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: 747

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

Loading…
  • Add Photos
  • View All

Latest Activity

Wim Bakker updated their profile
2 hours ago
Bart Bylsma updated their profile
2 hours ago
Marc Southard replied to Marc Southard's discussion ST70 Autopilot and NMEA 2000
"Hello!? It's a simple question: RS232 or RS422? "
3 hours ago
Joseph Ventimiglio commented on Daryle Balao's video
Thumbnail

Whales while salmon fishing.

"Where was this? "
16 hours ago
Per Andersson updated their profile
yesterday
Rick McCowan replied to David Anderson's discussion ST60+ Wind Repeater to Master
"Hey, is anyone out there? How do I determine if the sensor or the display is at fault? My multimeter shows voltage from each connection on the sensor to the display. Sometimes the display acts as a master and sometimes as a repeater. ...although it…"
Saturday
Rick McCowan replied to David Anderson's discussion ST60+ Wind Repeater to Master
"Update... The display is now coming up as the master but with no movement of the wind indicator and knots are 0.0. "CAL" is flashing but circling the boat does not seem to affect anything. Does this point to problems with the display or…"
Saturday
Neal replied to Neal's discussion I70 update looses settings
"Actually, my last update this spring which included three updates to my e-7 charplotter and one update to the i70 seemed to retain the i70 pages when I restored the system through the chartplotter while using my backup settings.  The only thing…"
Friday
Rick McCowan replied to David Anderson's discussion ST60+ Wind Repeater to Master
"I have power readings from each masthead sensor wire reaching the ST60 wind master display but the display still powers up as a repeater. Why does it not recognize the sensor and power up as a master?"
Thursday
Marc Southard replied to Marc Southard's discussion ST70 Autopilot and NMEA 2000
"I've connected the B&G MFD to the X10 course computer. Question is: should I use RS232 or RS422 protocol for the connection? Question 2: since the X10 connects over both N2K and NMEA0183, does it give priority to one protocol over the…"
Thursday
Tom Falck replied to Neal's discussion I70 update looses settings
"+1 on providing a mean to backup and restore i70 settings!  Or, at the very least include a warning when doing an MFD update to manually record ALL of your settings on your peripherals - the backup only backs up the MFD settings!. I have 6 i70s…"
May 24
Joel Richardson replied to Joseph Myerson's discussion Error message "2000" on my ST2000+ autopilot
"I have same problem. It is only one year old. Will I need to send it in for repair? Joel"
May 21
Diana Morgan replied to Clarence Harvey's discussion No Goto or Stop goto Functions on E80
" "
May 20
Dave replied to Scott Gooding's discussion EV-100 Power autopilot produces sonar interference
"I have the same problem with a recently installed ev100 and my e127. I connected rf ground to my ground bus, installed a suppression ferret to the Acu & pump power and isolated the transducer cable from the autopilot. I also updated all the…"
May 19
Stéphane updated their profile
May 12
steven philips updated their profile
May 9

© 2016   Created by Moderator - Raymarine, US.   Powered by

Badges  |  Report an Issue  |  Terms of Service