Wi-fi antenna - omni vs. yagi
I'm looking at adding a booster/repeater system to our travel trailer, in the hopes of getting some better access to CG wifi. I understand that it probably won't be able to stream movies, etc. but I ...
Forum Discussion
I do understand the difference between "Dual" and Circular.
If you are using a 'Flat' antenna (either vertical or horizontal and the access point is a dual. then your picking up -3DB from if it were mono-polarized and you were matched.
IF it's circular.. about the same result.
The difference is this.. If you point two antennas both designed for the SAME polarisation (Circular) you get full power..
But you can also point two more circular antenna pairs, With the OTHER polarization.. ON exactly the same frequncy,, and Not one bit of intrference?
Why is this.
Screw a right hand nut on a right hand bolt it goes on easily
And a left hand nut on a left hand bolt.. Same.
But A Right hand nut will not go on a left hand bolt or the other way around.
And the same is true of circular polarized signals.. They cimply can not "Screw onto" the other direction antenna.
Also setting up circular polarization takes a somewhat larger antenna than what you find on roters.. Dual polarity is easy however.
If you are using a 'Flat' antenna (either vertical or horizontal and the access point is a dual. then your picking up -3DB from if it were mono-polarized and you were matched.
IF it's circular.. about the same result.
The difference is this.. If you point two antennas both designed for the SAME polarisation (Circular) you get full power..
But you can also point two more circular antenna pairs, With the OTHER polarization.. ON exactly the same frequncy,, and Not one bit of intrference?
Why is this.
Screw a right hand nut on a right hand bolt it goes on easily
And a left hand nut on a left hand bolt.. Same.
But A Right hand nut will not go on a left hand bolt or the other way around.
And the same is true of circular polarized signals.. They cimply can not "Screw onto" the other direction antenna.
Also setting up circular polarization takes a somewhat larger antenna than what you find on roters.. Dual polarity is easy however.
