microHAM microKEYER Manual page 28

Router generally selects the proper audio configuration based on the mode, and optionally frequency,
reported by the transceiver in response to polling by the application (logger) and/or Router. If Router is not
able to read the operating mode from your radio (radio does not have computer control port or does not
report usable mode information), you can select one of four fixed "no radio" modes or one "no radio" mode
with manual (keyboard/keypad) mode selection.
There are several optimized settings for each operating mode.
CW (AAA) – The audio configuration is not important for CW operation. This choice has been included to
maintain consistency with T/R keying (configured on the PTT tab) where it is important. CW (AAA)
assures quiet audio switching and minimizes relay clicking.
VOICE (ACA) – The station microphone is connected to the radio mic jack. When the computer generates
PTT on the virtual port PTT channel, the sound card output is switched to radio mic jack. This
setting works with VOX or PTT (foot switch) mode, allows DVK playback, supports input switching
for SSTV, and allows interrupting playback of a recorded message by pressing the microphone PTT
or foot switch. When a DVK message or SSTV image is being transmitted, the station mic is muted
and the computer audio is applied to the transceiver microphone input. With this setting, DVK
messages must be recorded in the "on air" mode. This setting is recommended for general VOICE
use.
–
VOICE (CCA) The station microphone is connected to the sound card mic input except when the foot
switch or microphone PTT is pressed. When the microphone PTT or foot switch is pressed, the
microphone is connected to the radio. This setting allows use of VOX or manual PTT, off air
recording of voice messages, and allows interrupting playback of a recorded message by pressing
the microphone PTT or foot switch.
VOICE (CCC) – The station microphone is always connected to the sound card mic input. This is the same
as above but when the foot switch or hand mic PTT is pressed, the microphone remains connected
to the sound card.
VOICE (CBA) – Special setting for radios which use the rear panel audio input for DVK input during voice
operation (N1MM Logger with TenTec Orion or Orion II). Do not use with other loggers or radios.
VOICE (ABA) – Special setting for SSTV mode. The microphone is connected to the radio microphone jack
and allows VOX or foot switch VOICE operation. When an image is being transmitted, the sound
card audio is connected to the transceiver rear audio input (Kenwood, TenTec, and Icom
transceivers) and the mic is disconnected. This setting is not recommended for DVK operation with
Icom transceivers.
FSK/DIGITAL (BBB) – The station microphone is disconnected and the computer generated audio is
applied to the radio's rear panel audio input. This setting is recommended for all digital mode
operation regardless of keying type (FSK or AFSK).
FSK/DIGITAL (CCC) – The computer generated audio is connected to connected to the radio front panel
mic jack and the sound card microphone input is muted. This setting is recommended ONLY for
older radios and the Elecraft K2 that do not have rear panel audio input for digital modes.
Router will show a black box around the selected mode/audio configuration.
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Audio Switching
28