T&T: Airmar Speed Transducer

[Peter McCorison]

Joel Truher wrote:
> actually the "smart transducer" is different.  all it does is combine
> a paddlewheel with a NMEA interface.  it works fine, but it's not
> calibratable (e.g. for keel offset).


Joel,

The calibration for the "smart transducers" is performed in the Furuno 
RD30 display unit. Coho has that arrangement and the calibration is as 
good as I have patience to measure, and pretty easy to do. I like the 
combination.

Regards,

Peter McCorison
M/B Coho. 50' Marco Trawler; 1955
Orcas Is. Washington