UHF Masthead Amplifiers PUI111 9dB screened Masthead UHF Only PUM11116dB screened Masthead UHF Only PUH111 26dB screened Masthead UHF Only PUM141 10dB 4-way screened Masthead UHF Only power any port.

Labgear Screened Masthead Range These preamplifiers are available in four versions 9 dB, 16 dB, 26 dB and a 4-way 10 dB. They are fully screened and come with type-f (female) connectors. They combine good input filtering with a very low noise figure, which makes them ideal for amplifying Digital (DTT) signals.

• Easy to Install • Fully Screened diecast housing • Type –f connectors • Can be incorporated into a system Headend • Mast fixing or wall mounted • Earth Bonding Terminal excepts 4mm 2 CPC to comply with EN5.83-1 • 4-way amplifier (PUM141) can be powered via any of its outputs

PUI and PUM111 Use these PUM models to improve signal strength and C/N in domestic and MATV system applications with normal length downlead cables. These amplifiers are ideal for use in DTT installations where it will enable the minimum recommended signal level (45dBμV) to be delivered to the tuner and reduce the likelihood of impulse interference problems. PUH111 Use the PUH111 in situations where more gain is required. Examples are very long cable runs. PUM141 The PUM141 provides a fully DTT compatible solution for feeding several TV points from one antenna. The wiring can be mainly on the outside of the building, making this is a popular solution for retro-fit on older buildings. This can be powered from any output, allowing flexibility in the power unit location. PSM114 The PSM114 is the recommended power supply, it is a 100 mA power unit with short circuit protection and it has a Fault indication LED which changes from Green to Red.

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Technical Data

Part Number PUI111 PUM111 PUH111 PUM141 Operating frequency range MHz 470-862 470-862 470-862 470-862 Number of Outputs 1 1 1 4 Gain <2dB flatness 9dB 16dB 26dB 10dB Noise Figure >2dB >2dB >2.2dB >2.7dB Input return Loss 9dB 9dB 9dB 9dB Max input level 76 dBμV 75 dBμV 75 dBμV 75 dBμV Max output level 85 dBμV 92 dBμV 101 dBμV 85 dBμV Output return Loss >14dB >14dB >14dB >16dB Output Capability 88 dBμV 94 dBμV 103 dBμV 88 dBμV Isolation between ports - - - >30dB Power requirements 12v 25mA 12v 25mA 12v 40mA 12v 40mA Through Line power NO NO NO NO EMC compliance EN50083-2 Connectors IEC60169-24 (type-F) Operating temperature range -10.. + 40°C

Notes:

1. All gain figures apply between the relevant input and each relevant output(s). 2. Typical minimum filter rejection dc – 400MHz 3. For 5 (max) analogue TV signals plus 6 DVB-T multiplexes at<14 dB relative level

2 –Year Guarantee Your product is guaranteed against faulty componenets or poor workmanship for a period of two years From the date of purchase. This guarantee does not cover accidental or mallcoius damage (Including damage from natural causes such as lightening) and will be invalidated by installation or use other than in accordance with these instructions, repair or attempted repair other than by the manufacturer, or open or removal of the case. This does affect your statutory rights.

Labgear Reserve the right to modify their designs or specifications, In the light of future developments, without prior notice.Performance figures quoted are typical and subject to normal manufacturing and service tolerances

Labgear, Kingfisher Wharf, London Road, Bedford, MK42 0NX, Tel: 01234 263737

Waste electrical and electronic products must not be disposed of with in household waste. Please recycle where facilities exist. Check with your local Authority or Retailer for recycling advice.

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All Labgear masthead amplifiers are compatible with the PSM114 or Labgear launch amplifiers CM7281, CM7281 and LA310. Notes All four amplifiers have a maximum input capability of around 75dBμV (for 5 analogue TV channels with 6 lower-level DTT multiplexes). If the signal level from the antenna exceed this figure it is unlikely that a preamplifier would be required. Masthead preamplifiers should never be used as a substitute for an adequate antenna, although they can reduce the antenna size required in many cases. A preamplifier will not cure problems caused be co-channel interference or multi-path propagation (ghosting), both of which may point to the need for a more directional antenna.

Fixing methods Mount the amplifier on a vertical section of the mast below the antenna using the cable tie provided-fig 4 The amplifier will not be affected by proximity to the antenna, but reasonable clearance – about 300mm- should be maintained to avoid disturbing the antennas performance. Alternatively, the amplifier can be mounted be methods in figs 5 & 6. Signal connections Type-f connectors provide a reliable low-cost method of connection with excellent screening integrity and impedance match. Select the appropriate male connectors to fit the cable type used, from ‘0.63’ to ‘233’. This method of connection is superior in all respects to saddle-and-clamp types that it replaces. Good quality coaxial cable to EN50117-2 should be used, ideally to be used in conjunction with high quality crimp on connectors. Connectors should be properly fitted in accordance to manufacturer’s instructions, using the correct crimp tool. F connectors should always be tightened with a spanner. Leaving it finger tight may result in unwanted signal ingress or leakage, as well as suck-outs in the frequency response. System Earth Bonding Earth bonding terminals are provided on the amplifier casting for the use where necessary to comply with BS EN 50083-1

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