Stanwell Park Tunnel REF - Transport for NSW - NSW Government

• The hinged mast can be installed using a hinge mechanism, which removes the need for
large cranes.
• The installation of a walk-in equipment hut would use more space and be more expensive.
The use of outdoor cabinets was the most suitable solution given the limited space, cost
and minimisation of environmental impacts.
Alternative sites further north and further south were examined but were rejected due to the
following reasons:
• Installing poles/masts further north or south would create a gap in coverage to the leaky
feeders within the tunnel portal.
3.6 Justification of the Preferred Option
It was decided to construct a DBS approximately 360 metres west of Stanwell Park station
using GSM-R technology because it will enable the site to be consistent with the whole DTRS
network. Consistent technology choice will enable TfNSW to improve its existing quality of
service, reliability and emergency responsiveness.
The Stanwell Park Tunnel Location 1 site was selected due to its ability to cover the section of
track between the east end portal of Stanwell Park Tunnel to Stanwell Park and Location 2 was
selected for its ability to cover the section of track between the west end portal of the tunnel to
Tree Tops. The proposed antenna height of 10 metres at Location 1 and nine metres at
Location 2 is the minimum height required to provide optimum radio frequency coverage for
these sections of track.
The proposed site has good construction and maintenance access. The proposed work will not
require the removal of native vegetation.
In summary, a higher pole, or an additional DTRS facility would be required if the site was to be
relocated. It was decided that the preferred option would offer the least impact on the local
environment while still meeting operational requirements.
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