samedi 5 juillet 2014

RF into the computer during TX on PSK31

I am quite new with the digital modes. I'm having probs with the computer freezing up during transmit on PSK31. Maybe it would be helpful to describe my equipment:



I operate a Kenwood TS480-SAT at 25W (on PSK31), the modem is a SignaLink USB using the USB cable which came with it, an Acer laptop computer running Windows 8 and Fldigi. The antenna is a fan dipole and yes, it uses a 1:1 current balun.



I suspect that RF is getting from the SignaLink modem into the computer via the USB cable. During transmit, it often freezes the program and gets stuck in TX. I have to physically turn off the modem, close Fldigi, then restart it. Then a few minutes later it may do it again.



How do I fix this problem? Is there such a thing as a shielded USB cable?




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