DataPage Lite Desktop UHF Radio Paging System
DPUKLITE 6 Issue 2
Performance
The system will normally cover 95% of all range requirements with the use of just the internal antenna. The
helical quarter wave antenna supplied with the system can provide ranges of up to half a mile free space and
will normally cover industrial buildings of considerable size. This short helical wound antenna can be replaced
with a straight quarter wave which can provide ranges in excess of one mile in free space and considerably
enhance the units performance in industrial or commercial environments. Position the unit on the opposite end
of the desk to computers, telephones and intercoms etc. to minimize the potential for cross interference.
Also, remember that the capability of your system will be affected by:-
Foil backed wallboard, metal mesh, wire reinforced glass, metal sheeting, large mirrors, suspended ceilings, lift
shafts etc. These can all reflect and thereby reduce the signaling capability of the transmitter. A little forethought
prior to installation, coupled with a few tests, can normally avoid most of these problems.
Other Aerials
The range and performance of this equipment can be improved by the addition of more efficient aerials*. These
can be installed either inside or outside the building and are connected to the transmitter with 50 ohm coaxial
cable. An amplifier is also available for very large sites*. Consult your dealer for further details.
A glass mount is available to install on the inside of a suitable window which can boost range, especially if its
required in one direction from the building.
The center fed half wave dipole measuring approximately 300 mm from tip to tip, will provide excellent all round
local signaling. This can be mounted either inside or outside the building and is available in either a light weight
or heavy duty stainless steel design.
*Subject to license conditions.
Collinear aerials are also available for external application and will, when elevated, boost overall range with a
slight loss to some local signals.
Pre-terminated coaxial feeders are available for 5, 10 or 15 metre requirements. High frequencies can equate
to high power losses. Always use the best quality cable. RG58 is only acceptable on cable runs of up to 5
meters. We recommend RG213 or equivalent on greater lengths. If in doubt consult your dealer. Coaxial cable
intended for TV satellite or CCTV installations is normally 75 ohm and therefore totally unsuitable and can cause
severe transmitter damage.
Program Parameters
The standard models are factory pre-set and should not under any circumstances be adjusted by the customer.
The factory settings can be viewed for the purposes of verification when ordering additional components etc.
The system parameters are protected from accidental change by password control. To enter the system type:
( 72765 then press ENTER
*USER OPTIONS*
1: Setup 2: Range
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