Is this a Dipole Antenna?

[Luis_C]

My dad found this antenna with Belden 9258 Coax with a N-male and TNC connector, it is about 25 feet. He told me that probably it was used for UHF transmission.



I would like to know what kind it is, and for what do you think it was designed and if it should improve a bit my airband reception. I'm using a Pro-95 Scanner with the stock antenna. I'm about 6.30 Miles from the airport, I can pickup the tower without problems with the stock antenna, lucky me, I would say. I can hear aircrafts when they are approvaching from about 7 miles of the airport, and some big aircrafts from about 30 miles, (well, they say they are at that distance of the airport.) but it's hard to understand what they are saying when they are at 30 miles.

I removed the TNC connector and got one of those solderless BNC connectors from Radio Shack, I would have liked it to be solder, I would have gotten the tools somehow for do it.

With this antenna, I have mounted it a bit high and in vertical position. (Maybe this antenna is designed for horizontal position? (Like about 2 meters) I haven't been able to mount it on the roof. (I have first to get an idea of how to keep it firm) and sometimes I think the signals are a bit more stronger, but not a real difference. Do you think it should have made a big difference? I know there's many things to include in the equation, but maybe there's a general answer? Maybe this coax is so crappy or something?

The cable is RG-8X the cable but doesn't fit the connector, because the cable is a bit smaller, but I put some tape in the cable for make it a bit wider, just like if it were a RG-58 cable, and while I was doing it, I was monitoring the police just to check out how if the contact was ok, I made my best and seems decent.

Thanks.

 

[ka3jjz]

As short as that horizontal element is, my guess would be that this antenna is a UHF antenna; probably won't work well for civ air VHF. We've got a few homebrew designs that with a little work on the formula, will work just fine on civ air VHF on our scanner antennas wiki page, depending on height and any obstacles. A plain old ground plane, mounted nice and high and fed with the correct coax, will do just fine.

73s Mike

 

[BMT]

One thing about antenna's. You will never know if you don't try!!

BMT

 

[radio10-8]

Can I see another picture with a different view? Do you see any manufacturer info?

 

[Luis_C]

As short as that horizontal element is, my guess would be that this antenna is a UHF antenna; probably won't work well for civ air VHF. We've got a few homebrew designs that with a little work on the formula, will work just fine on civ air VHF on our scanner antennas wiki page, depending on height and any obstacles. A plain old ground plane, mounted nice and high and fed with the correct coax, will do just fine.

73s Mike

Checked it out, if I can get a N-Male with a Square Flange I'll try to do it. Doesn't look too hard. Thanks

Can I see another picture with a different view? Do you see any manufacturer info?

Sure, I can get another view, it had a sticker with the manufacturer info, there you can see it a bit, but the sun and rain finished it.







You guys rock.