[Elecraft] Staking Toroids on K2

[Don Wilhelm]

Mike,

Use NOTHING to secure the toroids other than their leads.  In the 7+ years
of the life of the K2, I have never heard of a failure die to a fractured
toroid lead, and there is one that I know of (I built it) that served for a
couple years as a mobile rig in the cab of an 18 wheeler - I am certain that
one saw more than normal shock and vibration.

Any securing compounds can cause damage - be particularly careful of the
silicone glues.  The GE Silicone II that I have found smells like vinegar
and will cause a green corrosion mess when in contact with copper (could
even destroy the K2)

Elecraft recommends no fixatives for the toroids, and the use of them may
void the warranty, so go forth with it at your own peril.

73,
Don W3FPR

> -----Original Message-----
>
> All,
> My K2, serial no. 05625 is complete and has been on the air for three
> weeks today, but I'm still in the process of adding accessories. I've
> mostly run it on 80 and 40 m with excellent results.
>
> One question I have for the group- Has anyone found a need for
> protecting the vertically mounted toroid inductors from mechanical shock
> events during portable operations? If so, what staking material is
> recommended? I am concerned about degrading exposed conductors with
> anything I might use for an adhesive. I think the GE Silicone II
> adhesive I have on hand is used for preventing corona or ionization
> around high voltage terminals so maybe it would be a good candidate?
>
> 73
> Mike Mussler
> AI8Z
> K2 serial 05625
>
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