Com-Power model PAM-6000 Preamplifier is intended for improving measurement system sensitivity during EMC compliance testing. It has a frequency range of 1 GHz to 6 GHz. It has gain of 30 dB. Therefore, It amplifies the signals that were previously hidden below the noise floor of the EMI receiver so that it can be seen and measured. The PAM-6000 has a small gain variation of ±1.5 dB. It can be powered by the rechargeable NimH batteries (included) when an external power source is not available.