microHAM MK2R Manual page 40

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1. Transmit by VOX or software (CAT) command.
This setting is displayed in the TOP picture and indicated by the first letter of the settings (ABCm).
The current operating state is indicated by a large black frame around the switching scheme picture.
A: Computer audio is disconnected from the
radio and the station microphone is connected
directly to the transceiver microphone jack. This
setting is for those who prefer VOX operation in
SSB.
B: Computer generated audio is routed to the
transceiver accessory input and the station
microphone is muted. This is the preferred
setting for digital mode operation (AFSK, PSK,
etc.) when the computer generates a PTT
keying signal on a COM port.
C: The station microphone is connected to the
sound card microphone input and audio output
from the computer is connected to the radio's
microphone input. This setting is similar to "A" but microphone signal first goes to the sound card where it
is looped to the output and then to the radio microphone jack.
2. Transmit by computer generated PTT or WinKey PTT.
This setting is displayed in the MIDDLE picture and indicated by the second letter of the settings
(ACmA). The current operating state is indicated by a large black frame around the switching picture.
A: Computer audio is disconnected from the
radio and the station microphone is connected
directly to the transceiver microphone jack. This
setting is for VOX operation.
B: Computer generated audio is routed to the
transceiver accessory input and the station
microphone is muted. This is the preferred
setting for digital mode operation (AFSK, PSK,
etc.) when the computer generates a PTT signal
on a virtual port.
C: The station microphone is connected to the
sound card microphone input and audio output
from the computer is connected to the radio's
microphone input. This setting is similar to "A"
but microphone signal goes through the sound
card. This configuration is useful for voice keyer operation (DVK) and is the preferred setting with N1MM
Logger, Win-Test, or WriteLog.
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