antenna

>
> Looking at Martys page, I was wondering if I was getting ripped on rubber
> duckies.
> Claiming 7 dbi. No, I took one apart. There is multiple sections and a
> coil. So with some reflection I should get reasonable gain after all. I
> would have to use a screen on the biquad to remain more invisible. I had
> access to Copper screen, but not now.
>
> Greg

I'm dubious about some of these little duckies claiming 5dbi or 7dbi.
You can't fight physics.

A reflector at the wrong distance can actually be worse. If you really
want to add a reflector to a duckie, I'd look up corner reflector antenna.

Actually I'm drawing a blank here. You want what looks like a corner
reflector, but it is on a ground plane. It looks like a V with the
bottom solid. The corner reflector is just a plane V and usually used
with dipoles.

>
> Looking at Martys page, I was wondering if I was getting ripped on rubber
> duckies.
> Claiming 7 dbi. No, I took one apart. There is multiple sections and a
> coil. So with some reflection I should get reasonable gain after all. I
> would have to use a screen on the biquad to remain more invisible. I had
> access to Copper screen, but not now.
>
> Greg

I'm dubious about some of these little duckies claiming 5dbi or 7dbi.
You can't fight physics.

A reflector at the wrong distance can actually be worse. If you really
want to add a reflector to a duckie, I'd look up corner reflector antenna.

Actually I'm drawing a blank here. You want what looks like a corner
reflector, but it is on a ground plane. It looks like a V with the
bottom solid. The corner reflector is just a plane V and usually used
with dipoles.

miso <(E-Mail Removed)> wrote:
>>
>> Looking at Martys page, I was wondering if I was getting ripped on rubber
>> duckies.
>> Claiming 7 dbi. No, I took one apart. There is multiple sections and a
>> coil. So with some reflection I should get reasonable gain after all. I
>> would have to use a screen on the biquad to remain more invisible. I had
>> access to Copper screen, but not now.
>>
>> Greg
>
> I'm dubious about some of these little duckies claiming 5dbi or 7dbi. You
> can't fight physics.
>
> A reflector at the wrong distance can actually be worse. If you really
> want to add a reflector to a duckie, I'd look up corner reflector antenna.
>
> Actually I'm drawing a blank here. You want what looks like a corner
> reflector, but it is on a ground plane. It looks like a V with the bottom
> solid. The corner reflector is just a plane V and usually used with dipoles.

I can see the ground plane helping.
It would probably make the curved cardboard/foil reflector work with a
bottom plate.
I didn't tell I was also fooling with it. Hard to test antennas around
reflections.

I'm not going further yet. My preliminary test with flat reflector looked
good in the near field. One inch spacing seemed optimal.
I'm ordering another linksys router. I want to get that repeating a
repeater working.

Greg