You can also build yourself a neat little interface likesuggested in QST Magazine issue 02/2007. This requires an interface box between PC and transceiver. Key your transceiver via the RS232 serial Com Port,orkey your transceiver via Soundcard output. The rise and decay timesof the CW-signalsareautomaticallyadjustedto the sending speed,so a minimum bandwidth is occupied,especiallyforQRS(slow sending).Note: When using AFSKfor sending, one canactivatethe PTT via Com Port by selecting the check box named "Activate PTT pin" in MRP40's menu under "Options - Tx-Settings."2. Recommended:Use AFSK (audio frequency-shift) keying by sending CW audio to the transceiver from the computer’s sound card.The rig operates inSSB transmission mode.The signals generated by MRP40have sine waveform and a smooth envelope,sono annoyingkey clicks. A new feature automatic formats unspaced words read more.ġ.
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