Rat Shack Antenna

[bsr2002]

I have a RS VHF/UHF Antenna. Can I chop off the UHF elements and make it a VHF only antenna?

 

[Peter Parker]

Why not just use a spllitter to separate the signals. You might want UHF someday. I believe that RS carries them.

 

[Lorenzo]

Yes, but the question is why. Cutting off the UHF elements and phasing lines won't completly remove all UHF signal from the downlead if that's what you really want.

 

[bsr2002]

I have a CM 4228 and wanted to get VHF as well and thought if I didn't have to buy a new VHF Ant. I could use what I got now. So what do you think?

 

[Lorenzo]

If your receiver only has one input you're either going to have to buy a coax switch or better yet a UHF-VHF diplexer. This is like a satellitle-OTA or cable diplexer except it combines or separates ch 2-13 and chnls 14-69. With the coax switch one position would have all the U-V channels from the Radio Shack antenna and the other position would be the bowtie only. Using the U-V diplexer would attenuate the U signals from the Radio Shack and pass only the U signals from the bowtie. In theory the Uhf reception would be better without the UHF portion of the Radio Shack antenna since the diplexer isn't perfect and allows about 10% of the all channel's Uhf signals through. I think I'd look critically at the UHF bowtie reception alone versus being combined with the all channel antenna before I cut off the UHF portion of the all channel.

Some typical uv diplexers or better called mixers or separators or combiners are a Pico UVSJ and Blonder Tongue MUVF.

 

[Kevinw]

I have a CM 4228 and wanted to get VHF as well and thought if I didn't have to buy a new VHF Ant. I could use what I got now. So what do you think?

What is the VHF chanel you are trying to get/ The CM 4228 can reveive the high VHF- 10 on up...