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DIY GPS notch filter

 
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nuckolls.bob(at)aeroelect
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PostPosted: Mon Nov 05, 2012 1:23 pm    Post subject: DIY GPS notch filter Reply with quote
Got some good feedback from a builder who's fiddling with
the DIY GPS notch filter proposed yesterday. He points
out a need to take care how 'clean' your trim cuts are on
the coax stub. Here's a cut I just made using a "shearing"
style cable cutter on a piece of RG141.

There are no shield strands in danger of shorting the
end of the stub but there's a lot of debris that would
'de-tune' it. Use a fine stiff brush to clean off the
end after the cut is made. Check under magnifying lens
for potential shield-center shorts. Use sharp pointed
tool to push shield strands away from center conductor.
When you're finished with the cut-n-see process, dip the
end of the finished stub in 5 minute epoxy.


[img]cid:7.1.0.9.0.20121105151757.048053e0(at)aeroelectric.com.1[/img]


Bob . . .

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