Carl - Yes, yes and yes! The best procedure.
Dean
K3GGN
~~~
On 5/22/2012 7:40 AM, Carl Moreschi wrote:
> The most important thing to disconnect when a lightning storm is coming
> is all power from all equipment. I have all my power connections going
> to a common plug. I pull this one plug and 100% of all my computer and
> radio equipment is now isolated from main power.
>
> The second most important thing to disconnect is the phone and data
> connections coming from outside the house to the computer equipment.
>
> The third most important is to disconnect the antennas from the radios.
>
> Carl Moreschi N4PY
> 121 Little Bell Dr.
> Hays, NC 28635
> www.n4py.com
>
> On 5/22/2012 8:30 AM, Bob McGraw - K4TAX wrote:
>>
>> Here's where I view that people get in trouble. They drive a ground or two
>> and connect it to their radio or station equipment. They plug the radio in
>> the wall plug which has neutral and ground. Neutral and ground are
>> connected at the breaker panel for the house per NEC. The ground at the
>> breaker panel is attached to a driven ground outside, again per NEC. A
>> lightning storm approaches and they disconnect their antennas. A nearby
>> strike, meaning up to 5 miles away, causes the two or more ground points to
>> have different voltage potentials as they are separated by some distance of
>> a few feet to several hundred feet. There is resistance in the earth
>> between the ground points thus with current flowing through the earth there
>> is a difference in voltage between the two or more grounds. Now, what's
>> connected between the two ground points? The radio and station equipment.
>> Therefore, even when antennas are disconnected and the radio is turned off
>> there is a path through the ground and neutral back through the radio or
>> station equipment. It spells failure and we often hear........"but my radio
>> was grounded, my antennas were disconnected and the radio was turned off".
>>
>> The point is the fact that ALL grounds must be bonded together and
>> preferably outside of the structure. This includes a hard electrical
>> connection back to the AC mains ground point.
>>
>> 73
>> Bob, K4TAX
>>
>>
>>
>>
>> ----- Original Message -----
>> From: "Jim WA9YSD"<wa9ysd@yahoo.com>
>> To: "TenTec .com"<tentec@contesting.com>
>> Sent: Tuesday, May 22, 2012 12:52 AM
>> Subject: Re: [TenTec] RFI Issues
>>
>>
>> Sorry Jim
>>
>> When the FCC had checked out my installation cause of an RFI issue, they
>> found that I had a bad solder joint on my shielded ground and fixed it for
>> me. All was well. If the the shielded ground was BS they would have told me
>> and not fix it?
>>
>> Tying station ground to electrical ground low impedance please describe.
>>
>> Existing wiring. The 2 grounds were separated at time of inspection was in
>> code then but is not in code now, residential wiring does not have to be
>> upgraded unless there was remodeling, house was sold, and the sort, so then
>> it needs to be brought up to code at that time.
>>
>> Stay on course, fight a good fight, and keep the faith. Jim K9TF/WA9YSD
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