[Elecraft] KX3 tuning knob friction

[Phillip Shepard]

I'm OK with it, but my encoder shaft does not appear to be free spinning.
Keeping the knob away from the felt washer still shows drag.  I'll give it
some time.  Probably OK as it is.

73,
Phil, NS7P

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net]On Behalf Of Don Wilhelm
Sent: Saturday, June 09, 2012 7:15 PM
To: Joseph Trombino, Jr
Cc: Elecraft at mailman.qth.net
Subject: Re: [Elecraft] KX3 tuning knob friction


Joe,

There is no "grinding" involved, just use the allen wrench supplied to
loosen the VFO knob setscrews and adjust for more or less drag between
the knob and the felt washer.  The optical encoder is quite
"free-spinning", and if there is not enough friction, unexpected
frequency changes can occur while with too much friction, tuning becomes
cumbersome.  The balance point in the middle is an individual decision,
but I believe a totally free-wheeling encoder shaft will give you
problem with unexpected frequency changes.

In other words, put a bit of drag on it, but just how much is an
individual decision - now that you know the pros and cons, accept the
consequences of your decision point.

This is *not* a problem to be fixed, it is an individual decision about
how much drag should be on the VFO knob - as I have said, that is an
individual decision.  Use your best judgement.

73,
Don W3FPR

On 6/9/2012 8:56 PM, Joseph Trombino, Jr wrote:
> My take on this is that there will be probably more home/portable users of
the KX3 than those using it mobile in a car...in any event why not make the
degree of friction adjustable by the user?
>
> I hate to have to grind away trying to turn a main tuning knob when
operating...my K2 knob is adjustable along with the K3...is this friction a
function of the optical encoder used???
>
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html