[Elecraft] K3, KX-1 Inductors

[Gary]

Since 2008 k3 #679 has enjoyed life "on the road", constantly moving from one scenic location to the next.
Nothing seems to have been shaken loose over this time.
I would think by now that if anything was susceptible to working loose it should have had a Murphy incident by now?

Elecraft it appears knew about my requirement and developed the k3 just for this style of operating....grin

73
Gary 

-----Original Message-----
From: "David McAnally" <david.mcanally at gmail.com>
Sent: ‎27/‎03/‎2016 4:11 AM
To: "Scott Ellington" <k9ma at sdellington.us>
Cc: "K3 List" <elecraft at mailman.qth.net>
Subject: Re: [Elecraft] K3, KX-1 Inductors

I have taken my K3 (S/N 6493), KPA500 and KAT500, in padded pelican cases,
over thousands of miles on the road with no apparent problems.  Of course,
this is anecdotal evidence, not before and after specification testing. But
my travel includes some of the worst Oklahoma county roads where there are
more potholes and patch bumps, than original road surface. Gravel washboard
would be smoother. If Elecraft didn't find a need for additional component
support after this many years, I trust their engineering. I worked in
mobile FM business and government radio manufacturing. Those radios
generally had no additional component support on PCBs. They were tested and
met some of the most severe vibration and temperature  specification
requirements.  Perhaps not a apples to apples comparison, but I don't
expect a problem with the K3 line.

David M.
WD5M

On Fri, Mar 25, 2016 at 11:24 PM, Scott Ellington <k9ma at sdellington.us>
wrote:

> My K3 hasn't traveled much, but if it did, I'd be very concerned about all
> the inductors supported only by their leads.  It seems certain that
> vibration would result in leads breaking.  However, there's a note in the
> KX-1 assembly manual specifically warning against fastening the inductors
> to the board with adhesive.  (That's exactly what I was planning to do.)
> Why not?  I doubt the reason is electrical, unless it's stray capacitance.
> The only other reason I can think of is that those handling power might get
> hot enough to melt an adhesive.  If that's the case, I'd really like to
> find another way to secure them.  Any suggestions?
>
> Or maybe someone can assure me that with all those K3 getting shipped all
> over the planet for DX-peditions, etc., none of those wires ever break.
> Ever.  (I'd still take along some magnet wire.)
>
> 73,
>
> Scott  K9MA
>
> --
> Scott Ellington  K9MA
> Madison, Wisconsin, USA
>
> k9ma at sdellington.us
>
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