[R-390] Filter Repair

Bob Camp ham at kb8tq.com
Wed May 8 17:51:47 EDT 2013


Hi

If you just use epoxy, it will fatigue and fail right where it hits the epoxy. What you want is epoxy first and then RTV over that. You don't need a lot, spreading the bend out over 10 diameters isn't very hard. I spent several hundred hours with a vibe machine figuring that out ….

Bob

On May 8, 2013, at 5:37 PM, quartz55 <quartz55 at hughes.net> wrote:

> I've been breaking too many wires off the coils right at the point where it goes into the notch and it's always the one I can't dig out, so here's what I'm doing to try to forstall breaking more of these little wires.  Add some epoxy right on the outside of the coil where the wires come out, there's a bout 1/8 inch before it comes out of the copper cup anyhow.
> 
> http://i251.photobucket.com/albums/gg287/DogTi/R390A/coilglue_zps34e89cff.jpg
> 
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