Note : Your Quotation Request will be directed to Boonton.
The /56218 from Boonton is a Power Sensor with Frequency 30 MHz - 18 GHz, Power Range -34 to +20 dBm, Peak Power Range -24 to +20 dBm, CW Power Range -34 to +20 dBm, Rise time <150 ns. More details for /56218 can be seen below.
TVAC compliant USB and LAN Power Sensor
10 MHz to 8 GHz Three-path Diode Power Sensors
You can now find similar products from multiple companies on everything RF.