[Milsurplus] Metal to crystal bond

[Bob kb8tq]

Hi

I worked in several factories that made solder seal crystals. They
all did it the way I described …..

Bob

> On May 21, 2020, at 9:03 PM, Robert Nickels <ranickel at comcast.net> wrote:
> 
> On 5/21/2020 7:36 PM, Bob kb8tq wrote:
>> 
>> If it is indeed solder sealed, the “factory” approach is to have a block on a hot plate.
> 
> I'd be pretty sure the factory method was to put the crystal-base subassembly into the can with a solder preform in between, then reflow the solder using an induction heater.   Here is a video showing the same process being used to solder RF connector assemblies:
> 
> https://www.youtube.com/watch?v=FFhKZEF_1yY
> 
> You can buy them online for under $10 on up, here's a video showing the smallest cheapest one (($6 from Bangood) being used to heat a PL-259 for soldering:
> 
> https://www.youtube.com/watch?v=xwOAhMHwyhQ
> 
> Bangood: https://usa.banggood.com/Geekcreit-5V-12V-ZVS-Induction-Heating-Power-Supply-Module-With-Coil-p-1015637.html
> 
> 73, Bob W9RAN
> 
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