MB1200 sonar operating temperature

I have read that the MB1200 doesn't like low temperatures. My one stops working at about 25 deg C. I have to warm it up to about 29 deg before it starts to show a reading in the CLI (20 cm).Does this happen to anyone?

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  • 25C!  The specs say -40C to +65C.  Mine has worked happily in ~10C weather.

    What does(n't) it do when it stops working?

    They are very sensistive.  Anything within about +/- 45 degrees (e.g. wires, landing gear) will be picked up.  Mine can "see" a single wire fence from about 2m up.

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