Tekbox TBPS01 EMC Near-Field Probe Set + 40dB Wideband Amplifier EMC Near-Field Probe Set 40dB Wideband Amplifier in a wooden box TBPS01-TBWA2/40dB EMC Near-Field Probe Set + 40dB Wideband Amplifier in a Wooden Box Slim design for good access in between tightly spaced components Shielded loops to avoid picking up common mode noise; insensitive to the human hand Frequency range: 3GHz, though they can be used well beyond