Be sure to check your 12 volt supply voltage -- maybe a poor connection. The
706 is very sensitive to low supply voltage. (note your comment that it
works a little better when the engine is running). Check out the mobile
with an external, fixed 13 volt supply and see if the problem goes away.
I use a Battery Booster on mine and all is OK.
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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