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Old 14th Nov 2017, 8:55 pm   #28
russell_w_b
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Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
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Default Re: GPO 332 transmitter issue

I do indeedy! Neither capacitor (both are contained in the same case) is critical to its operation given that you're on a plug-in connection. The telephone bell uses the cap in the master LJU.

Be warned, though... If that's how the telephone handset was wired, it's wrong. It's effectively connecting the receiver in series with the mic. Passing d.c. through the receiver will eventually damage it. When you do find your spurious 150 Ohms, connect the handset as I suggested earlier, and as the drawings show.
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