Configuring MRP40 For CW Operation
MRP40 is an excellent CW decoder, even under weak signal conditions & QSB. It supports transmission of Morse Code from the PC keyboard using the CW/FSK jack on the RIGblaster Advantage. Configuration is simple. It will require the optional CW keying cable (or use a stereo 3.5mm to stereo 3.5mm patch cable) to be connected between the RIGblaster Advantage CW/FSK jack and the transceiver’s CW keying jack.  Select CW mode on the transceiver.  
Refer to Figure1.

Complete the following steps to configure MRP40 with the RIGblaster Advantage:
1.  Choose “Options” on the MRP40 window.
2.  Move the mouse cursor to “Show...” and then choose Soundcard...”
3.  Assign “RIGBlaster Advantage Audio” in each of the RX and TX drop-down boxes.
4.  Enter the preferred sidetone frequency.  In most cases this should match the transceiver’s sidetone frequency (or narrow filter center frequency).  If this is
 neglected, someone calling close to your transmission frequency may appear far away on the MRP40 “waterfall” display.
5.  Close the “Soundcard” window.
6.  Choose “Options” on the MRP40 window again.
7.  Move the mouse cursor to “TX Settings” and choose “Send via Com (x) Port” from the menu.
8.  Enter the RIGblaster Advantage COM port number in the text box. Ensure that “Send Pin” is set to DTR, and “PTT Pin” is set to RTS.
9.  Click on “Save”.



Info how to use full break-in with MRP40:

1. Configure MRP40 for sound-card TX only.
2. Put RIGblaster Advantage into "VOX" position.
3. Set VOX delay to minimum.
4. Put radio into CW mode full break-in.
5. Remove "mic" cable from Advantage (or PTT will be held active).
6. Make sure you have a stereo 3.5mm cable from the CW keying jack on the Advantage to the CW keying jack on your radio.

Now whenever you transmit Morse audio, your Advantage will key the CW jack because DTR is logical OR'ed with VOX circuit.