[Elecraft] KE: issue with installation of K3EXREF interface

[Ron D'Eau Claire]

Were you only holding the nut while tightening and the ferrule cracked? 

That is the first case I've heard of in the 5 years the K3EXREF option has
been shipped so it's possible there's an issue with some units, especially
since there are two cases.  

I'm curious because we might need to alter the procedure in the manual a bit
if it's something happening during installation. 

73, Ron AC7AC

-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Mike
Cox
Sent: Saturday, April 2, 2016 2:59 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] KE: issue with installation of K3EXREF interface

Mine broke off too. It appeared for be a crimped ferrule but it split and
fell off as though it were already fractured. I carefully soldered the coax
braid to the connector to maintain the electrical connection. I was careful
not to overheat and melt the dielectric of the coax which could have shorted
the center conductor to the shell. It's working well!

Mike, AB9V

On 4/2/2016 16:16 PM, Jim Spears wrote:
> While installing the K3EXREF SMA-TMP cable, I ran into an interesting 
> issue which I do not yet know if it is a problem or just interesting.
>
>   
>
> There is a ferrule or something similar over the cable where it 
> attaches to the SMA fitting that is installed on the back panel.  
> while tightening the hex nut down, I must have torqued something as 
> the ferrule broke into two pieces and fell off.  I finished off the 
> installation and verified that the GPSDO does provide a suitable 10 MHz
signal into the radio.
>
>   
>
> So the question becomes:  is this interesting or a problem?   I took a
close
> look and the problem might be improper grounding of the shield to the 
> chassis at the SMA connector end.
>
>   
>
> If it is deemed to be a potential problem, I can request a new cable 
> from support.  It will not take long to replace the cable.
>
>   
>
> Jim/N1NK
>
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