 
| Subject: | |
| From: | |
| Reply To: | |
| Date: | Mon, 14 Feb 2005 08:37:52 -0500 |
| Content-Type: | text/plain |
| Parts/Attachments: |
|
|
Colin,
My concern about using the capacitors is that a lightning hit will probably
exceed their maximum voltage and render them useless.
Steve
On Sunday 2/13/05 21:38 Colin McDonald wrote:
>unless you isolate them in the way i described with coax and the
>capacitors...that apparently isolates the rf from the ground line itself.
>Regards
>Colin
>----- Original Message -----
>From: "Steve Dresser" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Sunday, February 13, 2005 7:35 PM
>Subject: Re: grounding
>
>
> > John,
> >
> > I'd be very skeptical of any device that calls itself an artificial
> > ground. From what I've heard, the best ground is a solid wire running
>from
> > your station ground to a grounding rod. Stranded wires tend to act like
> > miniature antennas.
> >
> > Steve
> >
> > On Sunday 2/13/05 20:18 John Miller wrote:
> >
> > >I have 1 of those MFJ artificial grounds, it seems to work alright but
> > >lately it isn't making it.
> > >----- Original Message -----
> > >From: "Colin McDonald" <[log in to unmask]>
> > >To: <[log in to unmask]>
> > >Sent: Sunday, February 13, 2005 6:14 PM
> > >Subject: grounding
> > >
> > >
> > > > This is a multi-part message in MIME format.
> > > >
> > > > ------=_NextPart_000_0860_01C511E7.293F2990
> > > > Content-Type: text/plain;
> > > > charset="iso-8859-1"
> > > > Content-Transfer-Encoding: quoted-printable
> > > >
> > > > Hi list:
> > > > i think it was John who was saying that he has some grounding problems
>=
> > > > being on the second floor.
> > > > I found a good method of helping to get rid of some of the floating =
> > > > ground problems.
> > > > You use a peace of RG58 coax and put a 4.7 peaka farad seramic =
> > > > capacitor across between the ground shield and center line of the coax
>=
> > > > on each end of the length you will need to go from your station to
>your =
> > > > ground rod or an adequet ground somewhere. Connect the center line of
>=
> > > > the coax to ground and the center of the other end to the radio or to
>=
> > > > your common station ground in the shack. This is supposed to help to
>=
> > > > eliminate floating ground and keep all the extra RF going to ground =
> > > > instead of coming back up your ground line.
> > > > Regards
> > > > Colin
> > > > ------=_NextPart_000_0860_01C511E7.293F2990
> > > > Content-Type: text/html;
> > > > charset="iso-8859-1"
> > > > Content-Transfer-Encoding: quoted-printable
> > > >
> > > > <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
> > > > <HTML><HEAD>
> > > > <META http-equiv=3DContent-Type content=3D"text/html; =
> > > > charset=3Diso-8859-1">
> > > > <META content=3D"MSHTML 6.00.2800.1476" name=3DGENERATOR>
> > > > <STYLE></STYLE>
> > > > </HEAD>
> > > > <BODY bgColor=3D#ffffff>
> > > > <DIV><FONT face=3DArial size=3D2>Hi list:</FONT></DIV>
> > > > <DIV><FONT face=3DArial size=3D2>i think it was John who was saying
>that =
> > > > he has some=20
> > > > grounding problems being on the second floor.</FONT></DIV>
> > > > <DIV><FONT face=3DArial size=3D2>I found a good method of helping to
>get =
> > > > rid of some=20
> > > > of the floating ground problems.</FONT></DIV>
> > > > <DIV><FONT face=3DArial size=3D2>You use a peace of RG58 coax and put
>a =
> > > > 4.7 =20
> > > > peaka farad seramic capacitor across between the ground shield and =
> > > > center line=20
> > > > of the coax on each end of the length you will need to go from your =
> > > > station to=20
> > > > your ground rod or an adequet ground somewhere. Connect the
>center =
> > > > line of=20
> > > > the coax to ground and the center of the other end to the radio or to
>=
> > > > your=20
> > > > common station ground in the shack. This is supposed to help to
>=
> > > > eliminate=20
> > > > floating ground and keep all the extra RF going to ground instead of =
> > > > coming back=20
> > > > up your ground line.</FONT></DIV>
> > > > <DIV><FONT face=3DArial size=3D2>Regards</FONT></DIV>
> > > > <DIV><FONT face=3DArial size=3D2>Colin</FONT></DIV></BODY></HTML>
> > > >
> > > > ------=_NextPart_000_0860_01C511E7.293F2990--
> > > >
> >
|
|
|
