I talked to Ralph by email with pretty much the same question. He said the BHI DSP is for reception and the 2.3 SSB filter or 500 CW filter are for both receive and transmit. I have the 2.3 SSB filter now and will soon add the BHI DSP inside the radio. Like another ham said go to www.w4rt.com and listen to the examples there and then you can make a knowledgeable and informed choice.

  I have not bought from K4TEC but have sold to him and the transaction went very smooth with no problems.
73 n0yg
Robert

Radio has shipped 12-29-2010. Thats all I know now.

1-16-2011
now I have my money back.
I am done with this, PERIOD

Just realized I mis-spelled congratulations. I must of skipped school the day that was covered, lol.

Congradulation on the quick licensing to EXTRA. I thought I did mine fast, back in the day when It took me 6 wks to go from having an interest to a extra. Again Congradulations !!!!!!
73 n0yg