RF problem & Serial to Serial cable with built-in chokes

[RLVZ]

Would anyone know of  a good quality Serial to Serial  cable that's
available with built-in chokes?  (chokes built onto the  serial cable similar to
monitor cables)   I've done some internet  searches and haven't found any.  
 
I'm having problems with RF getting into my  computer and locking it up.  
I'm suspecting the Serial to Serial cable between the CPU and the K3.   I've
tried different serial cables, different computers, tried snap on  chokes
from Radio Shack, tied all equipment into a common ground... all without  any
benefit.  (my antennas have low SWR's and I don't use an Antenna  Tuner).  
 
If a serial to serial cable with built-in chokes is unavailable, should I
expect much better results from snap on  Fair-Rite chokes over Radio Shack
chokes?
 
Thanks & 73,
 
Dick- K9OM
 
 
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[tnnyswy]

Hope Jim's article is of help to you.

http://audiosystemsgroup.com/CoaxChokesPPT.pdf

((((73)))) Milverton

>________________________________
> From: "[hidden email]" <[hidden email]>
>To: [hidden email]
>Sent: Sunday, June 16, 2013 8:16 PM
>Subject: [Elecraft] RF problem & Serial to Serial cable with built-in chokes
>
>
>Would anyone know of  a good quality Serial to Serial  cable that's
>available with built-in chokes?  (chokes built onto the  serial cable similar to
>monitor cables)   I've done some internet  searches and haven't found any. 
>
>I'm having problems with RF getting into my  computer and locking it up. 
>I'm suspecting the Serial to Serial cable between the CPU and the K3.   I've
>tried different serial cables, different computers, tried snap on  chokes
>from Radio Shack, tied all equipment into a common ground... all without  any
>benefit.  (my antennas have low SWR's and I don't use an Antenna  Tuner). 
>
>If a serial to serial cable with built-in chokes is unavailable, should I
>expect much better results from snap on  Fair-Rite chokes over Radio Shack
>chokes?
>
>Thanks & 73,
>
>Dick- K9OM
>
> 
>______________________________________________________________
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:[hidden email]
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html
>
>
>

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[W Paul Mills]

You might want to try optical isolation instead.
A couple of sources:
<http://www.telebyteusa.com/catalog/products/9268.htm>
<http://www.bb-elec.com/Products/Serial-Connectivity/Isolators-Repeaters/Isolated-RS-232-Repeaters.aspx>

On 06/16/2013 08:16 PM, [hidden email] wrote:

> Would anyone know of  a good quality Serial to Serial  cable that's
>  available with built-in chokes?  (chokes built onto the  serial
> cable similar to monitor cables)   I've done some internet
> searches and haven't found any.
>
> I'm having problems with RF getting into my  computer and locking
> it up. I'm suspecting the Serial to Serial cable between the CPU
> and the K3.   I've tried different serial cables, different
> computers, tried snap on  chokes from Radio Shack, tied all
> equipment into a common ground... all without  any benefit.  (my
> antennas have low SWR's and I don't use an Antenna  Tuner).
>
> If a serial to serial cable with built-in chokes is unavailable,
> should I expect much better results from snap on  Fair-Rite chokes
> over Radio Shack chokes?
>
> Thanks & 73,
>
> Dick- K9OM

--
/*************************************************
* Amateur Radio Station AC0HY                    *
* W. Paul Mills         SN807                    *
* Assistant EC Alpha-1 ARES Shawnee/Wabunsee, KS *
* President Kaw Valley Amateur Radio Club        *
*************************************************/
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