From: Rik Strobbe <Rik.Strobbe@fys.kuleuven.be>
To: "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org>
Date: Wed, 21 Apr 2010 10:16:13 +0200
Thread-Topic: Mal's gold contacts
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Paul,

besides king's water (aqua regia) also mercury interacts with gold, formin=
g a metallic bond.
Regarding king's water: despite the fact that silver is far less noble tha=
n gold it is immune to king's water.
But now we are far off topic ....

73, Rik  ON7YD - OR7T

________________________________________
Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.or=
g] namens Paul A. Cianciolo [paulc@snet.net]
Verzonden: dinsdag 20 april 2010 20:06
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: LF: Mal's gold contacts

Mal,

Silver will oxidize..   Gold on the other handle is one the most stable of
metals.
As a amateur gold prospector, I can tell that gold can survive thousands=
 of
years under water with out any corrosion.

Very few acids will attack or dissolve gold, the only one I know is Aqua
Regia which is a concentrated mix of Nitric and Hydrochloric acid.

Hence the phrase used here in the USA when questioning the validity of a
idea et.... "Does it pass the acid test?"

BTW Gold has a specific gravity of 19.33  nearly twice that of lead at 11.=
4

PauLC
W1VLF

Owner of many weird hobbies



-----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org
[mailto:owner-rsgb_lf_group@blacksheep.org]On Behalf Of mal hamilton
Sent: Tuesday, April 20, 2010 1:40 PM
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: EARTH





Rik
I have not investigated gold v silver but high quality low loss plugs/sock=
et
pins are gold plated, if what you say is correct why not silver?
mal/g3kev

----- Original Message -----
From: "Rik Strobbe" <Rik.Strobbe@fys.kuleuven.be>
To: <rsgb_lf_group@blacksheep.org>
Sent: Monday, April 19, 2010 6:42 PM
Subject: RE: LF: EARTH


Mal,

the conductivity of silver is better than that of copper. But the differen=
ce
is marginal, the main advantage is that silver will not oxidate as much as
copper (metal oxides are rather poor conductors). That is why silver plati=
ng
makes sense, in particular on very high frequencies (where skin depth is
small, but solid silver wire does not (apart from the fact that is will
break very easy).
However, the conductivity of gold is worse than that of silver and copper,=
 I
don't think that there is any good reason to use gold plated antennas (may=
be
except for vanity).

73, Rik  ON7YD

________________________________________
Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.or=
g]
namens mal hamilton [g3kevmal@talktalk.net]
Verzonden: maandag 19 april 2010 17:47
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: EARTH

Mike
Silver is ideal and better than copper but in California and possibly Texa=
s
they prefer GOLD, listen to those big W6 and W5 signals. I think W6AM had=
 a
gold plated rhombic around the mid 50's. The heyday of amateur radio befor=
e
the appliance operator appeared.
Nice to hear from you

de mal/g3kev

----- Original Message -----
From: "WE0H-Mike" <we0h@gmx.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: Monday, April 19, 2010 4:15 PM
Subject: Re: LF: EARTH


> I run 11,100 feet of radials for my HF and 600m antennas. It works great
but I have lots of wire and lots of time to put them in the ground...hi hi
>
> As Mal said, using a good antenna and a few radials will work good. Use=
 a
poor antenna and many radials and expect a compromise performance.
>
> I have been finding that using silver plated Teflon insulated wire for=
 my
antennas and any coils, that my antennas seem to radiate well. I think the
silver plating has a lower A/C resistance than copper which lowers the wir=
e
losses.
>
> Mike
> WE0H
> WD2XSH/16
>
>
>
>
>
>
>
> Mobile on  my BlackBerry
>