Broadband noise generator suitable for the comparison of test sites/shielded enclosures. It is a self-contained unit with a rechargeable PP3 battery. The device creates “white” noise over the main spectrum but is useable down to 150 kHz. There is a single top-loaded monopole for emitting efficiently over the spectrum. Very similar to item 511 but physically much smaller. Comes calibrated directly into 50Ω and with a radiated emissions profile @ 3 metre. This particular unit is fitted with the NiMH rechargeable cell running for two hours when fully charged. Size of device is 120 x 120 x 41mm. The extra length of the top loaded monopole is 100mm. Disk diameter is 100mm.