Smart meters provide detailed information so a customer can make choices about how and when to use energy and save money, ...

The sound level meter, however, does not take into account the predominant frequency region of the noise ... and C weighting networks (from Handbook of Noise Measurement, General Radio, 1963, p. 9, ...

Technically speaking, ham radio frequency bands are a range of frequencies ... ham radios allow operators to work on two commonly used bands—two meter (2M) and 440—out of the box, and it ...

Amateur radio operators and shortwave listeners have a common enemy: QRM, which is ham-speak for radio frequency interference ... was spewing RFI over a 200-meter radius; a dissection revealed ...

Solar CMEs and SEP events can be accompanied by radio bursts at low frequencies, particularly so-called Type ... The largest boulders are expected to be on the order of 30 meters. Extrapolating from ...