ladder filters
 

I just got a deal on ebay for 8.3886 mhz crystals (414 pcs for $9.99).
Should be able to make a few good ssb and cw filters out of that!
They look like std microprocessor types (hc49/u holders) though this
isn't a common microprocessor frequency. Guess I'll start with 100pf
coupling caps, any good guess on what the termination resistance might
be? (I'm looking for a bw suitable for ssb, probably about 2.1khz).
Hope this frequency doesn't have any bad mixer products (but I can
always pick either high or low side injection if necessary).