> 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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
