[TowerTalk] Over heated cores

["Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>]

I have several 2.4" OD cored. Will overheating cause their properties to 
change after they cool down  I have 2 out of an AV640 that now have a 
dull surface. I have quite a few new ones, so replacing them is not a 
problem, but at near $5 each I'd like to save them if they are any 
good.  The material is nor cracked/fractured.
73

Roger (K8RI)

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