Thanks for the clear instructions from Don, and the helpful suggestions
from everyone else. Piecing it all together, will this basically work?:
-- On the K3S, plug the CM500's mike and phone plugs into the respective
jacks on the rig's rear panel. Wire a momentary-contact switch to an RCA
plug inserted into the rig's PTT IN jack to serve as a manual PTT switch.
-- On the KX3, plug the headset's mike and phone plugs into the
respective jacks, and use a momentary-contact switch on a mono-style
1/8" plug in the ACC2 jack as a manual PTT switch.
The only thing I'm concerned about is the issue of mono vs stereo plugs.
For example, the CM500's mike plug has stereo-style contacts, whereas
the mic in jack on the K3S is marked "mono." There aren't any issues there?
On other points, if I were going all-in on becoming a regular phone
operator I might look at other headsets such as the Heils. But what I'm
looking at is being a bit player on a couple of nets very occasionally
at most, so the CM500 seemed like a decent option.
Re VOX vs PTT, I can understand the convenience of the former, but being
an occasional throat-clearer I wouldn't want to become a distractions on
those nets.
Thanks again,
Frank
On 5/5/20 4:49 PM, Don Wilhelm wrote:
Frank,
For the K3S, just plug the microphone and headphone plugs into the
rear panel jacks. Set the MIC SEL to RP and turn bias on.
For the KX3. the easy way is to just turn MIC BTN off and plug it in.
That microphone needs bias, and it will be supplied by the digital DC
that normally is used for the MIC Button functions.
The harder way for the KX3 is to make an adapter (but it is not that
hard)
Be aware that, like most computer microphones, the tip and the ring of
the plug are wired together - so if you make an adapter, you must use
a stereo jack so the audio is not shorted to ground.
If you make an adapter, you can include a connection for a PTT switch,
but without that, you can put the KX3 into transmit with the XMIT button.
73,
Don W3FPR
On 5/5/2020 7:31 PM, Frank O'Donnell wrote:
Phone newbie here. Any recommendations on off-the-shelf cables or
adapters, and a handheld switch, to enable use of a Yamaha CM500
headset along with PTT functionality on both a K3S and KX3?
Thanks much,
Frank K6FOD
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