When the AMSAT-OSCAR 7 (AO-7) amateur radio satellite was launched in 1974, its expected lifespan was about five years. The plucky little satellite made it to 1981 when a battery failure caused it ...

Australian amateur radio enthusiasts are ready to be part of history after the first polar space mission — with an Australian ...

What are ham radios? In short, ham radio operators are amateur radio enthusiasts who communicate with one another via radio frequencies assigned specifically to this community by the Federal ...

West Ham have been charged by the Football Association over alleged homophobic chanting by their fans during last month's 2-1 loss at Chelsea. The FA said the club were being charged with ...

The propagation velocity and the velocity factor of the transmission line are calculable from the transit times are nearly two-thirds the speed of light in free space, just as in the published data ...

AMONG the facts to be explained in a satisfactory theory of the propagation of radio waves over the earth's surface are the curvature of the rays in transmission between stations far apart ...

THE modified form of the ionic deflexion theory of wave propagation, discussed by Messrs. Nichols and Schelling (NATURE, March 7, vol. 115, p. 334), appears to have been suggested in England and ...

It’s remarkable how many switching regulator chips use the same basic two-resistor network for output voltage programming. Figure 1 illustrates this feature in a typical (buck type) regulator. See R1 ...

Head Coach Graham Potter has named an unchanged West Ham United starting XI for the third Premier League game in a row for Monday’s home fixture with Newcastle United. Potter has kept faith with the ...