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Reception Prob - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement

 Post subject: Reception prob
Posted: Fri Aug 05, 2005 10:04 pm 
Newbie here,hope someone can help. I live about 2 miles from my NBC affiliate, which would be VHF 12. It seems to effect virtually all my local channels, to such a degree that my fox is completely scrambled and its UHF 35 , and only 10 miles away. The question is would the HDTV stuff( it all being UHF) be just as likely to be shot by this overpowering local channel? Hope this makes sense.thanks.

 Post subject:
Posted: Mon Aug 08, 2005 2:19 pm 
User avatar

Joined: Mon Jul 18, 2005 4:31 pm
Posts: 32
Location: Baltimore, MD
Yes, HDTV would be affected by the same overloading. The trouble you are having with UHF35, in fact, may be caused by the NBC high def signal, not by channel 12.

Things to try:
1. Call the TV station and ask them to provide you some filters because of overload you are getting. In the past, they sometimes have.
2. Buy an attenuator at Radio Shack that will cut the NBC level and still allow 35 to be viewable.
3. If you feel like tinkering, you can make a "quarter wave stub" filter yourself out of coax cable. See a ham radio book for instructions.
4. Borrow somebody else's TV. I wouldn't think yours should overload so easily.

By the way, if you are running an antenna amplifier, all of the trouble is probably there.

 Post subject:
Posted: Mon Aug 08, 2005 4:50 pm 
User avatar

Joined: Wed Aug 20, 2003 11:47 am
Posts: 47
Location: Santa Barbara, CA
All good advise.

Another option would be to just turn your set off altogether. You wouldn't be missing anything useful.

Posted  11/12/2012

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