Ben I have an idea I have a spare ACR AIS B transponder I will run it into a 20db tap then a (0-110db) variable attenuator then into a dumy load. It has a different MMSI than mine since the signal will not really exit my vessel and I can control the level down to -100dbm I will see what happens if the target drops out or at what level it drops out (I can do this with a simple path loss equation even in feet. It suspect it could be as simple as your AIS antenna and or its switching antenna circuit is causing the drops or loss of signal. Or perhaps (nothing new) I am not understanding the problem. On my 4210 & 4212 I can show the MARPA or AIS targets with no audio alarm unless I activate the target? If I am not understanding the problem which to me is either one of 2 problems your antenna or switching antenna circuit is not up to a task or the other AIS target is not transmitting when it should be or the proper intervals. I guess a possible third problem could be firmware/software issues. Please correct me if I totally misunderstand the problem. Since I have no AIS/VHF transciever single antenna combiner/switcher I can not measure the insertion loss of the device at each port compared to the antenna port.Bill
C5x0The Streetpilot c500 series (includes c510, c530 and c550) was launched in March 2006, updating the c300 with SirfStarIII GPS chipset, new software and a slimmer footprint.The c580, released in February 2007, was offered with MSN direct traffic service.
3x0 310 and 360 models were released in June 2006 and succeed 300 and 350 with the same footprint, updated software and added bluetooth capability. The nüvi 370 and 670 models added intercontinental mapping to the capabilities of the 360 and 660 models.
In Q1 2016 Garmin introduced the echoMAP CHIRP series which features CHIRP sonar technology. Other new features: Garmin Panoptix sonar support (7- and 9-inch models), Quickdraw Contours software and NMEA 2000 compatibility (5-,7- and 9-inch models).
Personal AIS-enabled rescue beacons are becoming more popular to help crews locate a Man Overboard. These transmit an MMSI number with the prefix of 972 to identify them. Up-to-date chartplotters will display these correctly, but older ones may need a software update to correctly identify the signal and give you the option of initiating a Man Overboard based on its position.
Like any power meter, getting the Quarq installed will vary depending on what your current bottom bracket setup is relative to whatever you bought from Quarq. If you were smart, you bought the same bottom bracket setup, and thus your installation is pretty quick and easy. If instead you elected to introduce unnecessary pain and confusion, then you bought some other standard and now need to also convert your bottom bracket. That, in turn, may be easy, or you could spend all day waiting for glue to dry.
I have a Dzero eagle xx1 and it seems to be significantly under reading (by about 10- 15%) compared to my quarq red road unit and previous legacy model xx1 quarq (which it is a warranty unit for). Will updating to V4 software help this?
If you do couple of hard sprints on both rings it may take 30 minutes. There is no rule that readings go up or down. It depends on your setup and how zero offset value change until it stabilize (it may go both ways). 2b1af7f3a8