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Classic Truck Discussion Board

Topic: CB radio
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Barn Sour

06-30-2008 20:04:37
216.180.177.47
30000



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need to chat with some of you CB radio Guru's about why my CB takes the meter to red and turns on the antenna light, with any antenna I try, new radio & mike (twice), grounded cab to frame, moved antenna, and all the etc's I can think up.

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Kentb of SWMO

07-01-2008 06:40:01
71.30.135.87
30003



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Re: CB radio in reply to Barn Sour, 06-30-2008 20:04:37  
Connect transmitter to a 50 ohm dummy load. If the warning light STILL come on you have an internal radio problem. If ok on the dummy, you have cable or antenna isssues.

Kent, AKA WD0DYY

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Barn Sour

07-01-2008 20:35:26
216.180.177.70
30008



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Re: CB radio in reply to Kentb of SWMO, 07-01-2008 06:40:01  
What would the 50 ohm dummy load be? I assume connected to the antenna outlet.

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Kentb of SWMO

07-02-2008 04:47:17
71.30.135.114
30012



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Re: CB radio in reply to Barn Sour, 07-01-2008 20:35:26  
A Dummy Load is a piece of test equipment that is used when testing/repairing transmitters. It is connected to the antenna connection of the transceiver.

Kent

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willie in mn`

07-01-2008 04:30:37
205.188.117.76
30002



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Re: CB radio in reply to Barn Sour, 06-30-2008 20:04:37  
Antenna length not adjusted right. Length is critical, 1/8th inch off can mess it up. Talk to the people at store where you bought antenna. SWR meter is needed. They can sell you a SWR meter for around 30 bucks & explain how to use it, do it themselves, or refer you to someone locally that can do it.
HTH
Willie

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Barn Sour

07-01-2008 20:45:39
216.180.177.70
30009



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Re: CB radio in reply to willie in mn`, 07-01-2008 04:30:37  
Thank you. I thought your advice was the cure. SWR meter read below 2,but when I disconnected the meter, the radio meter went to the 3+ again and turned on the antenna warning light. So I went to another truck, new antenna lead, different radio, or the same radio-same result-runs the radio swr meter into the 3+ zone. Changed to a 48" antenna and same result.

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