Combining UHF > VHF Antenna

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tonybackache
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Combining UHF > VHF Antenna

Post by tonybackache » Fri Feb 05, 2010 3:02 pm

I recently put a Channel Master Model 4228 UHF antenna in my attic. Discovered a few of the locals (Memphis, TN) I'm trying to receive are on the VHF Band. What would be a good VHF antenna to purchase and how would I connect the 2?

sghioto
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Re: Combining UHF > VHF Antenna

Post by sghioto » Fri Feb 05, 2010 7:06 pm

I don't have a recommendation for a VHF antenna but
you can connect the two using a splitter/combiner, like this one from Radio Shack.
http://www.radioshack.com/product/index ... Id=2062059#

This particular model has a 300ohm UHF input. Just run 300ohm twin-lead straight from the Channel Master antenna to the splitter input eliminating the transformer or find a splitter with 75 ohm inputs.

Steve G.

Robert Reed
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Re: Combining UHF > VHF Antenna

Post by Robert Reed » Fri Feb 05, 2010 9:48 pm

Sig
As usual Radio Shack is advertising a Splitter, yet the pix shows a 75/300 ohm balun. So what are they really selling here is any body's guess :sad:
A high quality splitter can usually be used as a combiner, but most consumer devices probably don't fit the bill.

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Janitor Tzap
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Re: Combining UHF > VHF Antenna

Post by Janitor Tzap » Sat Feb 06, 2010 10:18 pm

Well, Tony......

First off you should go to http://www.tvfool.com/
And check where these station are, relative to where you are.

Use the "Radar Plot".
This will show what direction and relative signal strength to expect at your location.
As well as help you determine what type of antenna will work best, and where to point it.

Most people are using RG-6 75 ohm cabling for their antenna setups.

Basically, you have a 300 ohm to 75 ohm transformer connected directly at the antenna.
With RG-6 75 ohm cabling then coming down to a Combiner/Splitter,
with 75 ohm inputs & outputs that will then go to your TV set or Set Top Box Tuner.

Here's a helpful PDF file that goes into setting up Over Air Antenna systems.
http://manuals.solidsignal.com/AntInstallGuide.pdf


Signed: Janitor Tzap

hcheetham
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Re: Combining UHF > VHF Antenna

Post by hcheetham » Mon Feb 08, 2010 11:29 am

the 4228 should receive vhf and uhf.the 4221 only receives uhf.try turning the antenna and then rescan.with digital you got to be pointed towrd the station almost directly on the signal.

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