Re: [Elecraft] K1 FP washers...and another K1 FP PCB Flexing Issue (Rattle Sounds)
Mike and all, It is easier and just as effective to put the tape squares on the back of the front panel board rather than on the 2D connectors. 73, Don W3FPR On 7/19/2013 4:29 PM, Mike Morrow wrote: There's another K1 FP PCB flexing issue that sometimes draws comment. Often the four corners of the front panel PCB do not rest solidly and firmly against the front side of the associated four aluminum 2-D fasteners that are stationary on the body of the K1. This causes a slightly mushy feel when depressing many of the front panel buttons, as the button will recede slightly behind the front panel as the PCB flexes. Then when the PCB corner comes to solid rest on the corner fasteners, continuing to push results in the desired final crisp snap as the button makes up. Another consequence of loose corner fit is that at higher AF volumes of the K1's internal speaker, the FP PCB corners may audibly rattle and vibrate against the metal fasteners. All that can be very easily corrected by putting a small square of foam tape on the front of the 2-D fasteners that are supposed to contact the corners of the FP PCB. I use double-sided foam tape, with the protective layer left in place on the side that will be in contact with the corner of the FP PCB. (This seems like something that should be included with each K1. But it was suggested 12 years ago, and it doesn't seem likely now.) The result is no button mushy feel, and no vibration at higher AF volumes when using the internal speaker. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 FP washers...and another K1 FP PCB Flexing Issue (Rattle Sounds)
David/AC4BN wrote: > I only had one washer on the standoff, and furthermore I had it on > the wrong side of the PC board! I'm glad you found the root cause of your mysterious problem. Probably that construction "fox paws" would be a lot more common, save for the manual's illustration that shows the desired configuration. There's another K1 FP PCB flexing issue that sometimes draws comment. Often the four corners of the front panel PCB do not rest solidly and firmly against the front side of the associated four aluminum 2-D fasteners that are stationary on the body of the K1. This causes a slightly mushy feel when depressing many of the front panel buttons, as the button will recede slightly behind the front panel as the PCB flexes. Then when the PCB corner comes to solid rest on the corner fasteners, continuing to push results in the desired final crisp snap as the button makes up. Another consequence of loose corner fit is that at higher AF volumes of the K1's internal speaker, the FP PCB corners may audibly rattle and vibrate against the metal fasteners. All that can be very easily corrected by putting a small square of foam tape on the front of the 2-D fasteners that are supposed to contact the corners of the FP PCB. I use double-sided foam tape, with the protective layer left in place on the side that will be in contact with the corner of the FP PCB. (This seems like something that should be included with each K1. But it was suggested 12 years ago, and it doesn't seem likely now.) The result is no button mushy feel, and no vibration at higher AF volumes when using the internal speaker. Mike / KK5F __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
