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Old 15th Nov 2017, 11:10 am   #38
Dave Moll
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Join Date: Feb 2005
Location: West Cumbria (CA13), UK
Posts: 6,127
Default Re: GPO 332 transmitter issue

Assuming that the 5V is what's measured across the electret unit itself, then it should work fine at this voltage, as I successfully run field telephones with 21A transmitter insets from 4½V batteries.
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