Hi, Lyle. Thanks for the comment. If nothing else, I'm learning from this discussion.
Actually, until Alan pointed out that they were different, I thought that the two receivers WERE driven by the same main synth in diversity mode. If it were possible to have that option when in diversity mode, that would seem to greatly simplify what I was suggesting. 73, Dave AB7E On 9/16/2010 11:35 AM, Lyle Johnson wrote: >> Alan has verified your point about relative phase of the two receivers >> changing with frequency, so that indeed would have to be accounted for. > A possible mod would be to feed the main synth to both receivers. This > would then only be good for diversity operation, but there would be no > random phase change when tuning. > > The DSPs do not have this relative phase change issue. The dual A/D is > driven by one clock on the main DSP board. The ADC output is fed to the > Aux DSP, but not clocked by the Aux DSP. Thus, the sampling offset and > any delays are fixed and constant. DSP filter delays are also constant > as long as you do not use the IIR filters for 100 Hz and 50 Hz > bandwidth. I am not certain if the actions of AutoNotch and/or Noise > Reduction would introduce any relative phase changes -- assuming > activation in both receivers, of course! > > 73, > > Lyle KK7P ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
