Hello Alberto, Eberhard, John, and all, I made some tests with an image-cancelling mixer for the 136 kHz lately, using the "SSB phasing method" as described in the ARRL handbook. The only tricky part
Hello Wolf, congratulations for this project, I am sure it can open new possibilities to would-be experimenters in LF. As you mentioned, Jason V0.99 (to be released soon on the Web site) has I/Q outp
Alberto di Bene wrote: I am wondering if a reverse form of the (in)famous Tayloe sampling detector could be used here. What I mean is to take your four I+, I-, Q+, Q- signals and to multiplex them in
Hello Alberto, Thanks for the point - and Ok about the reversed Tayloe detector : In fact, the circuit -as it is- is already quite similar. One difference is the duty cycle of the switching waveforms
Hi, You may wish to consider a dual 4-input analog mux such as the '4052. For instance, see http://www.semiconductors.philips.com/pip/74HC4052.html You can connect the quadrature LO outputs directly
very interesting, and it is still allowed to use an additional notch filter, or did I misundertand? 73, Jan-Martin LA8AK (ex GW5BFV) --Opprinnelig melding-- Fra: [email protected] Me
Jan-Martin, very interesting, and it is still allowed to use an additional notch filter, or did I misundertand?< At this point, no extra filtering should be required. The quadrature outputs from the
Wolf, I should have my version running on the bench tonight. It uses all four switches in a 4066, each one conducting for 1/4 cycle. The clock is just a Johnson walking-ring counter driving a quad AN
Wolf, an easy way to get the 25% signals would be to use a Johnson counter (eg. CD4017). 73, Rik ON7YD Hello Alberto, Thanks for the point - and Ok about the reversed Tayloe detector : In fact, the c
