Bird - The RF Experts
42-57-01 Series
42-83A-01 Series, 746-901 MHz, Receiver Multicouplers
42-57-01 Series

42-57-01 Series, 380-512 MHz, Receiver Multicouplers provide unequalled performance in a 1-rack unit (1-3/4 inch) space-saving package. The high performance LNA ’s exhibit a very low noise figure while providing a (100% measured) 3rd order output intercept point in excess of +40 dBm. The multicouplers are designed with a minimum excess gain of 10 dB which gives maximum sensitivity in rural applications. All the units are designed for ease of expansion, with no change in system gain in most cases. Three basic models cover the most popular applications from 118 - 901 MHz.

Consult our comprehensive RF component and accessories catalog for Receiver Multicoupler Systems components such as LNA’s and power dividers for special needs you may have. All Bird Receiver Multicouplers are easily expandable by either adding additional power dividers to the existing chassis or by addition of a 1-rack unit deck. The 16-channel Bnc models have 2 terminated BNC connectors for non-invasive expansion of up to 16 additional outputs in 8-output blocks, with no change in performance or specifications. All necessary cables with attached connectors are included in each kit.

  • Space-saving, 19” 1 RU rack mount design
  • Designed and manufactured high-performance LNA
  • Auto-Ranging AC Power, 85-264 VAC 50/60 Hz / 22-30 VDC
42-57-01 Series Receiver Multicoupler
Model Number Number of Channels System Gain (Typical) * Connectors (In/Out)
42-57-01-04N 4 12 dB N / N
42-57-01-08N 8 15 dB N / N
42-57-01-12N 12 15 dB N / N
42-57-01-08 8 13 dB N / BNC
42-57-01 16 12 dB N / BNC

* Attenuator pads are provided to reduce system gain for performance optimization.

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42-83A-01 Series, 746-901 MHz, Receiver Multicouplers
42-57-01 Series
product specifications:
Item No
42-57-01 Series
Item Name
380-512 MHz, Receiver Multicouplers
Channel Capacity
See Model Matrix
Tuned Bandwidth
380-512 MHz
System Gain
See Model Matrix
Preamp Noise Figure
2.2 dB
Preamp 3rd Order Intercept Point
41 dBm
Power Requirements
85-264 VAC, 47-63 Hz
DC Backup
22-30 Volts
See Model Matrix
Dimensions H x W x D
1.75" x 19" x 14"
(44.5 x 482.6 x 355.6 mm)
Temperature Range
0 - 50°C
75 Series
100-1000 MHz, Expansion Kits