Bird - The RF Experts
4043, Directional RF Power Sensor

Directional RF Power Sensors

Provides Composite Power

4043 RF Power Sensors provide both forward and reflected individual channel power measurements with +/-5% of full scale accuracy, at power levels of up to 500 watts and is also NIST traceable. This sensor is intended for use at the transmit combiner output, in order to provide both individual channel output from the combiner power, as well as antenna VSWR information.

Forward and reflected power measurements of the 4043 sensors determine the VSWR of your ANTENNA and cable feedline. Know immediately when your antenna is damaged and your transmission is compromised.

Interface Options
  • 4043, Directional Power Sensor (RS-485 via RJ-25 Connector)
  • 4043E, Ethernet Directional Power Sensor (RJ-45 Connector)
product specifications:
Item No
Item Name
Directional RF Power Sensor
Frequency Range
4043(E)-1-440505-0201: 144 MHz to 174 MHz
4043(E)-1-450505-0201: 380 MHz to 450 MHz
4043(E)-1-460505-0201: 450 MHz to 512 MHz
4043(E)-1-470505-0201: 762 MHz to 806 MHz
4043(E)-1-480505-0201: 806 MHz to 869 MHz
4043(E)-1-490505-0201: 896 MHz to 940 MHz
Power Measurement Range
Forward Power: 25 to 500 W
Reflected Power: 2.5 to 50W
Dynamic Range
13 db
+/- 5% of reading
Impedance Ω
< 0.2 dB
Intermodulation Distortion - PIM
<-145 dBc
Instrument Interface
4043 Series: RS-485 via RJ-25 Connector
4043E Series: RJ-45 Connector
RF Connectors
N(M) / N(F)
Power Supply
7/18 VDC, <50 mA (from 3141)
0 to 50°C
[L x W x H]
5.2"x 3.8" x 1.4" (132 x 96.5 x 35.5 mm)
0.5 lbs (0.3 kg)
CE, RoHs
compatible devices:
Channel Power Monitor Display