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DESCRIPTION of UHF Masthead Amplifier
- UHF High Gain Masthead TV Amplifier
- Gain: 27dB (Fixed Gain)
- Signal Range: 470-694MHz
- DC Requirement: 12Vdc ~ 50mA
- Inputs: 1
- Outputs: 1
- Indoor / Outdoor Use
- Connectors: F-Type Connectors
- Manufacturer: Blake
- Model: BLAMHD11H
- Digital Compatible: Yes
- Analogue Compatible: Yes
- RED, EMC & LVD Compliant
- CC 8543703000 0.19kg Y
Note: Always used as a set in conjunction with a power unit
USES of UHF Masthead Amplifier
- This unit is used in conjunction with a power unit and a UHF TV aerial to boost TV signal in poor reception areas
- A weak TV signal might be caused by factors such as...
- Long distance from the transmitter
- Interference caused by an obstruction eg.. (Hills, Mountains etc..)
- A low gain TV aerial is being used
- The filter screens inputs of <470MHz to prevent interference from CB, private mobile radio, tetra etc..
ADVANTAGES of UHF Masthead Amplifier
- Can achieve a 27dB gain which can transform a hazy picture into a clear picture.
- Reliable robust unit
- Low cost unit
- Generally more effective than a using a distribution system at improving signal quality
- Can be used in conjunction with a power passing splitter to feed TV signal to several TVs
DISADVANTAGES of UHF Masthead Amplifier
- Can only handle UHF signal, not VHF
- High gain can be a problem if there is a lot of background interference (Sometimes the medium gain is better)
- If used incorrectly or if there is a large amount of background interference, a power unit and a masthead amplifier can actually make matters worse, particularly in a strong reception area
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 un-powered TV aerial. There are various types of power units and UHF masthead amplifiers but they all work in basically the same way ie. a single wire from the power unit feeds the masthead amplifier, which feeds the UHF TV 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
Equipment needed
- Power unit (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 longer than needed. 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 output 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.
- Similarly connect the output cable to the 'OUT/SORTIE' port
- A flat head 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 amplifier
- 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
We aim to provide a fast, reliable & low cost delivery service
All orders we ship, leave our warehouse on time
- Standard Courier With Fastway (2-4 Working Days)
- Cost is €3.95 on Orders Below €100
- Free Delivery on Orders Above €100
- Express Courier (1-2 Working Days)
- With Fastway: Cost is €6.50 (or €2.50 extra if you qualify for free standard shipping)
- With DPD: Cost is €7 (or €3 extra if you qualify for free standard shipping)
- This service guarantees that any order placed before 4.30pm with Fastway or 3pm With DPD (Mon - Fri) will ship from our depot that same day on the express delivery service*
- *Orders placed after 4.30pm with Fastway or 3pm with DPD on Fridays & during weekends / bank holidays will be shipped the next working day
- An Post
- Cost is €2.50 (P & P)
- Available only on selected products with the An Post logo
- Small Parcels
- Cost is €3.50
- Available only on products with the small parcels logo**
- Great Britain
- Cost is €7.50
- Western Europe
- Cost is €10
- Belgium, France, Germany, Holland, Italy, Lithuania, Luxembourg, Spain, Portugal etc..
- Rest of Europe
- Cost is €20
- Croatia, Czech Republic, Estonia, Iceland, Malta, Slovenia, Switzerland, Norway, Sweden, Finland etc..
- Rest of World
- Cost is €30
- Please contact us before purchasing to confirm
Terms
- All shipping fee prices listed are ex-VAT @ 23%
- Irish shipping rates apply to the whole Island (North & South)
- Shipping fee is fixed for an order, regardless of the number of items bought
- All courier orders require signed proof of delivery and the customer must be contactable by phone
- We do not offer a weekend delivery service (Mon-Fri only excluding bank holidays)
- *Our courier achieves a 98% success rate on express deliveries
- ** Applies to island of Ireland only (North & South)
- Heavy or Large Parcels (Applies only to Non Irish or UK customers): It may be necessary to charge higher shipping fees / offer option to cancel order
