Transmit audio has fast echo

  • 3
  • Problem
  • Updated 5 years ago
  • Acknowledged
Flex 6700 SmartSDR 0.16.4 On SSB there is a very fast echo on the transmission almost like the reflection or echo from a sound travelling down a long drainpipe. This is heard at a low level 'on air' and also more clearly via the front panel phone monitor socket.
It is not RF getting into the radio as it is the same into screened dummy load. It gets progressively worse as the RF power level is increased towards 100w. Any ideas?? G4BIM
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G4BIM

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Posted 5 years ago

  • 3
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Gerald - K5SDR, Employee

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Official Response
I have not been able to reproduce this here at any power level. I am listening to the monitor while transmitting. Monitor audio is a closed loop that exists within the audio CODEC itself and the power control has no effect on its internals. There is virtually no delay within the monitor path so any delayed echo would point to RF ingress. Very hard to tell from here since I can't reproduce it. You should probably open a help desk ticket if you need additional support assistance. You can do so through the Zendesk link on the community home page.