Two Scanners / One Computer - Audio Bleed Issues?

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emsflyer84

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Hey all, I've got two scanners running off one antenna with a multicoupler. Then each scanner is plugged into my PC via individual USB sound cards to feed two separate Broadcastify feeds. One feed is running through ProScan, the second is using ScannerCast. When listening to the feed running on ProScan, I can hear the second feed very quiet in the background. When listening to the other one, I can't hear any background noise. Both scanners are connected to the same kind of USB sounds card and plugged into the computer right next to each other. Any idea what might cause this "bleed through" of one feed into the other? Thanks!
 

goodian

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I've been having this problem ever since i added my second feed. It's so faint i can barely hear it, so I've pretty much given up on troubleshooting it, as I have a noise gate which tends to filter it out. The audio is from the opposing feed, and i don't have a mic attached to the computer. Tried multiple sound cards with different drivers, and didn't solve the issue. I'm interested in hearing others feedback.
 

ProScan

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For a test and to isolate the problem, separate the audio cables so they are not near each other, especially not parallel to each other. If the condition still exists then try to relocate the scanners so they are not near each other. Also may want to try to keep the power cables separated. If the scanners are portable types, use the batteries to see if the condition goes away.
 

goodian

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For a test and to isolate the problem, separate the audio cables so they are not near each other, especially not parallel to each other. If the condition still exists then try to relocate the scanners so they are not near each other. Also may want to try to keep the power cables separated. If the scanners are portable types, use the batteries to see if the condition goes away.

some great ideas, maybe some ferrites on the power and audio cables may be worth a try too.
 

emsflyer84

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Quick update, I separated the audio and power cables this morning as much as possible and it helped a bit. The bleed-through is more faint now then before, but still noticeable. When I have some more time I’ll do some better cable management, right now all the cables are basically balled up in a mess behind the PC.
 
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