Serial port interference?

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Command30

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I was experimenting with Alpha Tags on my feed and made a rather bizarre observation. With the serial cord plugged into my BC346XT there seemed to be a short delay (perhaps 0.5s) at the start of each transmission during which some sort of interference/overmodulation could be heard. I'm not sure if this is a result of maybe a poor USB-serial interface or perhaps poor computer hardware.

I'm still a relatively new feed provider so I apologize if this seems either obvious or vague.

Thanks.
 

ST-Bob

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I bet you have a ground-loop. Put an audio isolation transformer between the scanner's audio jack and the sound-card's input. That will separate the ground-loop the serial cable is creating.
 
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