Exothermic welding (Cadweld) is the usual method for attaching the down lead
to the clad ground rod.
Regards.
Tom
----- Original Message -----
From: "Don Latham" <[email protected]>
To: <[email protected]>; "Discussion of precise time and frequency
measurement" <[email protected]>
Sent: Saturday, March 16, 2013 1:42 PM
Subject: Re: [time-nuts] GPS Antenna Install
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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--
"Neither the voice of authority nor the weight of reason and argument
are as significant as experiment, for thence comes quiet to the mind."
De Erroribus Medicorum, R. Bacon, 13th century.
"If you don't know what it is, don't poke it."
Ghost in the Shell
Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304
www.lightningforensics.com
www.sixmilesystems.com
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