Quote:
Originally Posted by Dave Moll
I think that regulator is specific to the Jack 1B. I have a 1B with a similar one. The 700 series 'phones use a regulator of a completely different design.
|
The Vocabulary of Engineering Stores states "only used with Jack Unit 1B (not earlier 1a) and used to stop 'frying noise' when used wit a Headset No 1"