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Try to avoid placing the antenna in a location where it can be flooded. If this is
unavoidable, then place it where the risk is at its minimum.
For equipment that is installed in a chamber below ground level, the antenna should be
placed above ground level if possible. Where this is not possible, position it near to the
top of the chamber.
Some general advice is given below:
Monopole Antenna
For most installations, a monopole antenna will give acceptable performance.
Installation Considerations:
• Always comply with any installation restrictions as per warnings in the
documentation supplied.
• The antenna has a magnetic base to be used for mounting.
For optimum performance, the antenna requires a “ground plane” (metal
surface) at its base.
• When installing the antenna in large underground chambers it should be
positioned close to the surface.
• Ensure that any chamber lid will not interfere with the antenna or cables
when being opened/closed.
• This antenna is vertically polarised, it should always be installed in the
vertical orientation.
• Never bend the radiating element of the antenna.
• The antenna can also be attached to an installation bracket mounted to an
existing marker post.
• Where an antenna is held in place by magnets, ensure the weight of any cables
does not excessively load the magnet so as to detach it from the installed
location.
• Do not allow any equipment to rest on the antenna connector as crush damage
to the connector or antenna cable can result.
For other antenna options and additional installation guidelines, refer to the documents
available on the support webpage: https://www.hwmglobal.com/antennas-support/
4.25.2 Antenna / Communication checks
IDT should be used to check that the logger can connect to the cellular network and that
the antenna is in the optimal position for the site.
• Choose a suitable antenna for the installation and decide on its initial position.
• Determine the network technology being used (i.e. 2G, 3G, 4G, etc) and then use
the appropriate signal quality limits (refer to the IDT user-guide).
(Details can be found in MODEM settings, which is a specialist subject.
However, it is not necessary to inspect or modify these in most situations.
During ‘signal tests’ IDT will provide additional information that can determine
which guidelines tables to use for judgement of signal suitability.
(CSQ value for 2G and 3G networks. RSRP and RSRQ values for 4G networks).
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