Note: always used as a set in conjunction with a Masthead Amplifier
USES of Proception 2 Way Power Unit
Used in conjuction with a Masthead Amplifier to add gain to a VHF Aerial and/or a UHF aerial
Used in Poor reception areas where the aerials need to be amplified in order to achieve a clear picture due to:
Long distance from the transmitter
Interference caused by an obstruction e.g. (hill)
ADVANTAGES of Proception 2 Way Power Unit
Depending on the Masthead Amplifier it is used it can help achieve a 25dB gain
Can transform a hazy picture into a clear picture
It's Universal ie. the same power unit can be used with a range of Masthead Amplifiers and Aerials
Can be used with power passing splitters to feed a number of rooms
Reliable robust unit with high quality low loss f-type connections
Can feed 2 televison without the need to use a splitter
More effective than a using a distribution system
DISADVANTAGES of Proception 2 Way Power Unit
Higher insertion Loss and more expensive than a 1 way power unit
A resaonably high level of experience is required to know how and more importantly when to use a power unit and a masthead amplifer
If used incorrectly or if there is a large amount of background interference a power unit and a Masthead amplifer can actually make matters worse - particularly in a strong reception area.
Can be a victim of new broadcasts e.g. the new garda radio system can cause chaos with amplified aerials
Summary: A Power unit and UHF masthead amplifier are used to pass a 12v signal directly to a UHF aerial. The amplified aerial is capable of 'Pulling' in far more signal than a simple unpowered Aerial. There are various types of power units and UHF masthead amplifiers but they all work in basically the same way i.e. a single wire from the power unit feeds the masthead amplifier, which feeds the UHF aerial. For the purpose of this example, it is assumed the UHF aerial is to be mounted on a pole outdoors and the power unit is to be mounted in the main TV room.
Tools Needed
Snips
Screwdriver
Equiment needed
Powerunit(qty: 1)
UHF aerial (qty: 1)
VHF aerial (qty: 1)
VHF/UHF masthead amplifier (qty: 1)
'F'-Connector (qty: 2-10)
Satellite cable
Step 1 - Assemble the VHF/UHF Masthead Amplifier
Take an assembled UHF and an assembled VHF aerial
Cut the satellite cable coming from each aerial so that it is long other. Estimate enough to allow the aerials to be mounted on a pole without the aerials touching each other. Estimated length is 1.2-1.5m long. Note: mounting the amplifier any closer to the aerial can cause interference problems
Pear down the end of each of the aerial cables and the ouput cable
Put an 'F' type connector on the 2 aerial cables and the output cable
Click open the cover on the VHF/UHF masthead amplifier
Use the f-connectors to screw the UHF and VHF cables to the 'UHF' and 'BIII' inputs on the base of the amplifier.
Similiarly connect the ouptut cable to the 'OUT/SORTIE' port
A flathead screwdriver can be used at a later stage to adjust the gain on both the VHF and UHF legs.
Leave the output cable long enough to reach the RG6 cables that are feeding the power unit and the various TV points in the house
Step 2 - Connect the Power Unit
Step 3 - Connect the Power Unit and Masthead amplifier
In the Attic put an f-type connector on the cable from the power unit and from the Masthead amplier
Join the cables with an F-type Joiner.
If the aerial is to be run to several rooms install a power passing splitter in the attic