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LC -
I think your problem may be caused by what is referred to as "Common Mode Currents." This is a situation where the rf signal travels back down the coax on the coax braid. this is a common problem in mobiles, especially ones with high SWR (like yours). You can try to eliminate this by winding a "rf choke." Wind about 6' of the coax into a coil of about 6-8 turns. Place each turn right next to the other. Secure the turns together with ty-raps. Wind this choke as close to the base of the antenna as possible. Hopefully this will solve your problem. http://signalengineering.com/ultimate/ For a better explanation try this site. Click on COAX BASICS, and scroll down to ,"why does the coax length affect the SWR of my antenna?" This guy explains it a lot better than me. Good luck

<blockquote data-quote="unit_399" data-source="post: 112735" data-attributes="member: 7311">LC -I think your problem may be caused by what is referred to as &quot;Common Mode Currents.&quot; This is a situation where the rf signal travels back down the coax on the coax braid. this is a common problem in mobiles, especially ones with high SWR (like yours). You can try to eliminate this by winding a &quot;rf choke.&quot; Wind about 6&#039; of the coax into a coil of about 6-8 turns. Place each turn right next to the other. Secure the turns together with ty-raps. Wind this choke as close to the base of the antenna as possible. Hopefully this will solve your problem. <a href="http://signalengineering.com/ultimate/" target="_blank">http://signalengineering.com/ultimate/</a> For a better explanation try this site. Click on COAX BASICS, and scroll down to ,&quot;why does the coax length affect the SWR of my antenna?&quot; This guy explains it a lot better than me. Good luck</blockquote>

[QUOTE="unit_399, post: 112735, member: 7311"] LC - I think your problem may be caused by what is referred to as "Common Mode Currents." This is a situation where the rf signal travels back down the coax on the coax braid. this is a common problem in mobiles, especially ones with high SWR (like yours). You can try to eliminate this by winding a "rf choke." Wind about 6' of the coax into a coil of about 6-8 turns. Place each turn right next to the other. Secure the turns together with ty-raps. Wind this choke as close to the base of the antenna as possible. Hopefully this will solve your problem. [URL]http://signalengineering.com/ultimate/[/URL] For a better explanation try this site. Click on COAX BASICS, and scroll down to ,"why does the coax length affect the SWR of my antenna?" This guy explains it a lot better than me. Good luck [/QUOTE]

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