[TenTec] Re: Heil ProSet on Orion - reprise

[Duane A Calvin]

Really?  Has Bob Heil changed the wiring of the TT adapter?  Have you
opened yours up to see if the PTT ground goes to the shell?  Mine is
about 7 years old, and it is definitely *not* wired as required for the
Orion (i.e., PTT return goes to Pin 2 audio ground, not to chassis ground
on the connector shell).  If the wiring has changed recently, this may be
is the reason some of us are seeing the problem while some aren't. 

        73,  Duane


On Fri, 23 Jul 2004 07:01:21 -0400 Bill Tippett <btippett at alum.mit.edu>
writes:
> AC5AA wrote:
>  >I am still working on a solution to my ProSet / Heil adapter / 
> Orion TX
> audio hum situation - thanks to many of you for very helpful hints.  
>  One
> thing I wanted to post for others who may stumble into this same
> situation is one of the "helpful fixes" NOT to do.  Bob Heil's web 
> page,
> which was referenced somewhere along the way, describes tying the
> microphone shield pin (pin 2 on the Orion) to the mic connector 
> shell.
> (Here: 
>
<http://www.heilsound.com/harmonics.htm#RFI>http://www.heilsound.com/harm
onics.htm#RFI) 
> 
> Do NOT do this on the
> Orion!  Paul Clinton verified with me yesterday that the Orion does 
> not
> take kindly to making that connection, and I can verify that.  I'm 
> still
> working down through the options to determine which one will work, 
> and
> I'll report back when I've found the solution.
> 
> KM2L wrote:
>  > My woes ended when I made up a cable with a 1/8" jack (Mic In)
>  > connected
>  > to pins 1 and 2 of the TT 4-pin connector, and a 1/4" jack (PTT)
>  > connected to pin 3 and to the cable shield.
> 
>          Which is exactly the way the Heil AD-1-T is wired for
> any who don't want to build the cable themselves.
> 
> http://www.heilsound.com/ad-1.htm
> 
> I've been using this with my Heil Pro-Set including
> Footswitch and PTT since last August with no problems.
> Maybe someone should tell Heil that his recommendation
> on the webpage above should exclude Orion (I'm copying
> Heil Sound on this note).
> 
>                                          73,  Bill  W4ZV
> 
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> 


Duane Calvin, AC5AA
Austin, Texas