Noise generated from Parallel Port
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Noise generated from Parallel Port Expand / Collapse
Posted Sunday, January 6, 2008 12:24 PM
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The problem is most prevalent on 28 Mhz (also downconverted
144 Mhz). When I drag the tuning, the parallel input port on the radio
causes noise in the audio and spectrum. It does this even when the radio is
off. Everything is grounded well and I tried an entirely different
computer and parallel cable. I tried grounding different points with the radio off. I found that grounding the 5volt line near the connector helped some. I bypassed the 5 volt line at that point, but that did not cure the problem. This noise also causes the XVTR Tx relay to clatter when that option is checked on the XVTR screen. HELP! Paul WA3GFZ
Post #409
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