Re: AIS class B transceiver
2w power, but where is the aerial. It cant be up the mast otherwise everytime you transmit on vhf, there is a good chance of bleed through to the AIS receiver. so it will end up on the pushpit. What is the range of vhf when the aerial is only 2m above sea level - well that will depend on the receiving aerial, but between 5-7 miles. modern merchant travelling at 20 knts looking at the display abt once every 30 minutes? - it will only take 20 minutes to travel to you. [img]/forums/images/graemlins/frown.gif[/img] I rest my case.
And in any case, I much prefer knowing where they are before they know where I am, so that I can manipulate CPAs enough so that I dont have to rely on a merch changing course, that way I feel more in control of what is going on.
"Be wary of strong drink. It can make you shoot at tax collectors - and miss."
Robert A Heinlein