Hi Tom,

"K7ITM" wrote in message
...
?? So, "triplexor" to me means something with three bands, which you
obviously won't do with just a high pass and a low pass.

What I meant was... output of mixer to parallel connectors of (1) the crystal
filter (bandpass) , (2) series inductor/resistor (low-pass), and (3) series
capacitor/resistor (high-pass), hence, a triplexor.

But I realize now that a duplexor is just as viable, consisting of a parallel
connection of (1) the crystal filter (bandpass) and (2) a parallel LC
resonsator in series with a resistor (bandstop).

In any
event, the goal is to keep a reasonably constant load on the mixer at
all frequencies where it may have significant output. The distortion
generated by a mixer depends on the load it sees.

Yeah, I see what you mean. I should do some actual measurements to see just
how much improvement is possible with a proper wideband termination...

Thanks for the help!

---Joel