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David,
Does anyone have an I-Q vfo (google it IYDKWTI), kit or built, for sale? TIA & 73, Dave, N3HE Sorry we ran out of them at AmQRP. The sales were brisk while they lasted. We (George Heron and I) are currently discussing the possibility of another production run. Let George (AmQRP) know if you are interested. If anyone is wondering what we are talking about, you can see info and join the discussion in my YAHOO group - DDS-VFO. I am the moderator and "doorkeeper" just to keep out spam. Very briefly, it's a 0-30 MHz VFO that I designed. It uses a couple of PIC microcontrollers to run an AD9854 DDS. This DDS part provides TWO outputs - I (In-phase) and Q (Quadrature - 90 degrees shifted from the I) which allows many interesting modulation/demodulation possibilities. I had to Google IYDKWTI and I do know what it is !. ;-) 73, -Craig, AAØZZ |