[Elecraft] Re: K1-4 Filter Board New Trimmer Caps

[Gene Worth]

Vin:

Just assembled K1 #1945 with the K1-4 option. Like you, I had some 
questions about the new trimmer caps during assembly. I did my best with 
understanding the directions and still installed them backwards ... 
consistently though.

The only problem with installing them backwards is that you must use a 
ceramic adjustment tool on alignment, or the adjustment tool causes the 
frequency adjustment to be flawed.

Now, after having done it backwards, I'll just point you to the errata 
sheet. It tells you the shape and which is considered the "flat" end. I 
installed them backwards from the Errata sheet ... and don't remember 
which now, but the Errata sheet is correct.

Hope this helps.

73,

gene KC0RXY

elecraft-request at mailman.qth.net wrote:
------------------------------

Message: 18
Date: Wed, 9 Feb 2005 15:42:38 -0500
From: "V Cortina" <vcortina at hvc.rr.com>
Subject: [Elecraft] K1-4 Filter Board  New Trimmer Caps
To: <Elecraft at mailman.qth.net>
Message-ID: <001601c50ee7$e4c9ecc0$6501a8c0 at hvc.rr.com>
Content-Type: text/plain;	charset="iso-8859-1"

Perhaps I am reading something wrong here, but...

The new trimmers are correctly identified in the "Manual Errata", and it 
mentions they have a different shape from the old ones.  It says the 
narrow flattened end of the new ones correspond to the flat side as 
shown in the manual's figure1.  So far, so good.  The manual ALSO says 
proper insertion is critical so as to keep the rotor terminals at ground 
potential.  But when I insert the caps in this orientation, the exact 
opposite seems to be true, the pin which is electrically common to the 
rotor is NOT at the ground point on the Filter PC Board, the opposite 
pin is!

I can't imagine I am misunderstanding what the "narrow, flattened end" 
is, although, for the record, both ends are flattened.  But only one is 
narrow.

Any ideas guys?  I am bummed that I got exactly ONE part (R1) in before 
hitting my first snag.  But, we do it right the first time, right?


Thanks much!


Vin KR2F