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When manual control of transmit focus is selected in MK2R, CW (including WinKey) and PTT signals will
be redirected to the active (selected) radio. This function was implemented to avoid confusion and assure
"expected" behavior. This means that CW and PTT signals for both radios will be directed to the selected
(active) radio.
Some logging programs do not support two radios or are designed to generate
only one set of keying signals which are connected to the selected radio using
a steering (A/B) control. Select the "Steer serial CW/PTT" to allow Router and
MK2R work properly with those applications.
When steering is enabled, the Serial CW, Serial PTT and 2
RADIO2 and the active radio will be selected based on the "steering" control signal (TX focus) defined on
the SO2R tab. Note: the A/B steering signal is usually by the status of Pin 14 of the LPT input.
MK2R provides extensive and unique flexibility in routing audio among the computer sound card,
transceiver, and the station microphone. To understand the way MK2R handles the sound cards,
transceiver audio inputs and microphone you must understand how the sound card works. The following
description is valid for both MK2R and MK2R+, the only difference is that the sound cards are integrated
with MK2R+, where MK2R requires externally connected (in the computer) sound cards.
Understanding Sound Card operation in Amateur Radio programs
Note: the following discussion and tests apply to external sound cards used with MK2R and microKEYER. It
is not applicable to MK2R+ due to the unique dual codec sound system.
Each sound card has two sets of controls - PLAYBACK and RECORDING. For most cards these settings are
independent and can be controlled by the application software, the user (from Windows VOLUME CONTROL
application), or both. To understand the operation of these controls, it is recommended that you conduct the
following tests:
- Connect headphones to the sound card output and connect a microphone to the sound card microphone jack.
- Open the VOLUME CONTROL application (click Start | Run and type SNDVOL32 if you do not see a speaker
icon in the System Tray area of the Task Bar).
- If your system has more than one sound card installed (as it should with MK2R or MK2R+), click Options |
Properties and select the sound card you are using. Then select "Playback" and enable ALL controls to be
displayed.
- Leave the PLAYBACK VOLUME CONTROL running and open second instance of VOLUME CONTROL.
Arrange them on the desktop so both are visible at the same time (later you can run your logging software
and watch for interactions). In the second instance of VOLUME CONTROL, click Options | Properties, choose
the same sound card as you chose for the PLAYBACK VOLUME CONTROL, select "Recording" and enable
ALL controls.
- Now you have both PLAYBACK VOLUME CONTROL and RECORDING VOLUME CONTROL on your desktop.
- Confirm that you have a "Microphone" channel in the PLAYBACK window. If not, your sound card will not
support "live mic" mode. You will need to upgrade your sound card to make use of those functions.
- Now UNMUTE all controls in the PLAYBACK window. If you speak to the microphone, you should hear your own
voice in headphones. You can control level with the microphone slider or master volume slider. This is
because sound card has INTERNAL LOOPBACK from the microphone input to the sound card output
ENABLED. If you MUTE microphone control in the PLAYBACK window, loopback will be disabled and you
will hear nothing.
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CW/PTT steering
AUDIO SWITCHING TAB
35
nd
PTT channels for RADIO1 are also used for
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