TV Fool  

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

Notices

Reply
 
Thread Tools
Old 6-Nov-2013, 1:19 AM   #1
Geek
Junior Member
 
Join Date: Oct 2013
Posts: 8
Finally got the antenna up high - still not what I expected.

Hi,

Here is my TVFool reports. As you will read below, I have moved the antenna several times at different heights and locations and had different reports for each. I include the various reports for educational reasons.

First 'side of house' report: http://www.tvfool.com/?option=com_wr...46aed6a9804c85
Summer 'on the deck' report: http://www.tvfool.com/?option=com_wr...46ae65a7cc7580
Current 'high' report: http://www.tvfool.com/?option=com_wr...46ae65c2ffc82f

Best way to get the coordinates is to find your home on google maps, zoom in all the way and then right click on the location of your antenna location (or proposed location) and select "Directions from here". The longitude and latitude are then placed in the box to the right. Just cut and paste into TVFool's fields.

Still learning, but have read a ton of stuff from this forum, so I figured I'd post my experiences with "Cutting the Cable".

Earlier this year, the family decided to dump the "Triple Play" from Comcast and stick with just the internet (as there isn't any alternative for that in the area). With the new Panasonic Plasma having the streaming apps built in, and a Roku on the other TV in the house, all it seems I needed was an antenna to pick up the local stations.

So, after reading a LOT of reviews, posts, etc. I purchased the RCA ANT751. I believe I got the 'R' version, but with all the conflicting labels, I'm not sure. The box did not say 'R', but the packing slip did. No matter....

The stations of interest are the ones clustered in the 109 degree line on the TVFool reports. As you can see, the various stations are similar in all 3, but the heights made significant differences in the signal strengths.

Anyway, here is the past story:

Being the type of person that leaves nothing to chance, I opened up the antenna as soon as it arrived connected it to the TV, and pointed it to the cluster of Boston transmitters (actually located in Needham) using the 109 degree orientation from the TVFool report. Inside the house, I was not surprised to get nothing from the 20 mile away transmitters. Pretty much figured due to a local hill and forest that an outdoor antenna was mandatory.

So, I ran 50' of coax out the back door and rested it on the deck railing. Wow! Only 6 feet off the ground and I got a nice mix of the strongest stations. Of note, WBZ was there which was a very important station to get.

Feeling empowered, that weekend, I used my extension ladder to get the included J-pole up as high as I could on the side of the house most favorable for reception. Using Google's sat view to get the actual coordinates, I pulled up my TVFool report and for the height was looking at 2 edge reception. Not great, but gave it a go.

Reception was OK. Strongest stations were fine for the most part. The most curious was a missing WBZ. Was also getting several stations from Rhode Island at 40 miles away. The 'meter' on the TV showed a fairly modest reception strength, so I figured a pre-amp would be just what I needed. Roughly a month later I got back up on the ladder and hooked up the amp. Installed the RCA TVPRAMP1R. 22db for the UHF which is what most everything around me is broadcasting on.

More channels, better signals on some, but still no WBZ.

Did a lot more reading and realized that my antenna was pointed right at a fairly large Oak tree. (D'oh!) At the height of the antenna, I was pointed directly into a junction of some major limbs putting a lot of wood between my antenna and the towers. Could that really block that much signal?

So, on a whim, remembering how well I got WBZ from the deck (roughly 15 feet further SW from the current location, but a lot lower) I decided to try an experiment.

I rigged a 10' piece of Metal Electrical Conduit to the end of the deck and put the antenna (with the amp) on the top of that. From roughly 25 ft high down to about 13 ft off the ground, but pointed past the massive Oak and into a distant stand of Poplar trees.

Not only did I not lose a single station (even the ones from Rhode Island), but picked up WBZ and a couple others. SUCCESS!

OK, not perfect. The pole has too much flex which caused the antenna to move a lot in the wind. And WHDH was finiky as to when it wanted to be seen. (no noticable pattern) I needed a better solution.

The house is 2 stories with a walk-up attic. Given the raised foundation, the peak is some 34' off the ground. My ladder can't get close, and the pitch of the roof is too steep to try to work on without safety lines. I toyed with the idea of renting a 40' lift, but for $400, it seemed I could find a better solution.

Ultimately, a friend who did tree work and had the proper climbing gear offered to help. With safety ropes rigged over the house, he secured himself and was able to mount the antenna on a 10' mast at the peak on the opposite end of the house I had been using. (this was selected due to the way the house and garage attach allowing for him to stand on the garage and work.) The height of the antenna is nearly 40' over the ground level now. It points across the roof and front yard and misses most of the hardwood forest. Only the very top of the poplar trees are really in the way.

I left the amp installed since I had silicone sealing the cables to both the 300-75 ohm transformer as well as the coax attached to the amp. The new mast is larger and more rigid. I ran the coax inside the mast and then secured it well down to the basement level. Proper grounding was also installed.

Picked up even more stations. The biggest surprise was WLNE out of Rhode Island. And I even get a good signal from WWDP which is listed as an NM -2.3 db. However, I now do not get any signal from WBPX which is a fairly strong station.

So, the reason for posting are the following questions:

1) Is it normal for even a strong station to exhibit audio drops or occasional picture errors? This past weekend was quite windy and we saw some of this. Nothing serious, but wondering if there is something that can be done about it.

