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The 80425A from Giga-tronics is a Power Sensor with Frequency 10 MHz to 18 GHz, Power Range -34 dBm to +47 dBm, Max Input Power +47 dBm (50 W). More details for 80425A can be seen below.
TVAC compliant USB and LAN Power Sensor
10 MHz to 8 GHz Three-path Diode Power Sensors
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