[TenTec] Fwd: Model 715 question

[Barry N1EU]

I would just buy a plug that mates with the 715 front panel mic jack
and wire it to a stereo 1/8 in jack to plug the CM-500 into so your
mic audio and bias are handled like on the K3 rear panel jack that
you're familiar with.

Barry N1EU

On Thu, May 26, 2011 at 11:32 AM, Jim Lowman <jmlowman at sbcglobal.net> wrote:
> Please reply to jruing at ameritech.net
>
> -------- Original Message --------
> Subject:        Model 715 question
> Date:   Wed, 25 May 2011 23:57:35 -0400
> From:   Richards <jruing at ameritech.net>
> To:     tentec-owner at contesting.com
>
>
>
> GOAL - to use a computer type headset - such as the Yamaha CM-500 guys
> like - with the Model 715 and an Omni VII  -  the guys at the contest
> station assigned me this task.
>
> There is a small 1/8 inch mic input jack on the Model 715 speech processor?
> It says in the manual :
>
>         The secondary mic input is a 1/8” mono connector as used
>         by popular headset/microphone combinations like those
>         manufactured by Heil Sound.
>
> Mono ?   Really ?   Do HEIL microphones really use 1/8 inch mono plugs ?
> Not a three-pole jack like they use on popular computer microphones?
> Like they have on the K3 ?     How did this happen ?
>
> So...  Is there a way to use that jack with computer type electret
> condenser microphones ?    or with dynamic type computer headset
> microphones ?
>
> Can someone good at reading the schematic tell me if there is a way to
> provide bias voltage to a STEREO  three-pole jack (assuming I install
> one in place of the MONO jack it comes with)   to provide bias voltage
> like is provided on Pin 2 of the Omni VII and Model 715 8-pin mic
> connector?   I am still trying to figure these things out.
>
>
> Thanks !
>
> ------------------
> Happy Trails.
> =======================  Richards / K8JHR  =========================
>
>
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