is a stainless steel countertop generally grounded to the house electrical
system?
73
Colin, V A6BKX
--------------------------------------------------
From: "Steve Dresser" <[log in to unmask]>
Sent: Tuesday, November 26, 2013 2:59 PM
To: <[log in to unmask]>
Subject: Re: Re-station ground
> Colin,
>
> I'd caution against using the grounding of the electrical outlets as a
> station ground. I lived in a house where the electrical ground of the
> outlets had 150 volts which I measured between it and a stainless steel
> counter in the kitchen. It turned out that the house's electrical system
> wasn't grounded to anything in the known universe.
>
> Steve
>
> ----- Original Message -----
> From: "Colin McDonald" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, November 26, 2013 16:31
> Subject: Re: Re-station ground
>
>
>> you already have a ground between the tuner and the radio via the coax
>> shield...
>> You already have full chassis ground through the ground prong on the AC
>> power.
>> However, to avoid RF hot spots on the chassis of your equipment, it is
>> advisable to use another earth ground of some kind for your
>> equipment...either via a ground rod, or to the main electrical ground of
>> the
>> house such as the city side of the water meter on the cold water pipe, or
>> connected to the ground rod used by the electrical of the house if there
>> is
>> one.
>> Also, having a separate ground rod just for the station is good because
>> that
>> can also be used for both RF and electrical ground and will help in the
>> case
>> of a nearby lightening strike etc.
>> You need to use a ground bus, and have a wire from each piece of
>> equipment
>> connected to that common bus...do not daisy chain the grounds together.
>> In
>> other words, your grounding has to be paralel, not series.
>> If it's electrical ground, the wire length doesn't matter at all...but if
>> you are going after an RF ground, the length of the ground wire may, if
>> you
>> are using a non-resonant antenna, or latter line or long wire and a
>> tuner,
>> effect the tuning of the antenna.
>>
>> Often an additional ground for the station equipment is not necesary as
>> the
>> AC ground takes care of it, but sometimes you may need it if you find you
>> are having issues with RFI in your audio, or excessive noise on receive
>> or
>> if you are causing RFI to other electronics in the house or with your
>> neighbors.
>>
>> 73
>> Colin, V A6BKX
>> --------------------------------------------------
>> From: "Mike Ryan" <[log in to unmask]>
>> Sent: Tuesday, November 26, 2013 1:10 PM
>> To: <[log in to unmask]>
>> Subject: Re-station ground
>>
>>> So if I have a ground wire running from my ATU's ground stud to the back
>>> of
>>> the rig's ground stud, considering my rig has a built in power supply
>>> and
>>> a
>>> 3 prong plug, this will be fine?
>>>
>>> Mike
>>
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