[Elecraft] A Finger PTT switch for use with my Yamaha CM-500 headset?

[Igor Kosvin]

Yep, I agree with Mike. Old 35mm photo film (remember them?) container with
radio shack switch installed on the lid. Prescription drug bottle works too.
I myself prefer the wander of technology called footswitch, being contester
I don't have luxury to occupy my hand with switch while not using my feet
for anything...
73,
Igor, N1YX

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Mike
Sent: Saturday, August 13, 2011 8:36 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] A Finger PTT switch for use with my Yamaha CM-500
headset?

Jeff -

Sounds overly complex to me. Why not just plug the CM500 into the K3 and
wire a small 
momentary switch to the PTT in jack?

73, Mike NF4L

On 8/12/2011 9:25 PM, Jeff Hall wrote:
> I've found that using VOX outdoors is problematic due to background noise,
so I'd like to wire up a finger PTT switch that works with my K3 and Yamaha
CM-500 headset.  I have an existing finger PTT switch that was designed for
use with a Yaesu FT-11R HT.   There are 3 stereo plugs wired to the finger
PTT switch apparatus:
>
>   - MIC IN (3.5mm male stereo plug)
>   - MIC OUT (2.5mm male stereo plug)
>   - EAR IN (3.5mm stereo plug) (this normally plugs directly into the HT's
EAR OUT jack)
>
> When this is all hooked up to the HT, pressing the finger switch puts the
radio into transmit mode, just as if you pressed the TX button on the HT
directly.
>
> I'm wondering if I can use this switch, along with some adapters to get
things working with my K3 and Yamaha CM-500's boom mic:
>
> 1. Couple the CM-500's MIC OUT plug to the switch's MIC IN plug using a
3.5mm female to 3.5mm female stereo adapter coupler
> 2. Connect the switch's MIC OUT to the K3's rear MIC IN (or my Microkeyer
II's ext. MIC IN) using a 2.5mm female to 3.5mm male adapter
> 3. Plug the Yamaha CM-500's EAR IN plug into the K3's phone jack
>
> I don't have anything to plug into the K3's PTT IN jack and I'm not sure
this is even needed.  Maybe all I need to do is continue to use the K3 in
VOX mode, but now the MIC will only activate when I close the switch AND
talk into the microphone?
>
> Thought I'd ask before running out and buying those adapters...
>
> 73 de Jeff, W6UX
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