Lectrosonics UHF Filter/Amplifier Module (Block 25-26)

Lectrosonics UHF Filter/Amplifier Module (Block 25-26)

Lectrosonics UHF Filter/Amplifier Module (Block 25-26)

B&H # LEUFM502526 MFR # UFM50-2526
Lectrosonics UHF Filter/Amplifier Module (Block 25-26)

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  • 1Description

The Lectrosonics UHF Filter/Amplifier Module (Block 25-26) provides a unique, high performance solution for antenna systems requiring long cable runs or distribution to multiple receivers or locations. The unit can be used to apply RF gain at the antenna ahead of a long run of coaxial cable to compensate for signal loss through the cable. A compact, high performance multicoupler can also be configured using the UFM50 ahead of an RF splitter to offset the loss through the splitter.

The UFM50 design places RF filtering before gain to minimize intermodulation (IM) products and prevent overload. Two transmission line ceramic resonators at the input provide filtering with a 50 MHz bandwidth. Following the filters, 12dB of gain is applied with a high quality GasFET RF amplifier with an excellent +41dBm IP3. The result is outstanding RF performance without IM or overload problems.

A switching regulator is used in the power supply to control current consumption over an input voltage range of 8-16 volts. The regulator maintains low current consumption and low heat dissipation which is especially useful in portable audio mixing common in field production and ENG.

The UFM50 can be powered from external DC or via phantom power through a coaxial cable connected to a multicoupler. The housing is constructed of cast aluminum with a brushed aluminum cover plate. Two rugged BNC connectors and a threaded, locking power jack provide secure connections for rugged field conditions and for long-term installations.

RF filtering before gain
50 MHz passband on center frequencies from 560 to 865 MHz
Ceramic resonator filters
GasFET RF amplifier
+41dBm 3rd order intercept
Switching regulator for 8-16V power at constant power dissipation to minimize heat at high voltage
Jumperable attenuators for +5dB, +8dB and +12dB total gain
Cast aluminum housing
External power or phantom power at output jack from UMC16A multicoupler
In the Box
Lectrosonics UHF Filter/Amplifier Module (Block 25-26)
  • 6' DC Locking Style Mating Connector Assembly for Powering
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description
    Third Order Intercept +27 dBm @ input (+41 dBm output)
    Inputs RF in: BNC
    DC in: 2.1 mm locking power jack
    Output RF out: BNC (and phantom power in)
    Range Block 25-26
    Bandwidth Filter: 50 MHz, factory set
    Gain RF: +12 dB with 0 dB attenuator
    +8 dB with 4 dB attenuator
    +5 dB with 7 dB attenuator
    Power Requirements 8 V DC (130 mA) up to 16 volts DC (70 mA) at the DC input jack, auto reset circuit breaker
    Phantom Power DC voltage supplied by UMC16A BNC input jack or BIAS-T power inserter
    Power Consumption 1.075 W nominal (switching regulator)
    Compliance CE EN55022 and EN50082-1:1998
    Dimensions 2.26 x 1.39 x 1.14" (5.74 x 3.53 x 2.9 cm) (not including BNCs)
    Weight 3.3 oz (93.55 g)
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