microHAM MK2R User Manual page 40

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.
Router generally selects the proper audio configuration based on the operating mode reported by the
transceiver in response to polling by the application (logger) and/or Router. Some transceivers make
the switching easy by providing a unique DIGITAL "mode." Among the rigs providing such support
are nearly all Yaesu transceivers (PKT, PKT-L, PKT-U), most newer Icom transceivers (USB_D,
LSB_D, DIGITAL-1, DIGITAL-2), and the Elecraft K3. Unfortunately, many radios fail to provide a
separate digital mode or their serial control protocol does not report the digital mode. This is true for
all Kenwood and TenTec transceivers, most older Icom transceivers and the Elecraft K2. With those
radios, digital operation (except for FSK) must be done using USB or LSB.
Even though the radio may not report a DIGITAL mode, Router
can make an intelligent choice and apply the DIGITAL or
VOICE configuration for Audio and PTT based on the operating
frequency. The VOICE/DIGITAL combo box is used to select
voice or digital mode when the transceiver it tuned to the
"Digital Band" as defined in the Digital Band Map and the
operating mode is USB, LSB or FM.
Select by frequency: Router will select DIGITAL settings when operating on a frequency inside the "Digital
Mode" boundaries. These boundaries can be fully customized in the Band Map by clicking the
Digital Band Map button.
Use VOICE settings: VOICE settings will be used when LSB, USB, AM or FM are selected regardless of
operating frequency. This should be used with most Yaesu transceivers, Icom transceivers that
support USB-D and LSB-D and the K3.
Use DIGITAL settings: DIGITAL settings will be used when LSB, USB, AM or FM are selected regardless
of operating frequency.
The Sound Card button is only visible with Windows Vista and displays the Mixer ID, Wave In ID and Wave
Out ID for each input/output.
There are several audio switching configurations 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 (ACmA) – 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.
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Audio Switching
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