Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 13-11-2012, 16:00   #1
Registered User

Join Date: Jul 2011
Location: Annapolis
Boat: Gozzard 41
Posts: 23
AIS Antenna

Gang,
What is the best VHF antenna for AIS? Does it not matter?

Thanks,
Frank,
Eleanor Q
__________________

__________________
Eleanor Q is offline   Reply With Quote
Old 13-11-2012, 16:25   #2
Moderator
 
Pete7's Avatar

Cruisers Forum Supporter

Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 8,552
Images: 14
Re: AIS antenna

We have a normal 1.2m wire one on a 2m pole on the stern, gets us an AIS range of about 5 - 6 miles. You might get more with height but mastheads are already pretty crowded. Also if it's in a vunerable location one of those short rubber ones might last longer from clumsy hands.

Metz have a good reputation in Europe.

Salty John: Metz Manta Marine VHF Antenna plus Metz AIS antenna and other fine boat and yacht chandlery products.

Pete
__________________

__________________
Moody 31 - April Lass
Pete7 is online now   Reply With Quote
Old 13-11-2012, 17:14   #3
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,150
Re: AIS antenna

This one has been working fine for me....
Shakespeare Antenna Specifications: Shakespeare 396-1-AIS Broadband VHF
__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 13-11-2012, 18:07   #4
Senior Cruiser
 
44'cruisingcat's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Posts: 7,454
Images: 69
Re: AIS antenna

Worth getting a decent one, it could be used as an emergency VHF antenna too. It should be mounted well away from the "real" VHF ariel anyway.
__________________
44'cruisingcat is offline   Reply With Quote
Old 13-11-2012, 18:26   #5
Registered User

Join Date: Jun 2012
Location: Redmond, WA
Boat: Bavaria 47, 48ft
Posts: 38
I use the regular radio VHF antenna via an active splitter. I think they claim near zero loss and it also has an FM output.
I get 350 miles AIS reception range on the pacific west coast (via repeaters I'm guessing) and about 50 miles here in Mexico. My VHF radio is pretty new (Standard Horizon) and I had a good chat with a boat 75miles away a couple of days ago so I guess the low loss part is working

The splitter I'm using is this one: http://www.em-trak.com/PRODUCTS/Acce.../Splitter.aspx
Westmarine carries them.
__________________
SV_Inspirare is offline   Reply With Quote
Old 13-11-2012, 18:31   #6
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,314
Re: AIS antenna

Ours is a shared 1 ft stub. Max range (from within a harbour closed with seawalls) about 15 Nm. Better when outside. Receiver only here.

For a standalone I would buy one of the dedicated units which are supposed to be fine tuned for AIS frequencies.

I think to max out the range (if desireable) a quality low loss cable will count just as much.

b.
__________________
barnakiel is offline   Reply With Quote
Old 13-11-2012, 20:18   #7
Registered User

Join Date: Sep 2008
Location: Camden, ME
Boat: A Thistle and a Hallberg-Rassy 36
Posts: 664
Re: AIS antenna

My boat had a nice Metz antenna for AIS on the stern pushpit when we bought it. Had very good AIS reception with it, typically 20 nm or a bit more for commercial vessels. We thought it was clear of the wind generator blades, but we were wrong. In a seaway, the antenna aerial met a blade and the aerial broke at the base. We still picked up vessels up to about 5 nm away. As a stop-gap measure, I attached a 3 ft piece of wire to the Metz base. Of course it doesn't stand up, it curls over and down, but it functioned as well as the original antenna.

I eventually turned the Metz base upside down, and let the 3 foot wire hang straight down. I lives there very well and provides good AIS reception.
__________________
SoonerSailor is offline   Reply With Quote
Old 13-11-2012, 21:04   #8
Senior Cruiser
 
hpeer's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: Philadelphia
Boat: Murray 33-Chouette & Pape Steelmaid-44-Safara-both steel cutters
Posts: 3,899
Re: AIS antenna

We have a steel boat. I bought a magnetic mount from a Ham shop and plunked it on the cabin top. Works to 40 miles for ships.

Could NOT have been easier.
__________________
hpeer is offline   Reply With Quote
Old 13-11-2012, 21:16   #9
Registered User
 
mbianka's Avatar

Join Date: Mar 2008
Posts: 2,125
Images: 1
Re: AIS antenna

I'm using Digital Yacht AIS AA10 Whip Antenna mounted on my radar arch. Works well and can be used as a back up emergency VHF antenna if the need arises.
__________________
Capt. Mike
mbianka is offline   Reply With Quote
Old 15-11-2012, 05:34   #10
Registered User

Join Date: Jul 2011
Location: Annapolis
Boat: Gozzard 41
Posts: 23
Thanks Gang!


Frank
__________________

__________________
Eleanor Q is offline   Reply With Quote
Reply

Tags
ais, antenna

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
AIS Antenna Splitter ChannelIslander Marine Electronics 21 13-04-2015 15:23
VHF / UHF HAM Radio Antenna ... and AIS? s/v Jedi Marine Electronics 63 25-08-2013 08:04
AIS Unit for Raymarine Chartplotter System mukilteomaniac Marine Electronics 4 23-01-2012 02:06
Route Properties, Missing Functions James Baines OpenCPN 13 13-07-2011 05:31
AIS Reception Issue twistedtree Marine Electronics 72 03-07-2011 04:57



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 03:50.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.