Wind instrument - bird problems

[Alan Gomes]

So most of the problem with the Garmin G-Wind is they did not properly terminate the RS485 bus at the GND-10. The underlying up/down mast is the old school Nexus network, from when the instruments were made by Silva.

Anyhow, the fix is pretty simple. Add a 120ohm resistor across the data pair down at the gnd-10 end (or close by) and the unit becomes extremely reliable.

We actually figured this one out trying to troubleshoot things, and noticed that it was stable/reliable when we had our old Nexus Wind head unit connected to the nexus side, and unstable with it disconnected. Put two and two together (I'm a computer Engineer old enough to remember termination resistors) and boom. Done. It's now worked reliably for 2 years, except for a brief period when the up-mast connector got filled with bird crap.

Did you let the techs at Garmin know?

 

[hjohnson]

Did you let the techs at Garmin know?

Yeah, we had been troubleshooting it with them, they even swapped out our unit under warranty. We let them know, but I guess Garmin support is going to be Garmin support, and not actually learn anything.

 

[Alan Gomes]

Yeah, we had been troubleshooting it with them, they even swapped out our unit under warranty. We let them know, but I guess Garmin support is going to be Garmin support, and not actually learn anything.

Well, you did what you could do.

 

[Pete the Cat]

We may not have the same product. T101?

And I'm not sure they fit, since not yet installed. About $20, various vendors.

Raymarine TA101 Replacement Wind Cup Set for Anemometer

Wind Transducer Cups for All Wind Transducers by Raymarine. The TA101 is a Replacement Wind Cup Set forAnemometer from Raymarine. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...

uspmarine.com

OK. I have a Ray Marine (formerly Tack Tik) wireless anemometer transducer that broke a cup off---probably a boatyard mess up. I just took the mast down for the winter and replaced the cups. . The replacement cups and windvane both are held in place with a tiny screw and the parts cost $60 on Amazon. I had to replace the whole transducer unit on another boat and the part was $320 and the cup and vane were held in by a screw on that one. The picture of the part you show here does not look like it would work on the units I have repaired. I am not sure what is going on here....I do not see how you would attach the one in the advertisement.