Labgear LABGT18A User Manual

18 Element High Gain Group A Yagi Aerial

Lte

800

LABGT18A

USER GUIDE

Congratulations on the purchase of your LABGT18A aerial. The aerial is designed to get the best reception
from group A transmitters and receives signals between 470 and 606MHz. The high gain performance makes
it ideal for reception in fringe areas.

Features include:

• 15.0dBi Gain

• F type connector for secure and easy connection

• Fast simple assembly

• Compact pack for easy transportation

Installation Instructions

For optimum results install the aerial using double screened CAI benchmarked digital coax cable
and screened coax outlets. You will need to t the coax cable with the F type connector
supplied to connect to the downlead (not supplied) to the F socket on the aerial.

1. Prepare the Coax Cable: First fit the rubber weather boot provided, to the aerial end of
the cable. Strip the end of the cable as shown in Fig. 1. Once you have stripped the
cable, twist the braid and pull it back on itself, make sure that no braid is touching
the copper core, this will cause a short on the cable and you will not get any signal.

2. Fitting the F connector: Now, simply twist on the ‘F’ connector supplied and trim
the central conductor.

For best results the aerial should be mounted on an outdoor aerial mast and pointed
in the direction of the nearest transmitter* making sure it is in a position where the
transmitter signal will not be obstructed by nearby trees and buildings. If you are in
any doubt about the direction in which the aerial should be pointing or the
orientation of the aerial (horizontal for main transmitter, vertical for relay transmitter)
check your neighbours’ aerials.

The aerial requires some assembly.
If mounting on an existing mast check that the mast is in good condition and rmly xed.

Fig. 1

Fig. 2

screw connector
body onto cable

cut or tear
away foil

fold braid back
over sheath

6.5mm

READY

8mm

inner
wire

end of insulation
should be flush
with this face

2mm approx.

Aerial assembly

5. The central boom comes in two sections
using the bracket supplied and the holes
drilled in the boom sections join these two
sections as shown in Fig. 3.

Fitting the reflectors

7. Slide the reectors into the sockets
mounted on the central boom until
they click into place as shown in Fig. 4.

Fig. 5

Fig. 3

reflector
element

Fig. 4

reflector boom
assembly

6. Attach centre mount bracket in the
position shown in Fig. 5. using the
clips supplied.

centre
bracket
clamps

centre
bracket

4. Fit the mast clamp attached to the aerial centre bracket onto the mast.
Then slide the centre bracket through the mast clamp to find the most
evenly balanced position. Make sure the aerial is pointing in the direction
of the nearest TV transmitter then tighten the wing nuts until the aerial is
securely fixed into position, see Fig. 6.

5.

Connect the aerial downlead to the ‘F’ socket on the
underside of the balun (be careful not to over tighten
the

F connector) see Fig. 6.

Fig. 6

6. Slide the weather boot over the ‘F’ connector
and socket to make a good seal - see Fig. 6.

7. Make sure that the downlead is routed as shown in Fig.6
making sure the lead doesn’t touch the reector.
Use insulating tape, to secure the coax downlead to
the mast.

8.

Finally connect the aerial to your TV/set top box
and check the picture. Fine adjust the direction
of the aerial to obtain the optimum signal reception.

Troubleshooting

No picture:
Check all connections from aerial to TV.

Poor picture:
Check all connections from aerial to TV.
Check aerial is properly aligned to the correct transmitter.
If the aerial has been loft mounted try mounting outside.

F Connector

Weather
Boot

Insulating
Tape

If in a very weak signal area or for long cable runs,
installing a masthead amplifier will improve the signal.

If in a strong signal area the signal strength may need to be
reduced by fitting an attenuator.

Make sure new digital coax cable has been used
throughout the installation.

Check the transmitter signal is not obstructed by nearby trees
or buildings.

Troubleshooting

Frequency Range MHz 470-606
TV Channels 21-37
Forward Gain dBd 12.8
Forward Gain dBi 15.0
Front/Back Ratio dB >15.0
Beam Width +/-deg. +/-18°
PCB Balun Yes
Connector F-Type
Length 1285mm
Width 345mm
Height 325mm

Caution

When mounting the assembled aerial, always observe safety
precautions and use the correct equipment.
Unless you are competent in the use of ladders and other
access equipment, do not work outdoors at roof height.
If in any doubt, refer to a qualied aerial installer.

Useful Websites for Digital Advice:

*To nd out which DTT channels should be available locally and
to nd out where your nearest transmitter is visit:

http://www.digitaluk.co.uk/coveragechecker/

and enter postcode, house number if you also check the detailed
view box you will see a list of transmitter’s with distances and
compass bearings.

For further information, please contact:

Customer careline: 08457 573479 (
Technical Support: www.philex.com/support/

Waste electrical products should not be disposed of with
household waste. Please recycle where facilities exist.
Check with your Local Authority for recycling advice.

Local Rate - UK Only )

© Philex Electronic Ltd. 2014. v1