Loose 572B Plate cap

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Topic: Loose 572B Plate cap (Read 1366 times)

W4OP

Member

Posts: 274

Loose 572B Plate cap

« on: November 07, 2011, 06:02:59 PM »

One of my 572's plate cap is a bit loose. Is there a hi temp cement that can be used to secure it?

Tnx,
Dale W4OP


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AD4U

Member

Posts: 1898

« Reply #1 on: November 07, 2011, 06:07:12 PM »

Over a year I repaired a loose plate cap on a 8950 tube in a Swan 700CX with JB Weld. Even with the extreme heat, so far so good.

Dick AD4U


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AG6K

Member

Posts: 1

« Reply #2 on: November 07, 2011, 07:57:51 PM »

One of my 572's plate cap is a bit loose. Is there a hi temp cement that can be used to secure it?

Tnx,
Dale W4OP

 Dale -- General electric, red/hi-temp silicone rubber bonds to glass if the glass i's cleaned with acetone or methyl ethyl ketone.
Rich, ag6k


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NJ3U

Member

Posts: 107

« Reply #3 on: November 09, 2011, 05:02:18 AM »

OK, so now we have the cap afixed, any pointers on the electrical connection ? Silver / Lead / Resitance soldering ?


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W8JX

Member

Posts: 4036

« Reply #4 on: November 09, 2011, 06:01:46 AM »

You should have silver solder it BEFORE you glued it to envelope to minimize heat transfer during soldering. I would use tin/lead solder now.


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