Bird - The RF Experts

Ethernet Directional Power Sensor Monitors

A powerful monitoring solution for smaller radio networks.

Maximize Up-Time

A powerful approach to antenna and power monitoring for smaller radio communications systems, and paging networks. Designed for smaller sites where the Bird 3141 Channel Power Monitor would be under-utilized, and connecting directly to the Internet or private IP network, they can be accessed remotely for both set-up and monitoring.

Bird’s 4043E Ethernet Directional Power Sensor Monitors provide reliable remote site monitoring to maximize uptime of mission critical communications. Unlike competitive solutions, 4043E RF Power Sensors can monitor for and alarm in the event of a reduced antenna VSWR. This provides an early warning of increased losses in the transmission line resulting from water ingress, damage, or deterioration.

Installed post-combiner, the 4043E RF Power Sensor Monitor can generate alarms according to pre-configured parameters for forward power and minimum/maximum VSWR, then communicated to users with SNMP traps. The 4043E provides composite power monitoring.

  • Frequency range includes 7 bands between 118 and 940 MHz
  • Provides composite power monitoring
  • Ethernet Interface
Commercial, industrial, and government land-mobile-radio (LMR) wireless-communications systems including:
  • Public Safety
  • Marine/Coast Guard
  • Private Networks
  • Railroad
  • Civil Aviation
product specifications:
Item No
Item Name
Ethernet Directional Power Sensor Monitor
Measurement Type
True Average Forward and Reflected Power VSWR
Frequency Range
4043E-1-420503-yyzz   (118 MHz to 136 MHz)
4043E-1-440503-yyzz   (144 MHz to 174 MHz)
4043E-1-450503-yyzz   (380 MHz to 450 MHz)
4043E-1-460503-yyzz   (450 MHz to 512 MHz)
4043E-1-470503-yyzz   (762 MHz to 806 MHz)
4043E-1-480503-yyzz   (806 MHz to 869 MHz)
4043E-1-490503-yyzz   (896 MHz to 940 MHz)

Max Forward Power Measurement
       05 = 500 W

Communication Interface
       03 = Ethernet

yy: Input Connector
       01 = N (F)
       02 = N (M)
       03 = 4.3/10 (F)
       04 = 4.3/10 (M)

zz: Output Connector
       01 = N (F)
       02 = N (M)
       03 = 4.3/10 (F)
       04 = 4.3/10 (M)
Channel Bandwidth
Power Measurement Range
Forward Power: 25 W to 500 W

Reflected Power: 2.5 W to 50 W
Impedance Ω
50 Ohms, nominal
Loss: 0.2 dB (max)
VSWR: 1.15 (max)
25 dB (min)
Peak-to-Average Ratio
12 dB (max)
Measurement Accuracy
± 5% of reading
Interface: Ethernet 10/100/1000BASE-T (auto-sensing) Version 2.0/IEEE 802.3

RF Connectors
Input: N (M), 4.3/10 (M)
Output: N (F), 4.3/10 (F)
Supported Protocols: TCP/IP Hosted web page, SNMP v2.0 Client
Power Supply: 5.5-40 VDC, 3W max, 0.08 in (2 mm) power jack. 15 VDC adapter included
Operating Position: Any
Push-to-Talk input (PTT) for spurious alarm suppression: NO or NC logic (software selectable)
3.5mm terminal push-lock, optically isolated
Humidity: 95% max, noncondensing
Altitude: 15,000 ft (4,572 m) max

Operating: 0 to 50 °C (32 to 122 °F) | Storage: -40 to 80 °C (-40 to 176 °F)
Size (without connectors): 5.2" x 3.8" x 1.4" (13.2 x 9.7 x 3.6 cm)
Weight: 0.5 lb (0.23 kg)
compatible devices:
Channel Power Monitor Display
Channel Power Sensor - RJ-25
Ethernet Power Sensor Monitor
Directional Power Sensor - RJ-25
Non-Directional Power Sensor