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Old 06-08-2010, 10:33 PM   #1
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Concertone AM/FM radio update

Here is a update to the noise in the Concertone AM/FM radio. While in the trailer I happened to turn the radio on & there wasn't any noise/interference. It turns out that I was not hooked to shore power at the time. As soon as I would hook to shore (110) power the noise would come back. Today I talked to Mike at FR & we decided to try installing noise suppressors. At Radio Shack I purchased one for the 12V power line it is called Snap Choke Core part # 273-0069 & one for the antenna coax called Ferrite Data-Line part # 273-0105. I left the radio playing for several hours (hooked to shore power) with no interference!

Mike told me if it worked send him the receipt & he would pay for the parts. Will leave the radio on tomorrow but at this time it appears the problem is solved.
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Old 06-08-2010, 10:40 PM   #2
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COOL

Thanks for the info.
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Old 09-27-2010, 07:25 PM   #3
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Is there a reason for using the 2 different chokes rather than 2 of the same?
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Old 09-28-2010, 08:35 AM   #4
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Yes, the power lead is a single un-shielded wire.
The antenna is a shielded coax wire.
Also it's likely they are attempting to filter different frequencies
from one or the other.
Power interference is usually 60 cycle hum.
Antenna interference probably much higher frequencies.
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Old 09-28-2010, 09:27 AM   #5
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By using two separate chokes it may have been over kill. My wife will tell you that if two nails will do the job Emptypockets will put in three. Yes, I plead guilty.
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Everett & Joan after 60 years together. 2004 1/2 ton Chevy & 2011 Rockwood 1809S

Number of nights camped in 2012 65
Number of nights camped in 2013 82
Number of nights camped in 2014 105!
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Old 10-27-2010, 11:14 AM   #6
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Are you guys talking about the radio, dvd, cd player that comes in the trailer? If so how do you get the dam alarm to work or more so to not work? Each time I take a trip it changed on its own to another time, mostly in the middle of the night. So when I get home and keep it hooked up to 110 again it changes to what ever time and its a pain to deal with.
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Old 10-27-2010, 01:11 PM   #7
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Quote:
Originally Posted by jeepsailor View Post
Are you guys talking about the radio, dvd, cd player that comes in the trailer? If so how do you get the dam alarm to work or more so to not work? Each time I take a trip it changed on its own to another time, mostly in the middle of the night. So when I get home and keep it hooked up to 110 again it changes to what ever time and its a pain to deal with.
Yes that is the unit I put the chokes on. I am not familiar with the alarm you are talking about - can't help you there.
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Number of nights camped in 2012 65
Number of nights camped in 2013 82
Number of nights camped in 2014 105!
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Old 10-28-2010, 10:59 AM   #8
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Quote:
Originally Posted by jeepsailor View Post
Are you guys talking about the radio, dvd, cd player that comes in the trailer? If so how do you get the dam alarm to work or more so to not work? Each time I take a trip it changed on its own to another time, mostly in the middle of the night. So when I get home and keep it hooked up to 110 again it changes to what ever time and its a pain to deal with.
What model do you have?
Does it stay powered up when you are disconnected from shore power?
Are you saying it just changes basically at random?
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