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Received the units that were ordered._When I tested them they did not perform well._Below 100MHz the readings are very unstable._The instability appears to be caused by either the micro, the display or the combination of the two as the output voltage from the detector is very stable._IFR 2031A signal generator set at -10dBm, power meter calibrated to -10dBm at 900MHz, the results were as follows:_At 1.0MHz readings fluctuated between -4.4 to -39.0dBm_At 2.0MHz readings fluctuated between -4.6 to -30.3dBm_At 5.0MHz readings fluctuated between -2.1 to -26.0dBm_At 10.0MHz readings fluctuated between 1.7 to -30.6dBm_At 20.0MHz readings fluctuated between -5.6 to -15.0dBm_At 50.0MHz readings fluctuated between -10.4 to -11.3dBm_At 100.0MHz reading was -10.8dBm_At 200.0MHz reading was -10.6dBm_At 500.0MHz reading was -10.4dBm_At 900.0MHz reading was -10.0dBm_At 1.0GHz reading was -10.0dBm_Both units appear to behave the same.

Received the units that were ordered. When I tested them they did not perform well. Below 100MHz the readings are very unstable. The instability appears to be caused by either the micro, the display or the combination of the two as the output voltage from the detector is very stable. IFR 2031A signal generator set at -10dBm, power meter calibrated to -10dBm at 900MHz, the results were as follows: At 1.0MHz readings fluctuated between -4.4 to -39.0dBm At 2.0MHz readings fluctuated between -4.6 to -30.3dBm At 5.0MHz readings fluctuated between -2.1 to -26.0dBm At 10.0MHz readings fluctuated between +1.7 to -30.6dBm At 20.0MHz readings fluctuated between -5.6 to -15.0dBm At 50.0MHz readings fluctuated between -10.4 to -11.3dBm At 100.0MHz reading was -10.8dBm At 200.0MHz reading was -10.6dBm At 500.0MHz reading was -10.4dBm At 900.0MHz reading was -10.0dBm At 1.0GHz reading was -10.0dBm Both units appear to behave the same.

Received the units that were ordered._When I tested them they did not perform well._Below 100MHz the readings are very unstable._The instability appears to be caused by either the micro, the display or the combination of the two as the output voltage from the detector is very stable._IFR 2031A signal generator set at -10dBm, power meter calibrated to -10dBm at 900MHz, the results were as follows:_At 1.0MHz readings fluctuated between -4.4 to -39.0dBm_At 2.0MHz readings fluctuated between -4.6 to -30.3dBm_At 5.0MHz readings fluctuated between -2.1 to -26.0dBm_At 10.0MHz readings fluctuated between 1.7 to -30.6dBm_At 20.0MHz readings fluctuated between -5.6 to -15.0dBm_At 50.0MHz readings fluctuated between -10.4 to -11.3dBm_At 100.0MHz reading was -10.8dBm_At 200.0MHz reading was -10.6dBm_At 500.0MHz reading was -10.4dBm_At 900.0MHz reading was -10.0dBm_At 1.0GHz reading was -10.0dBm_Both units appear to behave the same.