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radio reception bad when antenna plugged all the way in
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<blockquote data-quote="keep_hope_alive" data-source="post: 7369173" data-attributes="member: 576029"><p>Sounds like an antenna grounding issue.</p><p></p><p>One quick and dirty fix would be to wrap electrical tape around the outer shield connection (not the center pin). That would insulate the shield from the head unit, which seems to be when you have the issue. When the antenna shield comes in contact with the head unit shield connection. This is typically a simple grounded connection, but you have something else going on.</p><p></p><p>Also, try grounding the head unit to chassis.</p><p></p><p>I would want to measure voltage and continuity and resistance associted with the antenna. I would get everything operational but leave access to the antenna wire. Then, with the antenna disconnected, measure DC Voltage on the center pin referenced to chassis, shield reference to chassis, and center pin referenced to shield. With everything disconnected and off, I would measure resistance between pin and shield, between pin and chassis, and between shield and chassis.</p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 7369173, member: 576029"] Sounds like an antenna grounding issue. One quick and dirty fix would be to wrap electrical tape around the outer shield connection (not the center pin). That would insulate the shield from the head unit, which seems to be when you have the issue. When the antenna shield comes in contact with the head unit shield connection. This is typically a simple grounded connection, but you have something else going on. Also, try grounding the head unit to chassis. I would want to measure voltage and continuity and resistance associted with the antenna. I would get everything operational but leave access to the antenna wire. Then, with the antenna disconnected, measure DC Voltage on the center pin referenced to chassis, shield reference to chassis, and center pin referenced to shield. With everything disconnected and off, I would measure resistance between pin and shield, between pin and chassis, and between shield and chassis. [/QUOTE]
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radio reception bad when antenna plugged all the way in
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