Quote:
Originally Posted by Ian - G4JQT
It's to do with the lack of anyone now bothering to keep The audio of each transmitter in phase.
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No, a difference in the
phase of the audio signals would not introduce sufficient delay to produce an audible echo.
Quote:
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...it arrives at different tx sites now by various digital routes with differences measured in (I'd guess) milliseconds.
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As I said in my previous post, that is the most likely cause of the echo, provided the delay introduced exceeds about 100mS, below that, no audible echo would be heard.
Regards,
Dave.