---------------------------56-58
8.2------------------------100---------------------------62


Initially I ran the Mohu(eye-ball'd the aim, readjusted with wife watching CM signal quality) just with its little amp and had some success but CBS(2.1/2) have always been pixelated. If I recall, I did try removing the amp and did not see an improvement. I then read that those amps were fairly inept so tried the Winguard. Now I'm wondering if I'm overloaded and maybe that's causing the pixelation.
At this point I just spinning my wheels. Before I aimlessly spend any more money or time, does anyone have any suggestions?

Thank you for your time

So I understand I can't post a URL until I've posted 4 times but how about just my info that someone could add after going to TV fool?

?option=com_wrapper&Itemid=29&q=id%3de6a4da8b37e786
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Last edited by TahoeBuck; 03-14-2017 at 08:39 AM.. Reason: Separate channels from signal info for readability
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Old 03-14-2017, 09:00 AM   #2
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http://www.tvfool.com/?option=com_wr...e6a4da8b37e786

Return the Mohu which is a fairly ineffective antenna on VHF and replace it with a Winegard HD7694P aimed to your NNE. You plot says you don't need an amp, but it probably isn't hurting anything either.

Select a mounting location that offers the best available view in the direction the signals come from. Test your reception thoroughly using only a temporary mount before you break out your drill.
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Old 03-14-2017, 10:23 AM   #3
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I kinda knew that was the weak link but was hoping there was some way to keep it. With the 7694P, how do you think it would fair in sever weather? I've got 12' snow in my front yard, had 4' on the roof at one point and the wind was flexing the windows last month. I can run stays from the corners of the roof to the mast to stabilize it I guess.
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Old 03-14-2017, 10:50 AM   #4
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I hate to say it but South Lake Tahoe has the worst location to try for the Reno TV channels, unless your half way up one of the Southern mountain ranges your sunk as to trying for stations from Reno.

Here is a horizontal plot on KREN-DT from your TVfool report for a quick look at whats going on.

http://www.tvfool.com/?option=com_wr...dALLTV%26n%3d2

Your in the Blue shadow zone at the far right, the signals are skipping overt the tops of the mountains in-between, and when conditions are right the signals will drop in and out as the weather/temperature of the lake changes, the lake is the big flat area about 2/3's of the way to the right.

And the TV channels listed with a number in them (K38FW) are low power repeaters, not much can be done for them except a large directional deep fringe antenna.

My old company had many a call from Tahoe to put up TV antennas to get TV stations, we had to turn down quite a few as with many years of experience in trying for those channels we mostly wrote off the majority of SLT.

There are locations that work fine, but the majority of the city is too flat for much of the stations. and anything past State-line is out as the mountains get in the way.

Now over towards Emerald bay you have a chance as the elevations get better, but again the lake takes a hold at some locations as the TV signals bounce off it during certain times and causes a total drop out in signals.

This area is better suited for a CATV or satellite TV service if you want reliable TV.

And as stated before, not all locations are affected by the lake effect, it depends on your location and elevation off the lake floor.
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Old 03-14-2017, 10:50 AM   #5
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A sturdy tripod on the peak of the roof can easily handle a 10' mast without additional guying. That usually gives about 12' or so of elevation above the ridge.

The antenna, if well mounted and installed, is not going to be a factor with weather for years. It's always the other things like trees in the signal path that "weather" can affect.
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Old 03-14-2017, 11:05 AM   #6
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Quote:
Originally Posted by Terryl3 View Post
I hate to say it but South Lake Tahoe has the worst location to try for the Reno TV channels, unless your half way up one of the Southern mountain ranges your sunk as to trying for stations from Reno.

Here is a horizontal plot on KREN-DT from your TVfool report for a quick look at whats going on.



Your in the Blue shadow zone at the far right, the signals are skipping overt the tops of the mountains in-between, and when conditions are right the signals will drop in and out as the weather/temperature of the lake changes, the lake is the big flat area about 2/3's of the way to the right.

And the TV channels listed with a number in them (K38FW) are low power repeaters, not much can be done for them except a large directional deep fringe antenna.

My old company had many a call from Tahoe to put up TV antennas to get TV stations, we had to turn down quite a few as with many years of experience in trying for those channels we mostly wrote off the majority of SLT.

