[Elecraft] OT: Protecting Toroidal Cores

[CUTTER DAVID]

Would a simple dip in varnish do?
David
G3UNA

> On 02 May 2018 at 12:35 Charlie T <pincon at erols.com> wrote:
> 
> 
> Yeas, but it's a destructive test, like checking the opening current for a
> fuse.
> I would guess that any core, whether ferrite or powdered iron would be
> subject to some water absorbs ion in not coated/painted.
> 
> 73, Charlie k3ICH
> 
> 
> 
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On
> Behalf Of donovanf at starpower.net
> Sent: Wednesday, May 02, 2018 12:56 AM
> To: jim at audiosystemsgroup.com
> Cc: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] OT: Protecting Toroidal Cores
> 
> I have not, but its easy to test! 
> 
> ----- Original Message -----
> 
> From: "Jim Brown" <jim at audiosystemsgroup.com>
> To: elecraft at mailman.qth.net
> Sent: Wednesday, May 2, 2018 4:44:44 AM
> Subject: Re: [Elecraft] OT: Protecting Toroidal Cores 
> 
> On 5/1/2018 9:30 PM, donovanf at starpower.net wrote: 
> > Some mixes will absorb water then crack when frozen
> > 
> Hi Frank, 
> 
> Have you kept track of which mixes have that characteristic? 
> 
> 73, Jim K9YC 
> 
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