Singer Stoddart NM 65T Radio Interference Analyzer / Receiver The NM67 1GHz to 18GHz RFI/EMI Receiver is a precision, programmable EMI receiver used for the measurement of conducted or radiated RF signals, within the frequency range of 1GHz to 18GHz in accordance with military and commercial EMI test specifications. It has three IF bandwidths of 0.1, 1.0 and 10MHz utilizing a logarithmic If amplifier which provides 60 dB dynamic amplitude display range on the panel meters. With three 20 dB attenuator steps, the overall measurement range is 120 dB, from 1 µV to 1 V. An internal calibrator module enables standardizing the gain- assuring accurate amplitude measurements. Typical dynamic measurement range is -100 dBm to +13 dB