[time-nuts] Double ovened 10811-60158 on ebay

[Rick Karlquist]

We didn't use the epoxy for encapsulation.  We used to in place
of soldering to see if we could replace solder with epoxy.  Nope.

Is polyimide or PTFE board less hygroscopic than FR-4?  Anyway,
we didn't try that (too much trouble).

Rick Karlquist N6RK


Mike S wrote:
> At 03:42 PM 7/20/2008, Rick Karlquist wrote...
>>Obviously, the first thing I tried was to replace the trimmer with
>>a fixed capacitor.  Didn't help.
>
> Did you do any testing of encapsulation materials, other than epoxy?
> Surely 3M has some fairly impermeable stuff in their kit. AIR from last
> time I was into a 10811, there's no coating on the components/pcb,
> other than a solder mask.
>
> What about polyamide or PTFE PCBs?
>
>