The General User Licence for LPFM does not state anywhere that the antenna should be omni-directional.
You can use a 10 elements Yagi if you want.
As long as it is vertical polarized, and… as long as:
The maximum radiated power shall not exceed 0 dBW (1 W) e.i.r.p.
Which means, you would feed about 100 mWatt into such an antenna to get the 1 Watt e.i.r.p. (in one direction)
And while the example of a 10 elementrs yagi may be over the top, I can easily see situations where stations are close together, where 3 or 4 elements yagi’s can be used to beam the tranmission into the required area of Station A, while reducing the signal into an area of another station B, to reduce interference!
This is a dual band dipole antenna
With reflector, essentially a Yagi and directional in nature.
The General User Licence for LPFM does not state anywhere that the antenna should be omni-directional.
You can use a 10 elements Yagi if you want.
As long as it is vertical polarized, and… as long as:
The maximum radiated power shall not exceed 0 dBW (1 W) e.i.r.p.
Which means, you would feed about 100 mWatt into such an antenna to get the 1 Watt e.i.r.p. (in one direction)
And while the example of a 10 elementrs yagi may be over the top, I can easily see situations where stations are close together, where 3 or 4 elements yagi’s can be used to beam the tranmission into the required area of Station A, while reducing the signal into an area of another station B, to reduce interference!
Bart