[Elecraft] K3 Concentric Knobs

[Robert Dorchuck]

Mouser has a set of machined aluminum knobs that work very
well - they are black and match pretty well.  Part number is:
506-KN5700B1/4 .  Not cheap but they will last.

Bob  W6VY
----- Original Message ----- 
From: "Bill W4ZV" <btippett at alum.mit.edu>
To: <elecraft at mailman.qth.net>
Sent: Monday, April 13, 2009 8:14 AM
Subject: Re: [Elecraft] K3 - 3.06 and KRX3


>
> UA9CDC:
>
>>4) AF knob has recently fallen apart. I have discussed that with 
>>several
>>other users here in Russia and found that it is pretty common case. 
>>It would
>>be good to have substitute knobs made of some better  plastic or 
>>aluminum.
>>Is there a source somewhere in the US?
>
> Google concentric knobs???  I had one break as well about a year and 
> a half ago due
> to slightly over-tightening it.  No problems since.
>
>
> My first unit had the same problem.  After replacing that knob and 
> building 2 additional K3s, I've had no further problems.  I believe 
> this is a matter of learning not to over-torque the knob screws (I 
> routinely do this to things).  I'm happy to learn that Russians are 
> just as heavy handed as I am.  :-)
>
> 73,  Bill
>