I have no idea what the big deal is with putting a hole in the basement
floor. I did to drive in a ground rod. Even though we are low to the rest
of the subdivision, water has never been a problem and the seal between the
rod and the concrete is tight enough. I did not have to put any sealant
around the rod at all. Works great. Highly recommended.
I still have the antennas grounded with rods outside and have lightening
arrestors on every coax line.
Duffy
www.wb8nut.com
-------Original Message-------
From: tentec@contesting.com
Date: Wednesday, December 10, 2003 4:53:18 PM
To: tentec@contesting.com
Subject: Re: [TenTec] RE: Power Supply & Equip. grounding
You definitely do not want a hole in the basement floor. Nor do you want RF
in the shack. But that does not mean you need an RF ground in the shack.
Where RF is concerned, any RF in the shack should be confined to the insides
of the various boxes that make up your station; i.e. the tranceiver,
amplifier,tuner, as well as the assorted jumpers, switches, etc.. All the
boxes are designed to keep RF confined, the cableing should be.
Unless you have one tremendous leak from one of those boxes or an
interconnecting cable, RF in the shack is coming from outside the shack. And
almost invariably any RF in the shack is coming back down the outside of one
or more transmission lines. And the best and most appropriate place for to
stop that is between the shack and the antennas, preferably as close to the
antennas as it is feasable to put them.
By preference, I put an effective ground system with a lightning arrestor
for each coax at the base of each tower. There is a current balun between
each arrestor and the coax entrance panel to the shack. The combination of
solidly grounded arrestor and current balun keeps RF well away from the
shack. No RF in the shack, no need for an RF ground in the shack. Nor for an
"artificial antenna," a counterpoise, or any of the other dodges people use
as a substitutute for an effective RF ground.
73 Pete Allen AC5E
> the best ground wire is short and large conductor or braid ...my nephew
has
> his ground wire of about 3 feet from the back of his radio to an 8 foot
> ground rod driven into the ground under his basement floor ...he
encouraged
> me to do the same ...but i am not sure i want a hole in my basement floor
HI
> jack
>
> ----- Original Message -----
> From: "Michael Melland, W9WIS" <w9wis@charter.net>
> To: <tentec@contesting.com>
> Sent: Wednesday, December 10, 2003 7:35 AM
> Subject: Re: [TenTec] RE: Power Supply & Equip. grounding
>
>
> > >HOWEVER, if the station ground is connected to the house/station
> electrical
> > service at the breaker panel, there will be no >potential difference
> between
> > grounds and therefore no ground loop.
> >
> >
> > Agreed..... but then I'd have a 50 foot long ground wire <grin>..... my
> > power panel is 50 ft from the shack on the other end of the house. I
> > suppose I could run a circular heavey wire under ground around the house
> and
> > then attach my station ground to it. It seems that perhaps the perfect
> > electrical ground scheme and the perfect rf ground system are often not
> the
> > same ?
> >
> > Mike, W9WIS
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
.
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|