[TenTec] Ten Tec Filters.

[Stuart Rohre]

If you can get at both legs of the crystals and unsolder one, you could 
sue micro clips to probe each crystal in turn to see if it works.  Of 
course you need a  VFO signal source and then put the test crystal in 
series with the test signal and see what the BW and skirts are like. A 
GDO might be a suitable signal source if you have the low ranges as well 
as HF.

-Stuart Rohre K5KVH