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Anyone ever cut about 2 inchec of the radio and CB antennae on there bike? Does it affect reception?
 

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If you cut off a CB antenna it affects the SWR (standing wave ratio) it could help it or hurt it but you would have to have an SWR meter to know if it changed it for good or bad. If it makes the SWR too high it can damage the radio.
 

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I alwayt thought that if ant.was not right it would effect standing wave.how would it hurt radio.just would not recive as good or get out as good.should not hurt radio unless there is a short.have done it to a lot of mobile radios did not hurt them.have even forgot to hook up ant.and tryed to talk did not hurt radios..
 

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I don't know how it could hurt the radio but was always told it would. May only apply to the old tube type radios but I just always tried to keep it right when I was in to CBs.
 

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What it doe's is cause high resistance, for the lack of a better word, and will eventually burn the finals out of the radio.
 

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Does the CB antennae fold down, because the radio one does. Why not just fold them down, before driving in? I fold mine every night when I cover it.
 

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mikef wrote:
Does the CB antennae fold down, because the radio one does. Why not just fold them down, before driving in? I fold mine every night when I cover it.
That's what I was wondering as the antennas on my brothers 1500 both fold down.
 

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both fold on the 1800
 

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There you go. Before I cut anything, I fold 'em down. IMHO
 

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You might think I am kidding , but I am not, I had that problem once, so I cut little channels in the garage door!!:cool::cool::cool: Kit
 

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krazy al wrote:
I alwayt thought that if ant.was not right it would effect standing wave.how would it hurt radio.just would not recive as good or get out as good.should not hurt radio unless there is a short.have done it to a lot of mobile radios did not hurt them.have even forgot to hook up ant.and tryed to talk did not hurt radios..
If you didn't hurt the radio without an antenna, you didn't transmit long enough. The way they work is that, when transmitting, the radio output transistors share the load with the antenna. The theoretical maximum power you can get is 50% through the output and 50% out the antenna if the SWR is perfect. In reality, it never gets that good. You will get above 50% power through the output and below 50% out the antenna. The worse the SWR gets, the more power that is sunk by the outputs. With no antenna, 100% of the power goes through the output transitor. Another word for power is heat (measured in watts), meaning lots of heat in the output transitors if no antenna is hooked up.

Anyway, the short story is, if you don't have an antenna hooked up, don't key the mike.
 

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kittyrat wrote:
What it doe's is cause high resistance, for the lack of a better word, and will eventually burn the finals out of the radio.
Not quite, what happens is a high VSWR. A standing wave can be measured point by point along a transmissin line. What you will see is points on the line that have higher voltage than other points. When the antenna matches impedance with the transmission line and the output impedance of the transmitter the VSWR is 1:1 or a flat line meaning that the voltage is the same all along the line. With poor match to the antenna the VSWR goes high at points on the line. If one of those points happens to be the transmitter output transistors they can be destroyed. To protect the transmitter and to get the most power from the transmitter to radiate from the antenna and not merely reflect back into the transmitter it's important to obtain a reasonable match. Your antenna has a center loading coil which electrically lengthens your CB antenna for a decent match to the cable and transmitte. Shorten the antenna and the VSWR will rise. That isn't beneficial. Don't cut it.
 

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Kit Carson wrote:
You might think I am kidding , but I am not, I had that problem once, so I cut little channels in the garage door!!:cool::cool::cool: Kit
The things we do for these bikes.....................:blushing:
 

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WOW What a discussion. I had been folding the antennae down, but was trying to get away from that. I do it when I cover the bike at work. Just being lazy but now I know more about how they function than I ever wanted to know.
 

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And the reason the high voltage reflected back to the final transistor damages them, is because that reflected voltage is higher than the reverse junction breakdown voltage. (This is called the Zener Effect)

once it arcs over through that junction, Game Over.

The punctured transistors short the collector pins to the emitter pins.

No recalls, no new footballs, it is Dead Duck and you get to pay to have the transmitter fixed.
 

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Both mine fold down easy enough. :?
 

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If that dosen't work let the air out of your tires.. That should be good for about 2 inches.........
 

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You would think that because it's a Goldwing we would have electric antennae. :doh:
 
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