Publications

Microwave radio relay stations have existed in the Bell System in several forms since 1950.1 In this time, the equipment and the layouts within the buildings have changed to accommodate the new des

The design and the transmission performance of terrestrial line-ofsight microwave radio paths is greatly influenced by two clear-air propagation phenomena, obstruction and multipath fading.

The RL4H transmitters incorporate the latest high-frequency, high-power transistors and varactors, and have dispensed with the travelling-wave tubes used in previous microwave transmitters.

Describes the main features and individual parts of a system which provides 1800 speech channels or one TV channel, developed jointly by the Standard Telephones and Cables Ltd.

Describes a link with 5 repeaters and 2 terminal stations to connect an outlying station at Nashville to the national relay network, a distance of 157 miles.

Microwave Repeater Research m INTRODUCTION m TT WAS some 80 years ago that Maxwell and Hertz demonstrated that free space is a good transmission medium for electromagnetic waves.

We have observed a resonance in the real part of the finite frequency diagonal conductivity using microwave absorption measurements in high quality 2D electron systems near integer fillings.

We have measured the diagonal conductivity, sigma(xx), in the microwave regime of an ultrahigh mobility two dimensional electron system.

We present measurements of the real diagonal microwave conductivity of the reentrant insulating quantum Hall phases in the first excited Landau level at temperatures below 50 mK.

Wigner solids in two-dimensional electron systems in high magnetic field B exhibit a striking, microwave or rf resonance, that is understood as a pinning mode.