Using RadioSport headset standard mic with KX3?

[Les Gasser W9XC]

Hi all,

I'm curious if anyone has an Arlan RadiosPort headset with the
standard red (M102) dynamic mic element, that they have working well
with the KX3. This is a great headset, but I can't seem to get enough
output from this mic element to get any usable level on my KX3.
Specifically, I can't find any setting of the "keyer/mic" level that
gives me any ALC bars at all at any speaking volume. (The RadioSport
mic has a 2-conductor T-S plug, but I do have the MIC-BTN menu item
set correctly for this and I do have some sound in the monitor
(headphones) when speaking.)

I wonder about this because the same mic works great with my Flex
6500, and I'd imagine the KX3 could accommodate a range of mic levels
as great as the Flex can.

Any help appreciated.

- Les Gasser, W9XC




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[Don Wilhelm-4]

Les,

I know nothing about that headset, but grab your ohmmeter and check to
see if the tip and ring connections are tied together (like they are for
most computer microphones).

If they are connected together, the KX3 PTT circuit may be applying a
bias voltage to the dynamic microphone which would drive the element to
one side of its travel or the other making it inoperative.
On 2/28/2014 8:42 PM, Les Gasser W9XC wrote:

> Hi all,
>
> I'm curious if anyone has an Arlan RadiosPort headset with the
> standard red (M102) dynamic mic element, that they have working well
> with the KX3. This is a great headset, but I can't seem to get enough
> output from this mic element to get any usable level on my KX3.
> Specifically, I can't find any setting of the "keyer/mic" level that
> gives me any ALC bars at all at any speaking volume. (The RadioSport
> mic has a 2-conductor T-S plug, but I do have the MIC-BTN menu item
> set correctly for this and I do have some sound in the monitor
> (headphones) when speaking.)
>
> I wonder about this because the same mic works great with my Flex
> 6500, and I'd imagine the KX3 could accommodate a range of mic levels
> as great as the Flex can.
>
> Any help appreciated.
>
> - Les Gasser, W9XC
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

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[David Shoaf]

What firmware version are you running?  When setting MIC gain, if you can only go up to a count of 40, you might want to consider updating to version 1.87, the current Production release.  A new feature with this release is additional gain is available for lower output mic elements.

Cheers,

David