[TenTec] RFI into Orion II

[Barry N1EU]

As Ted pointed out, your shield needs to go to pin 7, not pin 6.  Your PTT
goes to pin 6 and PTT shield goes to pin 5.

Barry N1EU

On Thu, Feb 18, 2016 at 10:07 PM, Troy, W6HV <w6hv at verizon.net> wrote:

> Ted,
> I homebrewed the adapter. The shield side of the ProSet microphone goes to
> pin 6 on the Orion and the center conductor ( ProSet tip of connector) goes
> to the Orion pin 8. Using  the Ten Tec model 709 microphone I get great
> audio.
>
> How is your ProSet connected?
>
> 73,
> Troy, W6HV
>
> -----Original Message-----
> From: Ted Bryant
> Sent: Thursday, February 18, 2016 6:02 PM
> To: 'Discussion of Ten-Tec Equipment'
> Subject: Re: [TenTec] RFI into Orion II
>
> Hi Troy,
>
> Need a bit more information. The Orion II has an 8-pin mic connector and
> the
> Pro Set mic terminates in an 1/8-inch mono plug.  I don't understand how it
> is connected to the radio.   Are you using some sort of an adapter, a Heil
> AD-1 maybe?
>
> Are you sure the mic connection is the path of RF ingress and not the
> headphone connection?  Have you tried a different mic?   Have you checked
> the bonding of the Orion's chassis to all the other equipment?
>
> I'm using a Heil ProSet with my Orion II without any rfi.
>
> 73, Ted W4NZ
>
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Troy,
> W6HV
> Sent: Thursday, February 18, 2016 6:00 PM
> To: tentec at contesting.com
> Subject: [TenTec] RFI into Orion II
>
> I recently got a Heil Pro Set 6 and tried to use it with the Orion II. The
> mic cable is a shield conductor with the center conductor to the tip of a
> plug and the case is connected to the shield. This causes the mic to have
> no
> RF shield and the result is heavy RF into the Orion mic input. Does anyone
> have a solution? I have tried a FT-240-J toroid, decoupling with a 1:1 600
> ohm transfomer and both windings by-passed with .001 caps. The only thing I
> can think of is the place shielding con the cable (ugly!). Any help?
> 73,
> Troy, W6HV
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