| Hi Duane, 
 No PTT on any of the 4 Hiel based microphones.
 
 
 Ron .... NU1U
 
 Duane A Calvin writes:
 
 
 Do you also use the PTT connections?   
 Paul's words were that pin 2 should never be tied to chassis ground. 
That is essentially what Heil's page recommends - a general
 recommendation, not Orion-specific.  (Pin 2 connects to the shield of the
 ProSet microphone cable.)  Also, Heil uses this pin as the return for the
 PTT switch, while Paul said this should go to chassis ground (i.e.,
 connector shell.)
 
 My original postings last month go into the detail of the problem - I
 won't repeat it here.  I do not think I have an RF problem, and still
 need to rule out ground loops.  That will hopefully happen this evening. 
The PTT may have something to do with it (I use the Heil footswitch with
 their ProSet Ten-Tec adapter.)  I've gotten all kinds of suggestions,
 many conflicting, but all seemed to work for each person sending them. 
Some said no problem was had, but I definitely have one with the ProSet
 and Heil adapter that is not there with 2 other Ten-Tec microphones.
 
 I'll let the list know what I find that fixes it on the off chance that
 someone else has the same problem later on.
 
 73,  Duane
 
 . . . snip . . .
 
 
 What's the issue?  I am curious....  
 
 Ron ..... NU1U
 
 
 Duane Calvin, AC5AA
Austin, Texas
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