Hello,

I purchased an AIS 650 unit last June and had a certified installer/boatyard put it in.  I have recently realized that only vessels within 1/2 mile can see our AIS signal.  We have no trouble seeing anyone else but vessels have to be way too close in order to see us.  I am wondering if there is a low/high power setting somewhere that I can adjust although I looked at the software interface that came with the unit and didn't see those options.  The unit is connected to a new E7 that we bought at the same time I am assuming via sea talk.  Any thoughts?

Brian

Views: 1139

Reply to This

Replies to This Discussion

Welcome to the Raymarine Technical Forum Brian,

Class B AIS transceivers transmission power is limited to 2W.  This is essentially a VHF signal and one may typically assume a range of 1 nm/W of transmission power.  As VHF signal transmissions are line of sight, antenna height will also have an affect upon range.  It is recommended that the VHF antenna w/any extension may be tested with a VSWR meter or with the ProAIS2 application.  With a good antenna, cable, coupler assembly, the measured VSWR should be in the range 0.8:1 - 2.0:1.  Should the antenna's VSWR be within this range, then it is recommended that AIS650 be sent to Raymarine's Product Repair Center to be tested/serviced.

Ok, I think I have found the problem. The installer apparently used a receive only antenna splitter made by Glomex. The AIS receives great but as stated above we get very short transmit range. My question to you is this - is the Raymarine AIS 100 antenna splitter appropriate for use with the AIS 650 transceiver?

Thanks for your time.

Brian

Brian,

Use of a VHF antenna splitter which is not designed for use with CLASS B AIS transceivers may result in damage to the receiver section of the Class B AIS (ex. AIS650) and/or VHF radio.  Class B AIS antenna splitters such as the A80190 AIS100 Active Antenna Splitter are designed to support interfacing a Class B AIS transceiver and a VHF radio to a single VHF antenna.  Class B AIS antenna splitters are designed to protect the receiver of each device from the other devices transmissions.

Reply to Discussion

RSS

Events

Videos

  • Add Videos
  • View All

Photos

  • Add Photos
  • View All

Latest Activity

Chuck Rich updated their profile
Feb 17
William Lakso updated their profile
Feb 16
Donald Evans commented on Donald Evans's album

NMEA cable

"These cables are available on ww.gps-galore.co.uk and ebay. Bought one myself. The connector is a slightly different shape on the outside but it fits perfectly."
Feb 8
Igor Stelli updated their profile
Feb 1
Gregor Popp updated their profile
Jan 30
Michael Carson replied to Will Ritch-Smith's discussion EV1 wheel jerking back and forth
"I am having the same problem and this is very frustrating. EV1 with ACU400 p70 and rudder position sensor.  Vessel is a 53' sailboat. Displacement is approx 55,000lbs. Steering system is a Whitlock Mamba and the drive unit is a Robertson…"
Jan 27
Rogelio Finoli replied to Andrew Sonis's discussion "no compass" alarm on ST70
"Hi, I´m having problems with, apparently; the compass. I did the tests you suggested and my readings were 6 and 6.1 instead of 4 ohms, and 9.6 or so instead of 8 ohms, all the rest open as you mentioned. May I assume that the compass is…"
Jan 22
Eric West updated their profile
Jan 15
Mark Chapman updated their profile
Jan 12
aaron sherman updated their profile
Jan 10
Craig T. Olsen updated their profile
Dec 31, 2017
David Lane replied to Tiago Menezes's discussion Night mode
"Good day and happy new year to this forum group.   Question: When can we expect Raymarine to ad a night color palette to its line of MFDs?  It’s been talked about in this forum for at least 3 years.   I am 100% satisfied with…"
Dec 31, 2017
Bob Atkins replied to Bob Atkins's discussion Current C-MAP NT+ and NT chart chips do NOT work properly on RL70C
"Hi Thomas, Please read the moderator's instructions on April 8, 2013 and my posting on October 31, 2013 on page 1 of this discussion. The issue has to do with the Plotter Mode setting. The Plotter Mode must be OFF for all…"
Dec 30, 2017
THOMAS A RICH replied to Bob Atkins's discussion Current C-MAP NT+ and NT chart chips do NOT work properly on RL70C
"Good Morning, I also have a Rl80 with the old chip and has worked perfect without any updates except last month it performed exactly as you described.  The maps I have always used now say no Data.  I was going to buy a new chip, but not…"
Dec 30, 2017
Northlightinvest replied to Ben Campbell's discussion Wheelpilot Broken Part
"Dear raymarine team! Please, give information, that where can I order this part from Hungary. 3001-984-B Thanks!"
Dec 27, 2017
Russ Colombo left a comment for lee christiansen
"Lee: Guilty as charged, now gleeful denizen of Marco Island and still sailing.  How good of you to contact, and what news??? "
Dec 14, 2017

© 2018   Created by Moderator - Raymarine, US.   Powered by

Badges  |  Report an Issue  |  Terms of Service