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AUTO headphone switching
Automatic headphone switching is a unique and powerful feature of the MK2R. By using programmable
Functions, MK2R provides the maximum level of flexibility to customize headphone switching to match
actual operating conditions, including a wide variety of band conditions, contest type, operator skill and
technique. The available functions are fully configurable from very simple switching scenarios to very
complex audio switching systems.
Switching MK2R to AUTO headphone switching mode is accomplished by pressing the RADIO1 and
RADIO2 buttons at the same time. AUTO mode is indicated by the AUTO light (above the BOTH button).
Pressing RADIO1, RADIO2 or BOTH at any time will exit the AUTO mode (return to manual control).
The MK2R AUTO mode operates based on seven “operating” states and one “priority” state. For each state
a different, operator defined, headphone switching configuration can be applied. In addition to the, transmit/
receive state of each radio and the transmit focus, two additional signals, “Receive Focus” and “STEREO”
(or SPLIT) are used to control headphone switching. The interface by which the logging program
communicates these additional signals can be configured on the SO2R tab in Router.
The status of the RX FOCUS and STEREO signals are indicated by the RADIO1 and RADIO2 lights. When
receive focus is on RADIO1, the light above the RADIO1 button will be illuminated. When receive focus is
on RADIO2, the light above the RADIO2 button will be on. When the STEREO (Split) signal is present,
both lights will be illuminated.
MK2R recognizes these states:
State 1: Both radios receiving, RADIO1 has RX Focus
State 2: Both radios receiving, RADIO2 has RX Focus
State 3: RADIO1 is switched to transmit by computer (serial PTT, WinKey, or Protocol).
State 4: RADIO2 is switched to transmit by computer (serial PTT, WinKey, or Protocol).
State 5: RADIO1 is switched to transmit manually (Footswitch, mic PTT, paddles, or VOX).
State 6: RADIO2 is switched to transmit manually (Footswitch, mic PTT, paddles, or VOX).
State 7: Both radios transmitting (non SO2R mode)
Uses State 1 or State 2 depending on RX focus.
Stereo: Priority “stereo” state. Special “Stereo” settings are applied
when logging program indicates “stereo” or split operation.
Fixed:
Automatic headphone switching is disabled
For proper automatic operation, the desired configuration must be defined for each applicable state. This
can be accomplished by using the logging program to place MK2R in each state and manually selecting the
headphone inputs for that state or the Functions Tab can be used as a visual editor to create, upload and
apply the configuration.
NOTE: AUTO headphone switching (receive focus) and AUTO transmit switching (transmit focus) can be
enabled independently.
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