Hi Mike and all who replied to my post, Many thanks for the tips and help - I'm going to print them all out and take them up to the shack (it's the club shack since I can't have deadly radiation-emitting antennas at home, and there's no internet connection up there) and play around a little today. I don't think my finances will stretch at the moment to include the IMD Meter - it's certainly a great idea (and maybe a future project for homebrew?), but seems a lot to pay for just one digimode.
I bought a new medium-range soundcard on Friday (SoundBlaster Audigy - cost about $50) and installed it yesterday - this should be at least better than the onboard "card" in the PC there and should help all round. As far as RF getting into the system, well the microHam cables are all shielded, and so is most everything at the shack. I found the other tips and help particularly interesting and useful, since they involve simple measures and rig settings which anybody could easily apply, and I'll play around this morning with those and other ideas. Thanks to all again, 73 and good digi-DX Rob DK1ROB > Hi, Rob; > > You might want to consider this - http://www.usinterface.com/IMDMeter.html > > I'm planning on buying one. > > Good luck, > Mike N5UKZ
