Join Date: Oct 2000
Location: Portland, OR
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Re: Compass Location
Compass-Safe distance is normally listed in the "install" docs with the instruments.
Have a look at this in their on-line manuals. Either at the Raymarine site or third party sites.
I found one easily by searching "ST 40 install manual"
Based on experience, I would not expect any interference. Proly better to keep 'em a foot apart, tho.
Those were good quality basic instruments, albeit a decade ago. We still have the next model up from that, the ST-60 wind, speed, and depth, and they look and work perfect. DO keep the cover on it when not using it, to protect from UV and rain.