Hi Folks
I have a FPM-300 with a few dead xtals. I can order the xtals but I have
no clue about the designation of the mount or the pf/ohm of the xtal.

The manual has part numbers but none of the other information. (see below)

As far as the size, the manual describes needing a "type CR-55A/U or
CR-72/U for HC-18/U holder" but http://jancrystals.com/chart.html and
others only describe other specs (HC25 plugin can) that appear to be the
same size.

How wrong could I be in ordering a xtal that physically looks right at
the proper freq?


CR405 43.0Mhz 019-04749
CR406 43.5Mhz 019-04751
CR407 44.0Mhz 019-04752