[time-nuts] GPS Antenna on Tower.
shalimr9 at gmail.com
Tue Jun 20 08:11:08 EDT 2017
If that is not time-nutty, I do not know what will :)
On Jun 20, 2017 7:04 AM, "jimlux" <jimlux at earthlink.net> wrote:
> for geodetic measurements, they drill a hole down to bedrock, and run a
> pipe down to anchor the antenna to the bedrock.
> "All holes shall be drilled straight enough so that PVC casing can be
> installed in the top 15.5 ft of each hole, and that the steel pipe can be
> freely lowered, not forced, for its entire 35 ft length."
> Google for Ken Hudnutt's or Frank Webb's papers
> or a 3m tall monument for a CORS station
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