Fri Mar 23, 2018 7:52 pm
I think he is referring to the rumor that some Allertors had the ability to do a yelp tone by briefly reversing the motor polarity. I do not think there was ever any physical evidence of one in the wild though...
Proud owner of a Fedelcode Mach. 3 (dual rotor), Model 2, 3 A’s, 2 D’s, J, 76A, Interstate Machines F, Sparton 35, & Darley C987
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25, engineer, and has an affinity for old sirens!