Have
you considered a member of the Antenna Technicians Association?
To professionally install or
repair your television antenna system?
The
member will, prior to the start of the installation carry out a
FIELD
STRENGTH SURVEY
With
the aid of a field strength meter (not a portable television).
This
will determine the following:
•
Location of the antenna (the existing antenna mast/position may
not be the best location)
•
Height and direction of the antenna on the mast
•
Type of antenna required (combination, phased array, yagi and
channels to be received)
•
Available signal strength (a
TV requires
45 dB
for good digital
picture, analogue 60-75dB for clear picture)
•
This allows the technician to determine if an amplifier
is required, what type (masthead or distribution) and the level of gain. signal
strength less
than 45dB
means
digital picture
drops out, freezes or pixilates.Analogue 50dB
ATA
MEMBERS USE:
•
The Technical Standards as laid down„by the Antenna Technicians
Association Inc.
•
Isolated wall outlets or sockets. This helps to prevent possible
electrocution from faulty televisions. (Outlets connected to low voltage
line powered equipment may prevent this)
•
RG 6 / 11 quad screened coaxial cable. (Single screen air
spaced cable has greater signal loss at higher frequencies‑UHF,
with less resistance to electrical and other interference)
You may also request the technician to demonstrate to you, the expected
picture quality on a test television prior to giving your approval for
the installation. On completion, the ATA member will record the signal
strength of each individual channel and the picture quality on your
invoice.
Whilst members will guarantee their own workmanship and materials used
for a specific period, no guarantee can be made or given regarding the
reception quality. There are several external factors beyond the control
of the technician, which can and do affect the quality of the finished
installation, some of which include, but are not limited to the following;
•
distance signal must travel (from point of transmission)
•
objects in the signal path (trees, buildings, hills)
•
seasonal changes (co channel interference, deciduous trees, sunspot
activity)
•
atmospheric conditions
•
signal reflections (analogue ghosting,
digital pixilates)
•
quality of the signal source (relay translator)
•
external interference (power line, radio transmitter,
domestic appliances, etc)
Remember!
We are the
specialists in our
field!
9439 8717 All Hrs. Mobile
0409 319 385 Fax 9431 0758
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