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microHAM micro KEYER Quick Start Manual page 3

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Settings for COM port generated PTT keying

These settings are applied when the transceiver is keyed by a computer generated PTT signal

(on a virtual serial port) or by WinKey PTT.

A - This setting disconnects computer generated audio from the transceiver and connects the

station microphone to the radio. This setting can be used for CW or FSK mode and is useless

for SSB or digital mode operation.

B - This setting routes audio from the computer sound card output to the transceiver rear audio

input and connects the station microphone to the sound card mic input. This setting is useful

for digital mode operation when the computer generates a PTT keying signal on a COM port.

This is the preferred setting for digital mode operation.

C - This setting routes audio from the computer sound card output to the transceiver

microphone input and connects the station microphone to the sound card mic input. This

setting is useful for SSB message ("voice keyer") playback and recording with software capable

of providing a PTT signal on a serial port. This is the preferred setting for SSB contest

operation using WriteLog or the N1MM Free Contest Logger.

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Box 1257

Geneva, FL 32732