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Becker AR4201 friction between frequency adjustment knobs



 
 
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  #1  
Old September 8th 18, 01:39 AM posted to rec.aviation.soaring
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Default Becker AR4201 friction between frequency adjustment knobs

I have such a radio, and when you turn one of those concentric knobs, the other one turns too, unless you hold it firmly. Thus it takes two hands to turn only one knob. How can I adjust it work as intended?
  #2  
Old September 8th 18, 01:47 AM posted to rec.aviation.soaring
JS[_5_]
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Default Becker AR4201 friction between frequency adjustment knobs

On Friday, September 7, 2018 at 5:39:17 PM UTC-7, wrote:
I have such a radio, and when you turn one of those concentric knobs, the other one turns too, unless you hold it firmly. Thus it takes two hands to turn only one knob. How can I adjust it work as intended?


On most dual concentric knobs, you take off the cap of the smaller (closer) knob and loosen the screw under the cap. Then pull the knob out a bit and tighten the screw. Check it for friction, make sure it's really tight and put the cap back on.
Jim
  #3  
Old September 8th 18, 02:07 AM posted to rec.aviation.soaring
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Default Becker AR4201 friction between frequency adjustment knobs

On Friday, September 7, 2018 at 8:47:09 PM UTC-4, JS wrote:
On Friday, September 7, 2018 at 5:39:17 PM UTC-7, wrote:
I have such a radio, and when you turn one of those concentric knobs, the other one turns too, unless you hold it firmly. Thus it takes two hands to turn only one knob. How can I adjust it work as intended?


On most dual concentric knobs, you take off the cap of the smaller (closer) knob and loosen the screw under the cap. Then pull the knob out a bit and tighten the screw. Check it for friction, make sure it's really tight and put the cap back on.
Jim


Thanks Jim. That did it, and was easy. I had no idea that cap comes off. Was looking for screws on the sides, and there are none.
 




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