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General discussion forum / K3 twin & audio noise
« on: 2020-01-21, 16:36:04 »
We have successfully set up a K3 Twin remote installation and CW is working well, as well as a remote interface to the SteppIR via RC-1216H.
Unfortunately we have a bad noise problem with SSB audio- it is much noisier than the modulated voice on xmit... And there seems to be a distinct hum in the receive audio as well.
We are using a Kenwood mic in lieu of the Elecraft unit; but, have tried JMP1 both open and closed (per the docs) to no discernible difference. As there is a hum in the receive audio I don't think the mic setting is necessarily to blame. Suspecting power supply issues both RRC's are connected to the switching power supplies powering the rigs so I don't think power is a problem either. We are acquiring an Elecraft mic; but, I am not confident that will solve the problem. All of our jumper settings have been double checked. All cabling is new and was supplied with the new RemoteRig gear. Strapping is via the K3 Twin PCB's.
I expect the solution will be a simple one; but, we are at a loss at what to try next.
Any thoughts or suggestions are welcome...
Thanks & 73 de N5NYM
Unfortunately we have a bad noise problem with SSB audio- it is much noisier than the modulated voice on xmit... And there seems to be a distinct hum in the receive audio as well.
We are using a Kenwood mic in lieu of the Elecraft unit; but, have tried JMP1 both open and closed (per the docs) to no discernible difference. As there is a hum in the receive audio I don't think the mic setting is necessarily to blame. Suspecting power supply issues both RRC's are connected to the switching power supplies powering the rigs so I don't think power is a problem either. We are acquiring an Elecraft mic; but, I am not confident that will solve the problem. All of our jumper settings have been double checked. All cabling is new and was supplied with the new RemoteRig gear. Strapping is via the K3 Twin PCB's.
I expect the solution will be a simple one; but, we are at a loss at what to try next.
Any thoughts or suggestions are welcome...
Thanks & 73 de N5NYM