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16-01-2017, 12:58
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#1
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Registered User
Join Date: Aug 2012
Location: Cruising the Gulf of Mexico.
Boat: 1980 Morgan 415
Posts: 1,452
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Marine radio w/ AIS transceiver
Has anyone heard of a VHF with AIS class B transmit capabilities? Sure would be a selling point. No splitter, AIS dedicated antenna or unit.
__________________
Working on spending my children's inheritance.
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16-01-2017, 13:27
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#2
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Registered User
Join Date: Nov 2014
Posts: 1,611
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Re: Marine radio w/ AIS transceiver
Standard Horizion is now advertising their GX6500 Quantum radio with GPS and an integrated class B AIS transponder......
DougR
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16-01-2017, 14:10
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#3
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Registered User
Join Date: Aug 2012
Location: Cruising the Gulf of Mexico.
Boat: 1980 Morgan 415
Posts: 1,452
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Re: Marine radio w/ AIS transceiver
Thanks. It seems it still requires the second antenna therefore lacking the biggest selling point for me. It looks like a hell of a unit though.
__________________
Working on spending my children's inheritance.
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16-01-2017, 14:24
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#4
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Registered User
Join Date: Jan 2015
Location: Victoria BC
Boat: Rafiki 37
Posts: 1,390
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Re: Marine radio w/ AIS transceiver
I think the AIS B standard actually requires a dedicated antenna/splitter
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17-01-2017, 09:05
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#5
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Registered User
Join Date: Apr 2016
Location: Back on dirt in Florida
Boat: Currently in between
Posts: 1,338
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Re: Marine radio w/ AIS transceiver
I'm certainly no expert here, as evidenced by some successes and some fails over the years. I have found some things simply don't lend themselves to a shared antenna, the two units don't play well with each other when fighting over the antenna.
Whereas one antenna might be nice it seems two may be required to optimize, or even work at all.
__________________
SV Bacchus - Living the good life!
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17-01-2017, 09:53
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#6
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Registered User
Join Date: Jan 2013
Location: Seattle
Boat: Snipe, Roughwater 41, and Islander 36
Posts: 239
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Re: Marine radio w/ AIS transceiver
Class B AIS transponder requires a different separate antenna. Instead of putting in a splitter, I mounted my AIS antenna above my radar which is gimballed on the backstay. Ocean passages have offered the oppotunity to know that my AIS antenna is mounted high enough to "be seen" when transmitting for plenty of distance "out there". The antenna is approximately 24 feet above the water.
Be prepared for the bridge (persons on watch) of the big ships to not respond to you when you hail them on VHF to confirm that they "see" you and to confirm that they are on a course that will not collide (this is when you are outside of the shipping lanes and you are under sail in open water). Usually I have to state their exact position (from radar), or state their MMSI number that shows on my AIS transceiver to get them to answer VHF Channels 16, 12, 13 or 9. Each time they have confirmed that they "see me" on AIS and confirm my MMSI number.
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17-01-2017, 10:28
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#7
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Registered User
Join Date: Apr 2011
Posts: 689
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Re: Marine radio w/ AIS transceiver
Vesper 850 I have works great with Vesper splitter sharing with VHF. I haven't ever heard of a requirement of stand alone antenna although that has some benefits. I believe the requirement is it must have its own GPS receiver/ antenna.
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17-01-2017, 12:22
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#8
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Registered User
Join Date: Nov 2015
Location: Ireland
Posts: 466
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Re: Marine radio w/ AIS transceiver
A Class B AIS transponder does not require a separate VHF antenna, a splitter works just fine. Legally it does have to have its own GPS, this may or may not require an external GPS antenna.
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17-01-2017, 13:18
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#9
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Registered User
Join Date: Aug 2011
Location: West Sussex, United Kingdom
Boat: Tradewind 33, 33 foot, Parker 27 , 26 foot
Posts: 496
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Re: Marine radio w/ AIS transceiver
Quote:
Originally Posted by SV Bacchus
I'm certainly no expert here, as evidenced by some successes and some fails over the years. I have found some things simply don't lend themselves to a shared antenna, the two units don't play well with each other when fighting over the antenna.
Whereas one antenna might be nice it seems two may be required to optimize, or even work at all.
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I have had the Standard Horizon GX2100 tranceiver with AIS on my yacht for two years using shared antenna and it works great!
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17-01-2017, 20:05
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#10
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Registered User
Join Date: Aug 2012
Location: Cruising the Gulf of Mexico.
Boat: 1980 Morgan 415
Posts: 1,452
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Marine radio w/ AIS transceiver
Quote:
Originally Posted by Martkimwat
I have had the Standard Horizon GX2100 tranceiver with AIS on my yacht for two years using shared antenna and it works great!
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Your AIS is receive only though.
__________________
Working on spending my children's inheritance.
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17-01-2017, 21:27
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#11
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Moderator
Join Date: Sep 2014
Location: Channel Islands, CA
Boat: 1962 Columbia 29 MK 1 #37
Posts: 14,262
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Re: Marine radio w/ AIS transceiver
Quote:
Originally Posted by DougR
Standard Horizion is now advertising their GX6500 Quantum radio with GPS and an integrated class B AIS transponder......
DougR
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Is it out already? I thought it was scheduled for this spring.
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18-01-2017, 13:10
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#12
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Registered User
Join Date: Aug 2012
Location: Cruising the Gulf of Mexico.
Boat: 1980 Morgan 415
Posts: 1,452
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Re: Marine radio w/ AIS transceiver
Not till next month at least from what read.
__________________
Working on spending my children's inheritance.
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18-01-2017, 14:26
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#13
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Registered User
Join Date: Nov 2016
Boat: '95 Catalina 30
Posts: 44
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Re: Marine radio w/ AIS transceiver
I don't think the S.H. GX6500 AIS class B transceiver is FCC approved yet...
It doesn't come up searching on the SH website but, is listed in the 2017 brochure.
I will keep an eye on Icom for a new VHF integrated class B transponder as well.
Cheers!
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18-01-2017, 15:56
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#14
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Registered User
Join Date: Nov 2016
Boat: '95 Catalina 30
Posts: 44
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Re: Marine radio w/ AIS transceiver
I agree with S V...
Ideally, there's a separate GPS (receiving) antenna for reliable identification of ships. AIS transmission occurs on VHF, not at microwave frequencies such as GPS. Hence,
to reduce signal distortion, use separate VHF, GPS antennas.
S.H. brochure states the new GX6500 Quantum Class B pkg includes a GPS antenna.
Jim, AB1BR
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18-01-2017, 18:25
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#15
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Registered User
Join Date: Aug 2012
Location: Cruising the Gulf of Mexico.
Boat: 1980 Morgan 415
Posts: 1,452
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Re: Marine radio w/ AIS transceiver
Priority given to VHF, its antenna resides on the masthead on my boat. 53' off the water. The AIS antenna is on my "H" beam. 11' off the water. Getting ready to rewire my mast and was curious about new gear available. I am happy with my Vesper but the extra range would be a plus. Am considering the spreaders. Am not wanting an external splitter.
__________________
Working on spending my children's inheritance.
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