Hello all you antenna freaks
The location of my antenna is like this.
My potential listeners in %
To the front 75%
To the rear 22%
To the right 3% (but very close less than 100m, after that its mountains only)
To the left 0% (the sea)
So I am making my own atenna to cover the area
After many design hours I have come up with one
And this is what it will look like
. . . . . . . >
*NOTE*
All measurements are with a 2m long mounting pole connected to the boom (as pic).
The polar diagram
. . . . . . . >
The SWR at my chosen frequency comes out at 1.52649
The impedance at my chosen frequency comes out at 196.479
All I need will be a 4:1 balun using RG-213 like this
. . . . . . . >
Unless I come up with a better one that is (I'm never satisfied)
BB
Making my own Circularly Polarized Antenna
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- BriansBrain
- New registered user
- Posts: 6
- Joined: Wed Mar 06, 2013 6:24 pm
- Location: Gran Canaria, Spain.
- BriansBrain
- New registered user
- Posts: 6
- Joined: Wed Mar 06, 2013 6:24 pm
- Location: Gran Canaria, Spain.
Interesting indeed
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
- BriansBrain
- New registered user
- Posts: 6
- Joined: Wed Mar 06, 2013 6:24 pm
- Location: Gran Canaria, Spain.
It cetainly ispcs wrote:Interesting indeed
But it's a pig to design, the position of the mast in original
design is causing SWR problems, it's very critical
So..... Back to the drawing board
Many hours later I have come up with this beauty
Design. . . . . . . >
All measurements taken as picture (with a beam, fitted to a mast)
Using the 4nec2 Program
Rear Gain 2.29dbi
Front Gain 6.05dbi
SWR 1.02579
Imp 195.791 Ohm
Gain. . . . . . . >
SWR. . . . . . . >
Imp. . . . . . . >
Hor. . . . . . . >
Ver. . . . . . . >
And the best thing is the girlfriend likes it, she says it looks sexy
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- BriansBrain
- New registered user
- Posts: 6
- Joined: Wed Mar 06, 2013 6:24 pm
- Location: Gran Canaria, Spain.
For some reason only small pics came out this time
Anyone interested here are the full size Pics
Design. . . . . . . > http://postimg.org/image/d45rb3p53/
Gain. . . . . . . > http://postimg.org/image/xyszlkte7/
SWR. . . . . . . > http://postimg.org/image/7t99krvch/
Imp. . . . . . . > http://postimg.org/image/3w9fbg8cz/
Hor. . . . . . . > http://postimg.org/image/kvm0e5ylj/
Ver. . . . . . . > http://postimg.org/image/6peekxwar/
BB
Anyone interested here are the full size Pics
Design. . . . . . . > http://postimg.org/image/d45rb3p53/
Gain. . . . . . . > http://postimg.org/image/xyszlkte7/
SWR. . . . . . . > http://postimg.org/image/7t99krvch/
Imp. . . . . . . > http://postimg.org/image/3w9fbg8cz/
Hor. . . . . . . > http://postimg.org/image/kvm0e5ylj/
Ver. . . . . . . > http://postimg.org/image/6peekxwar/
BB