Garmin /tm 150 details

Anyone that has Garmin TM 150 hooked up, friendly FYI
the "pause sonar" item on your menu doesn't stop the transducer from pinging. It merely stops the screen from advancing.
the " Stop Transmission" menu stops the tm150 from pinging.
I may have ruined mine due to this little detail.

i took the boat out today for a test and the 840 was barely reading the bottom In 20 ft of water. Reset everything to factory , no difference.
Max gain, no difference,
its either the 840 or the 150, but something is wrong.

Tm150 is ticking along very well,
the lowest MHz I can get it to accept is 100

That's weird. The frequency spread is 95-155. You should be able to get all of those.

Just tried again,
100 is the lowest allowed.
i hope that cone is not super small.
im fishing 20-30 ft

Maybe I'm off, but wouldn't the 100 be the widest cone, and the 155 Hz the narrowest?

This is what my unit says, but this is the GT50, not the TM150.

http://i935.photobucket.com/albums/a...psjyhdytxn.jpg

Quote:

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Originally Posted by vic n

Maybe I'm off, but wouldn't the 100 be the widest cone, and the 155 Hz the narrowest?

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Yes