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10.4
Radio coverage survey
Eltek have provided an online tutorial which illustrates how to perform a radio
coverage survey. Please visit www.eltekdatareceivers.co.uk/surveytutorial.
Overview
Typically a system will consist of transmitters distributed across various floors
and rooms of a building reporting to an RC250 receiver. Range can be
extended by means of repeaters that provide both tandem and/or radial
coverage patterns.
Systems can be linked by repeater links, enabling communications across
roadways or car parks.
Use of an external antenna on the receiver, repeater or individual transmitters
can be used to optimise range.
Locating the Receiver
Before the location of the transmitters and repeaters can be considered, it is
very important to find a suitable location for the RC250 Receiver in the site.
Care should be exercised in positioning the RC250 Receiver.
Try to site the Receiver at least 5 metres away from the PC so that interference
is minimised:
>5m
If the Receiver is connected directly to the PC, an RS232 extension lead may be
required (RS232/5M for 5m). Alternatively, use an external antenna on the
Receiver if installation permits:
