6400 Balanced mic input?

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  • Question
  • Updated 5 months ago
  • Answered
  • (Edited)
In testing the mic input, on the 6400 it was discovered that the ring connection was connected to case ground as well as the sleeve.

That being said, how can you call the input Pseudo-balanced?
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Bill -VA3WTB

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Posted 5 months ago

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Tim - W4TME, Customer Experience Manager

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Official Response
Technically pseudo-balanced input it is an unbalanced input into the codec, but it is wired as a balanced input from the connector to the input of the codec where it is converted to an unbalanced input (mic- and ground are bonded together).  This prevents multiple ground points in the input circuit when the transducer input (mic) is wired for a balanced input.  The advantage is that it makes the unbalanced input into the codec less susceptible to RFI.