[Elecraft] Improved KIO3A Immunity to EMP

[Pete Smith N4ZR]

I was using a serial port protector made by Tripp-lite when I lost my 
second KIO3A, but the wire connecting my computer to a single-point 
ground had come adrift, and several people commented that this probably 
caused the failure.  On the other hand, I have been using serial-port 
controlled radios for 15 years at this QTH, and never had sucha  failure 
- perhaps the transceiver chips in those radios are just made tougher.

73, Pete N4ZR
The World Contest Station Database, updated daily at www.conteststations.com
The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com,
spots at telnet.reversebeacon.net, port 7000 and
arcluster.reversebeacon.net, port 7000


On 5/24/2012 10:29 AM, VE3GNO Daniel wrote:
> Hi
> I tried to use serial port isolator with 5 wires to get better 
> lightning protection. I have 5 of these
> http://www.ebay.ca/itm/RS-232-serial-port-photoelectric-isolator-/140677527776?pt=LH_DefaultDomain_0&hash=item20c108b8e0 
> <http://www.ebay.ca/itm/RS-232-serial-port-photoelectric-isolator-/140677527776?pt=LH_DefaultDomain_0&hash=item20c108b8e0>
> with 5 wires dc separation. With my FT5K worked fine but for some 
> reason with K3 is not working. I should investigate closer the root 
> cause, maybe levels or maybe something else, that sounds like a plan 
> for the next "electrostatic" season. THe idea to get separation on 
> serial port makes me feel safer when comes to lightning.
>  73
> VE3GNO Daniel
> *From:* Pete Smith N4ZR <n4zr at contesting.com>
> *To:* Elecraft List <elecraft at mailman.qth.net>
> *Sent:* Thursday, May 24, 2012 9:43:30 AM
> *Subject:* [Elecraft] Improved KIO3A Immunity to EMP
>
> Is this problem on anyone's radar screen at Elecraft?  We're in
> lightning season again, and while I've done everything I can think of, I
> live in fear of another U1 failure.
>
> -- 
> 73, Pete N4ZR
> The World Contest Station Database, updated daily at 
> www.conteststations.com
> The Reverse Beacon Network at http://reversebeacon.net 
> <http://reversebeacon.net/>, blog at reversebeacon.blogspot.com,
> spots at telnet.reversebeacon.net, port 7000 and
> arcluster.reversebeacon.net, port 7000
>
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