Exothermic weld = CadWeld. See
http://en.wikipedia.org/wiki/Exothermic_welding
On 3/16/2013 2:11 PM, Bob Camp wrote:
Hi
Better check the electrical code in your area. They likely are quite specific
about what you can and can't do with a proper ground connection. Copper /
copper welding generally means brazing or soldering. Both are often prohibited
due to the heat burst at the joint during a lightning hit. That surprised me a
bit the first time I ran into it, but made sense once I dug out the explanation.
Bob
On Mar 16, 2013, at 1:42 PM, Don Latham <d...@montana.com> wrote:
ground rods usually thin copper clad over steel. Better to use proper
copper clad clamps with anticorrosion paste than to try to weld.
Don
Martin A Flynn
On 3/10/2013 11:18 AM, Martin A Flynn wrote:
Sorry about the blank messages - not sure why I could not reply to my
own message...
In any case, thanks to the help from kind folks on the list, the
TS-2100L in in the rack at the N2MO amateur radio station at InfoAge.
The N2MO team spent yesterday doing the prep work to mount a 27dB
antenna on the gable end of the building, using 1/2 heliax for feed
line, with a Polyphaser DGXZ + 06NFNF installed in the line before it
enters the building.
The antenna mount pipe and the Polyphaser are grounded via #2 copper
cable that will be exothermic welded to the ground rod.
Thanks again!
Martin Flynn
PS - Now that the precision time bug has bitten, the team, is
considering a Rubidium standard!
Precision time novice needing help ! We have chance to upgrade
(replace) our existing TS-2100-L with a TS2100-GPS system with the
rubidium option.
What questions should we be asking the seller?
* Is there a method to determine the lamp hours from the console?
* Software vintage that corrects the 1PPS issue (or is it relevant)?
While InfoAge is a huge site, it is not a huge budget!
Martin
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