[CQ-Contest] Pro sis tel rotors

Mike Kasrich aj9c at indy.rr.com
Wed Feb 14 17:07:22 EST 2007

Anyone out on the list have this brand of rotor?  Im interested in 
whether you have had problems with the rotor freezing up in cold wx.  We 
had a prolonged period of wx below 20 and below zero and the rotor has 
stopped turning here.  The one day where it approached 30 it worked 
fine.  Was wondering if there was a fix or if this was just a horrible 
choice of rotor on my part.

It's interesting on my small tower I have a HD-73 and it turns just 
fine, slow when the temp is 8 below but it turns.  Never had an issue 
with the Ham IV I had up at my other location either.  Is this just a 
cse of fine I-land engineering down to 0C only or is there a fix of 

You can reply off list if you wish.


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