D3 GPS-Antenna Adaptor Information
Photo here
Introduction
The adaptor was designed with the aims
that a GPS antenna could be removed and replaced to
within ~0.1 mm without great care
(both horizontally and vertically, and also that the azimuthal
alignment was maintained),
that the mounting be ``fixed height,''
that the antenna could be leveled (from 2.5-degrees of tilt, easily,
and up to 5-degrees with special modifications),
be resistant to vandalism,
and be as short as possible.
Each of the drawings is available in both PostScript (to download and send
to your local printer) and GIF (to view with your web browser) formats.
Design and Construction Drawings
SCIGN D3 Antenna Adaptor
- The Assembly Procedure for the D3 Adaptors (Version 2.1; 7/6/99)
is available as either:
GIF format (88 kB), or
PostScript format (48 kB)
The GIF images (above, and the trial single-page versions that follow)
are currently not very useful. We will improve this soon.
The trial page-by-page gif versions of the
text are small files as stored but the browser
expands them to 3.9 MB when downloading; painfully big,
and not as we will ultimately leave them:
Page 1.
Page 2.
Download the PostScript version for printing, not these.
For introduction of the tall dome (screws and tightening torques)
please refer to 3/23/99-entry of:
SCIGN/USGS
Web page.
- Overall adaptor, antenna, and dome assembly drawing:
GIF format (12 kB)
PostScript format (93 kB)
- Main reference height drawing, for ``fixed height'' D3 adaptor:
GIF format (14 kB)
PostScript format (77 kB)
- Eccentric reference mark, for restoring adaptor to
it's original location should the adaptor be removed:
GIF format (14 kB)
PostScript format (72 kB)
- Assembled D3 antenna-adaptor drawing:
GIF format (48 kB)
PostScript format (63 kB)
- A Thread converter, to permit the introduction of the D3 adaptor
(and Tall, SCIGN radome) onto an existing 5/8"-11 standard antenna
thread:
GIF format (11 kB)
PostScript format (28 kB)
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