Symmetricom TimeSource 3600, Manual

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Engineering & Ordering
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The minimum horizontal distance from other receiving antennas is
1 meter.
To reduce multipath signal distortions, the minimum horizontal
distance from vertical reflective structures (e.g., heating ducts,
equipment housings, etc.) is twice the height of the structure, and
no less than 3 meters (Figure 10).
Do not locate the antenna underneath high power lines. If this
cannot be avoided, ensure the antenna is placed at least twice as
far from the power line as the power line is high (to avoid danger
to personnel and multipath effects).
Cables must be run as straight as possible. All cables should be
routed in accordance with local company practices.
Note:
Keep all impedances as low as possible. All cables should be
routed in accordance with local company practices.
Observe the following guidelines during the placement and
installation of the cables:
• Route cables as straight as possible (bends in the cable
increase impedance at lightning frequencies), in accordance
with local company practices.
• Any opening where conduit enters the building must be
waterproofed per local company practices.
• Treat all exposed connections with an electrically conductive
anti-corrosion compound (Kopr-Shield or equivalent).
Warning:
Avoid small-radius turns and unnecessary turns.