The 4042E from Bird is a RF Power Meter & Sensor with Frequency 100 MHz to 1 GHz, Power Range 40 to 56.99 dBm, Bandwidth 6.25 KHz, 12.5 Khz, 25 kHz, Power Range Watt 10 to 500 W(Forward Power), Resolution 0.2 dB. Tags: Inline Power Meter, Power Meter. More details for 4042E can be seen below.