View Single Post
Old 28th May 2020, 11:04 pm   #12
Pellseinydd
Heptode
 
Join Date: Jul 2007
Location: Flintshire, UK.
Posts: 707
Default Re: GPO Jack unit 1B and regulator 6B

Quote:
Originally Posted by Dave Moll View Post
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"
Pellseinydd is offline