On Tue, Mar 10, 2009 at 11:42 AM, Guido <[email protected]> wrote: (Note for group owner: if I write to the reflector from my gmail account the message doesn't get through - yahoo's spam filter? check the "Spam?" folder, I might not be alone - If I write directly from yahoo groups web interface the message is sent)
> If the Q channel in your example has a phase shift of 90 degrees with > respect to I, > then the output is either 10.001 kHz (USB) or 9.999 kHz (LSB). If the phase > shift is 0 degree, > (I is same as Q), then the output is both on 10.001 kHz and 9.999 kHz (DSB). Excellent. Now I can move one step ahead in the planning process (plan, design, build ... quoting soldersmoke). And I feel relief that my brain is still remembering complex things. :) > Your idea is an interesting because it allows to make a WSPR transmitter > with standard crystals. Other projects that have been linked in reply to my message also use standard XTALs or in any case common parts. I had seen all 3 designs, and I thank their respective authors for the excellent work they've done in designing and documenting. I will need to read again their articles before I proceed with my WSPR 30m TX. > It would be interesting to see if this can be completely digitally > built in > a micro controller, i.e: Well, this is beyond my uC knowledge, but certainly an interesting idea. 73, Paolo IK1ZYW PS: don't expect quick advances in the implementation of this idea. A (happy) family event is scheduled in a few days and will keep me busy and sleepless for few months.
