On 9 September 2012 18:28, Pascual Arbona <p.arb...@securimar.com> wrote: > > > Hello Brian, > I am a radio amateur and and also in the Time nuts list, At the > moment I am planning to bild a DMTD for experimentation. and as you have a > nice experience in this field , for me will be very wellcame your help. My > ask is ¿whitch is te best temination for the mixer? (FI 10Hz or 100Hz) ¿what > about the amp, limiters and zero crosing detec.)
Mixers should be terminated in 50 Ohms - at least at all frequencies where there is an output. Someone mentioned minicircuits. They sell constant impedance filters, where the impedance in the both the passband and stopband are 50 Ohms. Most filters have a impedance far away from 50 Ohms in the stopband. I don't know the details of what you are trying to do, but keep in mind what I said. Dave _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