2) What is up with WBPX? It is a 2-Edge, but it is physically located on the same tower as WLVI which comes in very strong. WLVI does have a little more power at 550kkW, but WBPX is no slouch at 300kW. It should be noted that I picked this up just fine at the 'deck' location. Seems odd that I can't get it now. WFXT is also on the same tower and has a 750kW transmitter.

3) I'm dreading the winter. Will snowstorms create significant signal loss? I'm most concerned with having access to school closing reports on the major networks which are my strongest channels.

4) Given that the antenna is now way beyond my reach without help, how long can I expect the setup to realistically last? Will I need to go up and replace the pre-amp every year or would once a decade be unusual? In other words, how robust are the parts?

Thanks!
Geek is offline   Reply With Quote
Old 7-Nov-2013, 2:47 PM   #2
Tower Guy
Senior Member
 
Join Date: Dec 2009
Location: Delmar, NY
Posts: 1,236
It seems that the strong signal from WUNI may be causing interference. That would explain the difficulty with signals that should be easy to receive. To eliminate the problem you could try placing the antenna on the side of the house away from WUNI, using the house as a shield, or try a more directional antenna such as an XG43. You could keep the ant751 for the VHF channels.
Tower Guy is offline   Reply With Quote
Old 7-Nov-2013, 4:52 PM   #3
teleview
Guest
 
Posts: n/a
+

Test reception without the , preamplifier , power injector , power supply.

--------------

Test reception with the ANT751 antenna aimed at about 170 degree magnetic compass direction.

Here is how to aim antennas , www.kyes.com/antenna/pointing/pointing.html

Use a Real and Actual magnetic compass to aim antenna.

Digital tuners can develop - Digital Glitches - that are not cleared out with simple channel scans.

To Clear Tuner , Do Double Rescan , www.wchstv.com/DoubleReScanAlert.pdf

----------

www.coaxseal.com , works better then silicone sealer.

Last edited by teleview; 7-Nov-2013 at 5:47 PM. Reason: Clarify information and typos.
  Reply With Quote
Old 7-Nov-2013, 5:38 PM   #4
Geek
Junior Member
 
Join Date: Oct 2013
Posts: 8
Quote:
Originally Posted by teleview View Post
Test reception without the , preamplifier , power injector , power supply.
That would be nice, but it isn't going to happen. Mostly because I can not get to the amp easily and there is no way I'd want to break up the sealant just to have to redo it all again. I have absolutely no reasonable expectation that such an action would have any positive results. My strongest station is only rated an 83%.

--------------

Quote:
Originally Posted by teleview View Post
Digital tuners can develop - Digital Glitches - that are not cleared out with simple channel scans.

To Clear Tuner , Do Double Rescan , www.wchstv.com/DoubleReScanAlert.pdf
Have already done that multiple times.


----------

Quote:
Originally Posted by teleview View Post

www.coaxseal.com , works better the silicone sealer.
Better at what? All external connections have rubber boots on them. I injected silicon into the rubber boots to completely seal the connections. This was all done months ago in a warm dry location. Never had any issues with the connections all summer. Even in driving rain.
__________________
RCA ANT751 and RCA TVPRAMP1R mounted on Gable End. Mast is roughly 7' over roof and antenna is just shy of 40' high. Current TVFool Report:

http://www.tvfool.com?option=com_wr...46ae65c2ffc82f
Geek is offline   Reply With Quote
Old 7-Nov-2013, 5:50 PM   #5
Geek
Junior Member
 
Join Date: Oct 2013
Posts: 8
Quote:
Originally Posted by Tower Guy View Post
It seems that the strong signal from WUNI may be causing interference. That would explain the difficulty with signals that should be easy to receive. To eliminate the problem you could try placing the antenna on the side of the house away from WUNI, using the house as a shield, or try a more directional antenna such as an XG43. You could keep the ant751 for the VHF channels.
Except that I'm able to receive much weaker signals. Also, when the antenna was mounted on the deck, I had far more blocking the aimed direction and virtually nothing blocking the WUNI signal and could get WBPX. Would have thought the interference would be far greater in that location.

This is why I'm so puzzled. Nothing makes logical sense.

WUNI was always LOS and always came in very strong (even being over 90 degrees off the alignment) And yet, WBPX came in weak, but usable with a NM of 30.2 and 2 edge reception. Now that the NM is 39.5, I can't get it at all. It is still listed at 2 edge, but with over 30' more height, it just seems odd I can't get it.

What is really puzzling is that I get (although it is marginal) WWDP at roughly -2.3 NM. Although that is on another band.

I'm hesitant to put up a larger antenna - we have strong winds and I don't like the idea of a large wind load.
__________________
RCA ANT751 and RCA TVPRAMP1R mounted on Gable End. Mast is roughly 7' over roof and antenna is just shy of 40' high. Current TVFool Report:

http://www.tvfool.com?option=com_wr...46ae65c2ffc82f
Geek is offline   Reply With Quote
Old 7-Nov-2013, 10:32 PM   #6
Tower Guy
Senior Member
 
Join Date: Dec 2009
Location: Delmar, NY
Posts: 1,236
The interference is not the same on all channels.
Tower Guy is offline   Reply With Quote
Old 7-Nov-2013, 10:58 PM   #7
ADTech
Antennas Direct Tech Supp
 
Join Date: Jan 2010
Posts: 2,942
2-edge signals do not diffract equally or uniformly. You will need to play hide and seek to find them sometimes.
__________________
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
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 12:01 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © TV Fool, LLC