Addressable Class B Bi-Directional Amplifiers

NF-BDA400-1B, NF-BDA400-2B, NF-BDA150-1B, NF-BDA800-1B, NF-BDA700-1B, NF-BDA7800-2B

The NOTIFIER Addressable Class B BDAs are signal boosters for In-Building 2-way Emergency Radio Communication Enhancement with built-in NOTIFIER Fire Alarm Panel Addressable Monitor Module.

NOTIFIER Addressable Class B Bi-Directional Amplifiers (BDA) are high gain, high power band-selective signal boosters/bi-directional amplifiers that can integrate directly to a NOTIFIER fire alarm control panel with a built-in NOTIFIER addressable monitor module. Designed and customized to meet all public safety frequency band ranges, it is intended to provide reliable two-way radio signal coverage inside buildings, tunnels and other structures. The band selective design delivers a reliable performance in even the most challenging RF environments.

Features & Benefits:

  • Single portfolio to meet any application across US supporting all public safety frequency bands
  • UL2524 In-building 2-Way Emergency Radio Communication Enhancement Systems listing
  • CSFM listing
  • NFPA 72 2010 Edition, NFPA 1221 2016 Edition and IFC 2018 compliant
  • Built-In NOTIFIER Addressable Monitor Module
  • Various models available for UHF, VHF,700MHz, 800 MHz and multi-band
  • Integrated dual power supply and battery charger with intelligent battery monitoring
  • NEMA 4 Type (UL Type-4) Approved Equipment Enclosure
  • NEMA 3R Type (UL Type-3R) Approved Battery Enclosure
  • Supports higher system gain for efficient link budgeting


Specification NF-BDA400-1B,
NF-BDA150-1B NF-BDA800-1B NF-BDA700-1B NF-BDA7800-2B
Frequency Range 450-490MHz UHF 150-174MHz VHF 806-815MHz Uplink
851-860MHz Downlink
793-805 MHz Uplink
763-775 MHz Downlink
793-815MHz Uplink
851-860MHz & 763-
775 MHz Downlink
Passband 100KHz -3MHz 1 - - - -
Maximum Bandwidth,
each band
3MHz - - - -
Maximum Gain
92dB max.
(90dB typ.)
92dB max.
(90dB typ.)
92dB (Typ) 92dB (Typ) 92dB (Typ)
Gain Adjustment, 1 dB
attenuator increments
50dB to 92dB = 42dB total adjustment range
Maximum Composite
Output Power (i.e. single carrier max. power)
Power Limiter
Adjustment, 1 dB
attenuator increments
32dBm to 18dBm 30dBm to 16dBm 30dBm to 16dBm 30dBm to 16dBm 28dBm to 14dBm
50 Ohm
Maximum RF Signal
Input Level for FCC
spurious limits
Absolute Maximum
Input RF Signal Level
0dBm continuous, +10dBm peak
Noise Figure <6.5db typ.8db=""> <6.5db typ.8db=""> <6.5db typ.8db=""> <6.5db typ.8db=""> <6.0db typ.7db="">
Trouble indications
Two Form C relays for each of the troubles:
AC Power Status, Charger Status, Low Battery Capacity, BDA Trouble, Antenna Trouble and Aux Alarm. Second relay
contact set provided for a LED annunciator panel.
Event Logger
Standard SD Card up to 16GB. Mini SD with adaptor. Real- time clock time stamp included.
AC Power Supply
Two independent power supplies with 110-240VAC/2.1A 50/60Hz each
Power Supply
91% (Typ.)
DC Power Supply
Requires two (2) 75Ah 12V AGM Sealed L.A. batteries in series for Secondary power. Maximum Current Draw: 2.5A @24VDC
Run Time with standard
2x75Ah 60% de-rated
Battery Backup
24 Hours under full load
Battery Charging with
the Built-in Charger2
Charging Current Limited to 5A max
Operating Temperature3
-4°F to +77°F (-20°C to + 25°C)
FCC Certifications
FCC Title 47 Part 90, FCC Title 47 Part 15b
Multiple channels can be combined within the 3MHZ duplexer band-pass. Multiple bands can be combined in the same enclosure. Other channel bandwidths may be available, please inquire with your specific requirements.
Only use approved lead-acid batteries supplied by NOTIFIER along with the Signal Booster.
This system meets NFPA requirements for operation at -20 to 25º C / -4 to 77º F and at a relative humidity. However, the useful life of the system's standby batteries and the electronic components may be adversely affected by extreme temperature ranges and humidity. Therefore, it is recommended that this system and its peripherals be installed in an environment with a normal room temperature of 15-25º C/60-77º F.

Codes and Listings:

  • UL2524
  • CSFM
  • NFPA 72 2010 Edition
  • NFPA 1221 2016 Edition
  • IFC 2018
  • FCC Certifications: FCC Title 47 Part 90, FCC Title 47 Part 15b


Basket Size :
0 MB out of 50 MB

Document Name Asset Type Type & Size Modified Date
Articles pdf | 0.10 MB 10/18/2019
Brochures pdf | 1.50 MB 02/11/2021
Case Studies pdf | 0.17 MB 08/05/2019
Case Studies pdf | 0.15 MB 06/21/2019
Data Sheets pdf | 0.28 MB 06/10/2019
Engineering Specs docx | 0.03 MB 12/21/2018
Engineering Specs docx | 0.03 MB 12/21/2018
Engineering Specs docx | 0.03 MB 10/22/2018
Engineering Specs docx | 0.03 MB 10/22/2018
References pdf | 0.12 MB 02/11/2021
References pdf | 0.19 MB 04/01/2020
Sell Sheet pdf | 0.96 MB 04/24/2019

Media & Visuals



BDA Webinar ERCES - Bi-Directional Amplifier (BDA) Systems