Antenna onto S/S pole ?

[Tex]

I am thinking of fitting an AIS transponder antenna onto a S/S pole fixed to stern rail.
The extra height hopefully giving a bit more range and protection of crew from any transmission effects.

Where can I get a fitting to fix to the top of the pole to accept the standard 25mm 14x tpi thread on the antenna?

Thanks

 

[sailorman]

why on a pole, mine works perfectly on the stern rail

 

[theoldsalt]

View attachment 37496

Something like this?

This is what a previous owner fitted to my boat but I don't know where it was sourced.
I thought the photo might be helpful

 

[rogerthebodger]

Lots of different types here

http://aaaworld-wide.com/index.php?cPath=7

But don't know supplier local to you.

 

[LadyInBed]

Any s/s fabricator will make up a top to go on a pole!
But get it made up to take several items.

 

[Salty John]

To fit a 1-14tpi base antenna, such as GPS antennas and some vhf antennas, to a plain 1" tube you need an adapter which has a 1" hole in the base with allen screws to secure it and the 1-14tpi male at the other end, about 2" long. Google antenna mast adapter - I've seen them in the UK, about £10.00.

You can also buy extension poles that have the 1-14tpi thread on the end - Glomex make one, amongst others.

Our AlphaOne whip antenna uses an adapter so you can fit it to a 1-14tpi base. A whip antenna with it's broad radiation pattern mounted on a pole is a really good arrangement:
http://www.saltyjohn.co.uk/alpha_one_vhf_antenna_aerial.htm

 

[rogerthebodger]

1 " antenna base

To fit a 1-14tpi base antenna, such as GPS antennas and some vhf antennas, to a plain 1" tube you need an adapter which has a 1" hole in the base with allen screws to secure it and the 1-14tpi male at the other end, about 2" long. Google antenna mast adapter - I've seen them in the UK, about £10.00.

Like this.

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[Salty John]

Yes, from AAA, the one on the left - I think Sea Screw has them in UK, probably others.

 

[Tex]

Thanks for the help, I now know what I need