[Elecraft] NEED TO VISIT THIS LINK (was: Rf chokes too large?)

[Ron D'Eau Claire]

No. Do not change any installed RFC's. 

As the note explains, it's quite possible to break the connections inside
the inductor by bending the leads too tightly at right angles to the main
body, especially on the smaller sub-miniature units. One wants to be careful
about bending the leads on the inductors as the alert explains. But, if you
have a broken inductor, you unit will not pass the performance tests (as
several builders discovered).  

Also, as Elecraft changes to lead-free RoHS-compliant parts they are finding
that some of the sub-miniature inductors do not have RoHS equivalents and a
slightly larger unit must be used. These parts can be used quite easily, but
they require the leads be reformed in a slightly different manner. The alert
explains how to do that.

Ron AC7AC



-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Tom McCulloch
Sent: Tuesday, January 09, 2007 6:33 PM
To: elecraft at mailman.qth.net; Tom Hammond
Subject: Re: [Elecraft] NEED TO VISIT THIS LINK (was: Rf chokes too large?)


Tom,
 Can you elaborate on the reason for the change?  Is it a construction thing

or an operational improvement.  In other words, if my K2 is happy should I 
be concerned about replacing the RFC's already installed?

thanks
Tom
WB2QDG
k2 1103
----- Original Message ----- 
From: "Tom Hammond" <n0ss at earthlink.net>
To: <elecraft at mailman.qth.net>
Sent: Tuesday, January 09, 2007 1:11 PM
Subject: [Elecraft] NEED TO VISIT THIS LINK (was: Rf chokes too large?)


> EVERYONE WHO BUILDS A NEW ELECRAFT KIT SHOULD READ THIS APPLICATION 
> NOTE!!!
>
> It deals with the fact that Elecraft appears to have bitten the bullet
> and
> substituted heavier-duty (and slightly larger) RFCs for many of the 
> sub-mini RFCs used in their kits. The end product will be fewer damaged 
> RFCs and happier builders. BUT you do NEED to know how to handle/install 
> the newer RFCs since they might not fit directly into the available 
> holes... here's how.
>
>>http://www.elecraft.com/Apps/Builder_Alert_Installing_Small_Chokes.htm
>
> Thanks to Elecraft for this app note!
>
> 73,
>
> Tom   N0SS
>
>
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