Don, thank you. I have no trouble determining frequency range desired, and have most of the necessary part numbers for the specific instruments.? I've been concerned about how to substitute similar spec'd parts should I not be able to locate direct replacements. Also, I need complete specs to be able to test what I do find...
?I think I've only looked in one or two accessory catalogs, unsuccessfully. I foolishly figured they'd all be the same. Maybe the answers were just sitting there waiting for me had I been more thorough.
?
Thanks again.
Dave Borcher