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Old 20-Jul-2017, 6:53 PM   #1
rabbit73
Retired A/V Tech
 
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,516
Can you help me out?

Quote:
Originally Posted by Lanstarr
So I have been itching to cut the cord for about a month, that is when I found this site. I registered and have been waiting for a mod to approve me for a couple of weeks. After looking around the forum I saw that other people have had similar experiences. Could you post my tvfool report for me?

http://www.tvfool.com/?option=com_wr...e6a4699ec3e877

I am looking for antenna that will be able to receive ABC, CBS, FOX, and NBC. According to the report they are 60 some miles away with a signal in the high -80's.

I bought the 150 mile antenna on amazon for 32.00 bucks listed here https://www.amazon.com/Amplified-Ant...+antenna&psc=1

and was not able to pick any of my desired channels up. After reading around here I saw that this antenna is a piece of junk. What could get the job done?
Welcome to the forum, Lanstarr:

I don't have any influence with your registration, but I will post for you so that others can help.

rabbit
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Old 20-Jul-2017, 7:28 PM   #2
rabbit73
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Location: S.E. VA
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Quote:
I am looking for antenna that will be able to receive ABC, CBS, FOX, and NBC.
They are very weak, and Fox KFXV on real channel 20 is the weakest.

The problem is that KTLM is about 50 dB stronger than NBC. If it weren't for KTLM, you might have been able to pick up NBC with your antenna, but its 30 dB preamp was probably overloaded by KTLM.

The ideal solution would be a custom filter (expensive) to make KTLM on real channel 40 weaker so that you could use a preamp for your weak desired channels.

Without that filter, the best you can do is aim a high gain antenna, like the Winegard HD7698P, at about 105 degrees magnetic, and let the antenna pattern make KTLM weaker because it is in a different direction.

It might be possible to add a medium gain preamp like the Antennas Direct Juice that is resistant to overload, but then your tuner might be overloaded.
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Last edited by rabbit73; 20-Jul-2017 at 7:37 PM.
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Old 20-Jul-2017, 8:02 PM   #3
JoeAZ
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Join Date: Mar 2017
Posts: 371
I'd agree with Rabbit that you do have a difficult but not impossible
situation. I also think the Winegard 7698p gives you the best
chance to receive the channels you want. Hopefully you do not
have trees which block your view to the Southeast. I'd use a "J"
mount and initially try keeping your home between KTLM and
your antenna. Your home could block the worst of the KTLM signal.
A roof mount is probably not the way to go.
The added height would help reception in some ways but cause
overload from KTLM. This means mount somewhere on the South
side of your home. I would suggest using a RG6 cable and run
it to ONE television at first. Keep your cable run 50 feet or less.
Be sure to ground your system. This should get you started.
Please check your private message inbox.....

Last edited by JoeAZ; 21-Jul-2017 at 2:00 AM.
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Old 24-Jul-2017, 6:48 PM   #4
rabbit73
Retired A/V Tech
 
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,516
Quote:
Originally Posted by Lanstarr
You mentioned that the proximity of that ne antenna could be bypassed by a custom filter... how much would that run?
If Tin Lee builds a custom filter to make KTLM on real channel 40 weaker, it would probably be about $100+.

I suggest you first try the HD7698P antenna before ordering a custom filter.

If you need a custom filter, call Tin Lee Electronics in Canada, talk to one of their filter engineers, and email your tvfool report to them.

They can build a single channel bandstop filter to attenuate KTLM on real channel 40.

http://www.tinlee.com/

http://www.tinlee.com/Matv_filters.php?active=3

http://www.tinlee.com/MATV-Bandstops.php?active=3#CR7

http://www.tinlee.com/PDF/CR7-%20bandstop-w.pdf

http://www.tinlee.com/contactUs.php

I suggest the CR7X-40 which has an outdoor enclosure so that it can be inserted between the antenna and the preamp near the antenna.

CBS on 31 has co-channel interference from XET, also on 31, that is 17.8 dB stronger, but in a different direction. CBS must be at least 16 dB stronger than XET to avoid interference. The 7698 antenna might not be able to reject XET from the rear to avoid interference to CBS.

However, you should at least be able to get KVEO NBC on 24

http://www.rabbitears.info/market.ph...&callsign=kveo

and KRGV ABC on 13

http://www.rabbitears.info/market.ph...&callsign=krgv

In a few years KTLM will move to channel 14, as a result of the FCC UHF channel "repack" which gives channels above 36 to the cellular interests. A new filter will be needed then to make 14 weaker.

http://www.rabbitears.info/market.ph...&callsign=ktlm

K48OL is not on the air.

PAR Electronics might also be able to build a custom filter to attenuate 40:
http://www.parelectronics.com/single-channel-tv.php
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