V. External Mode Using Mixing
As mentioned above, this wiring does not "mix" the TONE OUT sound from the DMX-40
with your receiver audio output before the combination is fed to the powered speaker.
There are a number of low-cost 4-channel mixers available on Amazon, either powered
or passive (unpowered). If you are interested in hearing BOTH the audio from your
transceiver AND the TONE OUT from the DMX-40, this is for you. Note that the
DMX-40 generates a tone output for either computer generated code or code from your
manual key.
An example of a powered mixer is Amazon Product Code B07QDN6Z83. An example
of an unpowered mixer is Amazon Product Code B08VJ44BSF. Both are near the $20
price tag.
Basically, rather than a cable #3 going directly from Cable #2 to the powered speaker, it
would go to one input on the mixer, and an additional Cable #3 would run from the
headphone jack on the DMX-40 to a second input of the mixer. The mixer output would
then connect to the powered speaker.
One of the mixers above uses ¼" phone jacks, the other RCA jacks, so the cables you
would need will depend on the mixer you choose.
The mixer will allow you to adjust the volume balance between the CW out tone and the
received signal.
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