Author Topic: AIS antenna with its range modified?  (Read 2994 times)

Aamir

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AIS antenna with its range modified?
« on: 16 April, 2014, 07:27:39 am »
so the place i am working at got a quotation to supply an AIS antenna which has a range of 180 deg... as far as I understand, commercially available AIS antennas are omnidirectional.
so my question is,

are there any VHF antennas which are not omnidirectional?
could i make a planer antenna by adding a reflector in the back?
or am i mistaken, and AIS antennas are not omnidirectional..


fkjradio

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Re: AIS antenna with its range modified?
« Reply #1 on: 07 May, 2014, 06:18:14 pm »
Hi
You can found lot of exemple on internet.
 Just search with " yagi 162 mhz"

73 jeje