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564hum [2007/04/25 12:08]
n5na
564hum [2007/05/20 20:43] (current)
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   -HUM when using microphones in SSB.   -HUM when using microphones in SSB.
-  -Worse hum... actually two signals beating on each other when the Omni-VI+'​s audio IN/OUT/PTT from the back panel were physically ​ +  -Worse hum... actually two signals beating on each other when the Omni-VI+'​s audio IN/OUT/PTT from the back panel were physically connected to my computer isolating interface while I was talking on SSB. Easy fix was to disconnect them but that was troublesome. Needed a better solution.
-connected to my computer isolating interface while I was talking on SSB. Easy fix was to disconnect them but that was troublesome. Needed a better solution.+
   -My MFJ Voice Keyer 434 had become useless. Previously stored messages played nicely but connecting my HEIL to the 434 created terrible audio hum regardless of whether the MFJ was tuned on or off. Disconnecting the mic from the front of the MFJ did eliminate most of the hum when testing with prerecorded messages, but if the mic was connected...   -My MFJ Voice Keyer 434 had become useless. Previously stored messages played nicely but connecting my HEIL to the 434 created terrible audio hum regardless of whether the MFJ was tuned on or off. Disconnecting the mic from the front of the MFJ did eliminate most of the hum when testing with prerecorded messages, but if the mic was connected...
  

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