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Old 26-04-2024, 09:07 PM
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anthony2302749
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Join Date: Aug 2005
Location: Melbourne
Posts: 542
Quote:
Originally Posted by Peter Ward View Post
The pressure tuning system is not complicated. Air density is used to change the refractive index of the etalon chamber.

I suspect all that is needed is you completely screw off the tuning knob/chamber. Replace the O-ring and apply a smidge of silicone grease on the new ring. Re-install the knob. Should work like new.
It’s what we did at Bintel Melbourne back in the day. I remember doing one or two. Thought I should add if you are not comfortable then see Stefan
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