TV Fool  

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

Notices

Reply
 
Thread Tools
Old 28-Aug-2013, 12:57 PM   #1
ngreenberg
Junior Member
 
Join Date: Aug 2013
Posts: 2
Trouble getting VHF channels in Boulder, Colorado

Hi All,

I am new to the whole OTA thing, but on a whim, purchased and installed the following equipment for my house (see report here: http://www.tvfool.com/?option=com_wr...46aeceb419e971)


Antennacraft HD1850 aimed at 168 degrees Mag. North
|
|
VHF/UFH Signal Splitter
|
|
Antennacraft 10G222 High Gain VHF/UHF Antenna Pre-Amplifier
|
|
TV Set

I am getting great coverage of KXDP, KDVR, KCNC (as well as others) and after a couple of channel installations with the TV, KMGH. However, I cannot get KUSA to come in. This doesn't add up since that channel has a stronger signal than some of the channels that are coming in great, and is broadcast from the same location as those channels. In fact, I used to get decent reception using in-house rabbit ears.

What should I try next?

Thanks in advance for any help you can offer!
ngreenberg is offline   Reply With Quote
Old 28-Aug-2013, 7:45 PM   #2
teleview
Guest
 
Posts: n/a
168 degree magnetic compass direction is the other , north , aka , South.

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

Use a Old School magnetic compass to aim antenna.

Channels 7 and 9 in the VHF high band of channels 7 thru 13 are effected in a negative way more by multi-path reflections off of , mountains , hills , buildings and trees / tree leaves , etc. .

Most Digital Tv's have a Signal Strength Meter and some Digital Tv's also have a Signal Quality Meter.

---->Adjust the aim of the antenna for best reception.<----

---->Changing location of antenna can also improve reception.<----

Removing ALL of the amplifier , remove the preamp unit , remove the power injector , remove the power supply.

Can improve reception.

Reason , the amplifier amplifies the main signal and the reflected signals.

The reflected signals are weaker of signal strength then the main signal.

So removing amplification will reduce the signal strength of the reflected signal and then most of the time the reflected signal will be weak enough that the computer in the tuner can correct the reception.
______

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

Do Double Rescan , http://www.wchstv.com/DoubleReScanAlert.pdf.

___________________

Last edited by teleview; 17-Sep-2013 at 6:09 PM. Reason: Clarify information and typos.
  Reply With Quote
Old 28-Aug-2013, 7:58 PM   #3
GroundUrMast
Moderator
 
GroundUrMast's Avatar
 
Join Date: Oct 2010
Location: Greater Seattle Area
Posts: 4,773
Remove the VHF/UHF splitter. Remove the amplifier.

With the Antenna connected to one TV, what are the results?
__________________
If the well is dry and you don't see rain on the horizon, you'll need to dig the hole deeper. (If the antenna can't get the job done, an amp won't fix it.)

(Please direct account activation inquiries to 'admin')
GroundUrMast is offline   Reply With Quote
Old 28-Aug-2013, 8:28 PM   #4
ADTech
Antennas Direct Tech Supp
 
Join Date: Jan 2010
Posts: 2,942
You're back in the foothills of the Eastern Range and your signal path to Lookout Mountain is obstructed.

Several possibilities:

1. FM interference due to the pre-amp. Eliminate the unneeded amp, add one or two FM filters coming off antenna.

2. Multipath or other concern that is causing a signal cancellation of one or several particular stations. Move the antenna.

One or both of those should fix it.

FM filters are available at Radio Shack, cat # 15-0024.
__________________
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 13-Sep-2013, 10:52 PM   #5
ngreenberg
Junior Member
 
Join Date: Aug 2013
Posts: 2
Thanks for all of the help. I eliminated the amplifier (this had no effect) and realized that I was aiming the antenna in the wrong direction--I had switched the front and back (this resulted in channel 9 coming in, but 22 and 31 no longer come in). My next thought is to add the preamp back in, but I would welcome any suggested steps.

Thanks!!
ngreenberg is offline   Reply With Quote
Old 13-Sep-2013, 11:14 PM   #6
teleview
Guest
 
Posts: n/a
Amplifiers Are Not the answer to , bad coax , bad connectors , bad couplers , and etc. .

ALL , coax , connectors , couplers , and etc , are suspect of being bad through out the antenna system.

Before adding the amplifier in to the system.

To prove reception.

Connect a NEW matching transformer (balun) to the HD1850 antenna.

Connect a NEW continues length of RG-6 coax with the Compression type connectors on the ends of the New coax , not the old crimp type connectors on the ends of the coax.

Connect to the New matching transformer and run the New continues length of coax through a open door or window , direct to 1 Tv.

Do a Double Rescan.

________________________________
  Reply With Quote
Reply

Bookmarks

Tags
ota, reception, vhf

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 1:26 PM.


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