Input and output impedance and levels? Pic of waveform?
If you are doing this six times, the input impedance has to be 6 times higher to avoid overloading the source.
The output impedancia of the standard is ~50ohm. The output of my circuit is ~50ohm through the 47ohm output resistor.
The follower stage after the comom emitter stage generate the low impedance signal to drive the 6 crystal filters.
The input has 3.5Vpp and the output 2.4Vpp (~11dbm on 50ohm)
The absurdly high Q value of the quartz circuits can pull the average output frequency from the mean value at the input. I think these can be used, but you would have to reduce their Q considerably (dampen the crystals with a resistor of a couple hundred Ohms across them).
Why?
You might want to check what has already been done in the past to get ideas. A number of frequency standards used xtal filter/buffers on the output of their oscillators, like this HP schematic shown. The manuals quite often has a section on theory of operation that might be useful.
Thank you!
Here on my instagram I have a picture of the output stage without and with the filter.
https://www.instagram.com/metslab/The harmonic content of the output has bigger even harmonics, I think because the class A emitter folower of the output stage. Anyway, I think it`s working fine.