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Scanner / Receiver Antennas For discussion of any type of receiving antenna used by a scanner or receiver base, mobile or handheld.

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Old 08-13-2013, 9:05 PM
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Default Airband antenna

I was thinking of making a ground plane antenna cut for civil airband with a female uhf connector and some copper, but got to thinking I have a extra radio shack discone (sputnick) sitting in the attic. Could I just cut that antenna and get the same results as building one?
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Old 08-13-2013, 9:17 PM
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A " Sputnick" refers to a Radio Shack ground plane, not a Discone. Which one do you have?

The Sputnick is already too short for VHF air and a stock R/S Discone works just fine for VHF air, you could not improve anything by cutting it.
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I was thinking of making a ground plane antenna cut for civil airband with a female uhf connector and some copper, but got to thinking I have a extra radio shack discone (sputnick) sitting in the attic. Could I just cut that antenna and get the same results as building one?
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Old 08-13-2013, 9:20 PM
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Sorry I have the ground plane not the discone.
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Old 08-13-2013, 10:11 PM
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If you can make all the elements about 25" long it will be roughly centered in the VHF air band.

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Sorry I have the ground plane not the discone.
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Old 08-13-2013, 10:43 PM
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Try it before you do any mods. I'm using one for VHF and UHF air with pretty good results.
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Old 08-14-2013, 12:28 AM
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Default agree with aggie72

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Try it before you do any mods. I'm using one for VHF and UHF air with pretty good results.
Been through the same process about a year ago. The radio shack ground plane does work pretty well for aircraft band, but the elements, as stated above, are a little short. I used it quite a while though, then dropped it off the roof and broke one of the lower radials off, so I decided to use the plans available for a homebuilt-model, with the closer dimensions to that aircraft range of freqs.
It blew me away, improvement big-time over the radio shack stock model. And it still picks up the VHF range that I listen to, 155mhz, and does that very well also.
Try one, you won't be sorry! Then build yourself a copper J-pole cut for aircraft band too, another excellent project.

Last edited by doublescan; 08-14-2013 at 12:29 AM.. Reason: misspelling
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