Mmmm...for 3" strap, it will likely depend on the thickness. You might be
able to get by with a MAPP gas torch. I can do small wire (12 AWG
typically, for ground radials) to 3" copper strap just using MAPP gas no
problem, but if I'm doing anything heavier, I do oxyacetylene. I like 15%
sil-phos (Harris Stay-Silv 15 is what I usually get) - no fluxing, good
flow.
Disclaimer - I'm not a welder, plumber, HVAC tech, etc.. I don't weld/braze
on a daily basis; I'm just passing along what I know and what I've learned
via reading, but even moreso, from my enrollment in the school of hard
knocks.
--- Jeff WN3A
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Randy Elliott
> Sent: Saturday, March 20, 2010 2:32 PM
> To: [email protected]
> Subject: Re: [Repeater-Builder] Ground Strap Installation.
> Best way to run it?
>
>
>
> Thanks Jeff
> I have just learned something new today.
> So you would need an acetylene torch to provide enough heat
> for doing this.
> Randy
>
>
> On 2010-03-20, at 2:04 PM, Jeff DePolo wrote:
>
>
>
>
> >
> > Hi Jeff
> > Just wondering why silver? Lower impedance or higher melt
> > temp or both?
>
> Strength and melting point.
>
> Note that "silver soldering" isn't soldering using soft
> solder that has some
> silver in it, such as tin+silver or tin+silver+copper. Those
> kinds of soft
> solder are often called "silver bearing solder". Silver
> soldering is really
> a kind of brazing. For silver soldering (brazing) copper
> strap, sil-phos
> brazing rods are often used (sil-phos = silver + phosphorus,
> the balance of
> the composition being copper).
>
> --- Jeff WN3A
>
>
>
>
>
>
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