[Elecraft] K3 RS232 no data out

[Tom W8JI]

Pete,

I take hits directly on my towers all the time, and I never disconnect the 
K3 or any other rig. Of course my closest tower is about 150 feet away, so 
this might not work if you get a hit just feet away where the EMP is huge, 
but a good system will significantly reduce chances of a problem. With the 
spacing I have from towers to house the problems are virtually gone, this 
includes the contest barn that is only about 75-100 feet from the one 200 
foot tower.

http://www.w8ji.com/station_ground.htm

73 Tom


----- Original Message ----- 
From: "Pete Smith" <n4zr at contesting.com>
To: "Monty Shultes" <montys at mindspring.com>
Cc: "elecraft at mailman.qth.net" <Elecraft at mailman.qth.net>
Sent: Wednesday, June 09, 2010 2:53 PM
Subject: Re: [Elecraft] K3 RS232 no data out


> Hi Monty - what is odd to me is that in 20 years of computer-aided
> operating, this is my first RS-232 failure, and it wasn't even that
> impressive a storm.  Closest hit was ~1000 feet.  Anyway, it's an
> expensive lesson.  I wonder if making *really* sure of a good common
> ground between radio and computer might also help (?).
>
> 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
>
>
> On 6/9/2010 6:54 AM, Monty Shultes wrote:
>> Every summer I write this little note.  If you see lightning or hear
>> thunder, disconnect all cables and wires to your K3.
>>
>> Not just the antennas.  Not just the PowerPole.  The key lines, ALC,
>> IF out, LINE IN, LINE OUT, headphone, mic(s), RS232, Accessory,
>> ground, speaker lines, too.
>>
>> I had lightning damage 2 years ago when my K3 was brand new.  Never
>> again, I hope.
>>
>> Monty  K2DLJ
>>
>>
>>> I wonder if there is anything that can be done (on the board, for
>>> example, or in an outboard box) to decrease the vulnerability of U1
>>> (written as I await my replacement KIO3A board).
>>>
>>> 73, Pete N4ZR
>>>
>>
>>
>>
>>
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