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Simple but effective DIY civil/mil airband antenna the "double bazooka"

Joined
Feb 28, 2019
Messages
133
#3
Should have included this above... only mistake I've made all year! (You believe that, right?)

The other "secret" is to make the/an antenna as resonant as is practical (not as possible, but practical). Resonance equates to efficiency (sort of), and that efficiency is desirable in most cases (not all, but in most cases). There always seems to be a "gotcha" with this stuff ain't there?
 

krokus

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Premium Subscriber
Joined
Jun 9, 2006
Messages
3,686
Location
Southeastern Michigan
#5
The drain hole is a good idea, but would suggest smaller holes, or a small patch of fiberglass window screen applied over the hole, to prevent insects from entering the antenna housing.

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Joined
Feb 28, 2019
Messages
133
#6
The "bazooka" (single or bouble) antenna has been around for over 50 - 60 years. It works, but don't hold your breath for 'miracles'. They also have a few draw-backs depending on design frequency, as they get heavy and sort of expensive. Even at VHF/UHF frequencies you don't see very many of them. Ever wonder wmy? I got a hole out of a donut I'm willing to bet that it has to do with efficiency. Wanna bet?
 
Joined
Sep 19, 2018
Messages
34
Location
Near Liverpool,UK
#7
I see plenty of commercial airband VHF and UHF folded dipoles, they are heavier, ...nothing fantastic and they have holes in the middle as well.
Oh and they are more expensive, willing to bet the hole and the weight has something to do with maintenance, the xtra expense well thats for the weight of the hole or "good ol nickel and diming" the client.
 
Joined
Jun 30, 2006
Messages
7,533
Location
So Cal - Richardson, TX - Tewksbury, MA
#8
In the US I see mostly ground planes, Discones, coaxial dipoles and fat dipoles inside radomes for base station aviation use but I can't say I seen a single folded dipole for the same. There is no reason you can't but apparently its just not popular here.



I see plenty of commercial airband VHF and UHF folded dipoles, they are heavier, ...nothing fantastic and they have holes in the middle as well.
Oh and they are more expensive, willing to bet the hole and the weight has something to do with maintenance, the xtra expense well thats for the weight of the hole or "good ol nickel and diming" the client.
 
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