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BSRF

FA-1 Filtered amplifier

Wireless Antennas

Filtered RF amplifier, selectable gain up to +12dB, interference filtering, fail-safe bypass mode, DC-feed powered, coax loss compensation

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Description

The BSRF FA-1 Filtered Amplifier is a compact inline RF amplifier designed to improve wireless system performance in environments affected by interference and signal loss. By combining advanced filtering and amplification in a single device, it helps protect wireless receivers from unwanted RF noise while compensating for losses introduced by long coaxial cable runs. Ideal for professional audio, broadcast, live event, and wireless monitoring applications, the FA-1 is engineered to maximize signal integrity and system reliability. 

A key feature of the FA-1 is its filtering-before-amplification architecture, which reduces out-of-band interference from sources such as walkie-talkies, DECT systems, Wi-Fi networks, cellular communications, and intercom systems before signal gain is applied. Selectable amplification levels allow users to optimize system performance for different installation requirements, while the high-linearity amplifier design helps maintain clean signal handling. Available in multiple frequency ranges as well as custom configurations, the FA-1 can be tailored to suit a wide variety of wireless microphone and RF distribution systems. 

Designed with flexibility and reliability in mind, the FA-1 includes a fail-safe bypass mode that continues to pass signals through its filter even when external power is unavailable. Powered via DC feed through compatible antenna splitters or receivers, it also supports DC pass-through for specialized system configurations. Housed in a durable machined aluminum enclosure, the FA-1 provides a professional solution for users seeking cleaner RF performance, improved signal coverage, and enhanced wireless system stability. 

Features

Filtered RF Amplifier
Designed to improve RF signal quality while reducing interference in professional wireless audio systems.

Integrated RF Filtering
Filters unwanted RF interference before amplification for cleaner and more reliable signal reception.

Enhanced Wireless Performance
Helps minimize interference from walkie-talkies, DECT systems, Wi-Fi networks, cellular signals, and intercom systems.

Selectable Gain Levels
Offers multiple gain settings to compensate for signal loss in coaxial cable runs.

Bypass Mode
Can operate as a passive filter without signal amplification when required.

Fail-Safe Operation
Continues functioning as a filter even when power is unavailable, ensuring uninterrupted signal flow.

High Linearity Design
Maintains signal integrity while amplifying RF signals for professional wireless applications.

DC Feed Powered
Receives power through the coaxial cable from compatible antenna splitters or receivers.

DC Pass-Through Support
Allows power to pass through the unit for flexible system integration and installation options.

Compatible with Passive & Active Antennas
Works seamlessly with a variety of antenna configurations.

Multiple Frequency Band Options
Available in several frequency ranges to suit different wireless system requirements.

Custom Filter Availability
Can be configured with custom filtering options for specialized applications.

Compact Inline Design
Installs easily within RF signal paths without adding significant bulk to the system.

Professional Wireless Solution
Ideal for improving RF performance and reliability in demanding broadcast, production, and live sound environments.

Durable Aluminum Construction
Manufactured from machined aluminum for durability and long-term professional use.

Specifications

General Specifications
Device Type: Filtered Inline RF Amplifier
Fail-Safe Operation: Yes
Construction Material: Machined Aluminum
Power Method: Coaxial DC Feed
DC Pass-Through: Yes

RF Performance
Amplification Steps: 4
Selectable Gain: 0 dB, +6 dB, +9 dB, +12 dB
Bypass Mode: Yes
Gain with DC Feed: 0 dB to +12 dB
Gain without DC Feed: -2 dB Typical (Filter Dependent)
High Linearity Amplifier: Yes
Pre-Amplification Filtering: Yes
Out-of-Band Interference Reduction: Yes

Frequency Bands
Band 1: 470–520 MHz
Band 2: 520–570 MHz
Band 3: 570–620 MHz

Custom Frequency Band: Available
Custom Filter Bandwidths: 20 MHz, 35 MHz, 60 MHz, 120 MHz

Power Specifications
Operating Voltage: 10–18 V DC
Maximum DC Feed Current: 200 mA
Typical Power Consumption: 10–18 V / 100 mA

Connectivity
RF Input Connector: BNC
Optional RF Input Connector: N-Type
RF Output Connector: BNC
Optional RF Output Connector: N-Type
RF Impedance: 50 Ohms

Compatibility
Passive Antennas: Compatible
Active Antennas: Compatible
Antenna Splitters with DC Feed: Compatible
Rackmount Receivers with DC Feed: Compatible
IEM Systems: Compatible
Amplifier Output Filtering: Up to 1 W

Fail-Safe Features
Passive Filter Operation without Power: Yes
Automatic Bypass when Unpowered: Yes

Physical Specifications
Length: 94 mm
Width: 20 mm
Height: 24 mm
Weight: 100 g

Construction Features
Small Cavity Filter: Yes
Machined Aluminum Housing: Yes
Recyclable Material: Yes

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