Silly me.... the center part of the sma will rotate and is why the epoxy was 
necessary to prevent tightening of the sma from breaking the joints of the cap. 

Sent from my iBrain

> On Jun 16, 2017, at 10:02 PM, Bdale Garbee <[email protected]> wrote:
> 
> Kieran Sullivan <[email protected]> writes:
> 
>> Might help a bit. Usually the conformal coating just keeps the
>> corrosion down. If you do decide to conformal coat the board, try not
>> to block the pressure sensor :-)
> 
> More importantly, if you conformal coat one of our boards, don't be
> surprised if the RF performance changes.  Different coating materials
> have different dielectric constants, none of which are the same as
> air...  That will impact things like how the filters tune.  But, since I
> haven't ever actually coated a TeleMetrum or TeleMega board (just things
> we've built for AMSAT), I don't know how much effect there might be.
> 
> Bdale
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