There are locations that work fine, but the majority of the city is too flat for much of the stations. and anything past State-line is out as the mountains get in the way.

Now over towards Emerald bay you have a chance as the elevations get better, but again the lake takes a hold at some locations as the TV signals bounce off it during certain times and causes a total drop out in signals.

This area is better suited for a CATV or satellite TV service if you want reliable TV.

And as stated before, not all locations are affected by the lake effect, it depends on your location and elevation off the lake floor.

Thanks for all the info...sigh....Given the signals I'm getting now though with my Mohu, do you "feel" it could be improved with a better antenna? The only thing I'm trying to accomplish beyond what I have now is bringing in 2.1 KTVN. My wifes way-preggo and I can't seem to get Ellen anywhere else. I've got her other shows covered just fine with what's coming in now.

I can get a tripod together, thanks for the suggestion.
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Old 03-14-2017, 11:26 AM   #7
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Quote:
Given the signals I'm getting now though with my Mohu, do you "feel" it could be improved with a better antenna? The only thing I'm trying to accomplish beyond what I have now is bringing in 2.1 KTVN.
Your test indicates that your chances for CBS are very good with the antenna that projectsho89 suggested.

There is a small hill in the signal path, but I think the Channel 13 CBS signal can make it over the hill to your antenna, which is at the right end of the terrain profile:

http://www.tvfool.com/?option=com_wr...dALLTV%26n%3d5



Attached Images
File Type: jpg TahoeBuckHDFcovKTVN.JPG (185.6 KB, 45 views)
File Type: jpg TahoeBuckHDFcovKTVNcu.JPG (120.3 KB, 46 views)
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Last edited by rabbit73; 03-14-2017 at 12:01 PM..
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Old 03-14-2017, 12:31 PM   #8
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There are commercial grade antennas that would handle rough weather better, but they are very expensive. It would be more cost effective to buy a second 7694 and a CB-8269 as a backup, if the first one works OK.

How To Troubleshoot a Winegard Antenna Cartridge Housing

https://www.youtube.com/watch?v=TlQk...ule1MX8jCAfvPQ
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Last edited by rabbit73; 03-14-2017 at 12:40 PM..
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Old 03-14-2017, 02:23 PM   #9
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Alright, I'm going to press on. Thank you for the input and advice. I ordered the 7694P and will give it a go.
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Old 03-14-2017, 06:35 PM   #10
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I don't have access to the old signal report maps we made years ago for your area, but if your in a blue zone then the higher you can get the antenna the better.

At some locations in Tahoe like by the airport we had to go as high as 60 feet and use a deep fringe antenna, the station your looking for is in the VHF band so a nice big deep fringe UHF/VHF antenna may work.

I wish I still had the antenna install company, but sold it many years ago, or I could have a look at your location, and the new owners ran it into the ground, so all the good test stuff is gone for good.

I had a 60 foot crank up tower on a trailer, with a nice antenna system on it, if I still had that setup I could test out if your going to have signal problems with the lake, one question, how close are you to the lake?(as a crow fly's)
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Old 03-15-2017, 06:52 AM   #11
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Based on his tvfool report, I estimate that he is 6.3 miles due south of the lake.
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Old 03-15-2017, 08:24 AM   #12
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That's correct, right around 6.35mi due south. I'm off 89 just as it leaves the 50. I've got a two story home and am mounting the antenna from the peak of the roof eve.

I have an RV parked in the back yard(15' lower) with a Winegard RVW-395 Sensar IV that gets great reception on the channel I'm after so I guess it stands to reason my issue at the house is the Mohu.

In the end, I'm saving $100/mo so I can't complain about a little trial and error. Thanks for your help.
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Old 03-15-2017, 01:02 PM   #13
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All you need is a good antenna that will work in the VHF band, as the channel your looking for is on VHF channel 13.

And on the peak of a 2 story house should clear any trees, if your RV antenna can get it then you should have no problems.
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Old 03-19-2017, 09:42 AM   #14
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I wanted to come back and say that the Winegard HD7694P made a HUGE difference. The Mohu might be okay for certain people but....what a difference the 7694 made. My 2.1 is now 100 sig str and 94-98 sig quality.

Thanks for sharing your time and experience.
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Old 03-19-2017, 10:05 AM   #15
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Awesome, thanks for following up!

:thumps-up:
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