7412533538

Recent

Developments

in

Electronics

s

i

7

A    Black Light

Detects Contaminants

A high-intensity ultraviolet lamp is bcing uscd above to chcck a chassis for contaminants. Such lamps, madę by Black Light Eastern Corp., Bayside N. Y., will also show up soldcr flux rcsiduc, hydrocarbons, and lint when present in smali traccs or thin films.

A New Tracking System for Atlantic Missile Rangę

The new “Azusa" tracking system for the Atlantic Missile Rangę, Cape Canaveral, Fla., is undergoing finał checkout at the San Diego plant of Contatr (Astronauticsł Div. of General Dynamics Corp. When com-pleted, the system will be dismantled and air-shipped to AMR for installation. Plastic radomes are used to protect the tracking system's parabolic antennas. Each antenna installation is pressurized to inflate these radomes and to keep out moisture, dust, and fungus.

4 Tube-less, Transistor-less Radio Transmitter

A tube-less. transistor-less miniaturę radio communication transmitter tinier than a spool of thread was used as an electronic wand for the first time in a remote-control operation to break ground for a plant ex-pansion of the G-E Communication Products Dept. The transmitter measures less than 1 inch in any dircction. A spiral antenna protruding from one end and a handle extending from the opposite end gives the unit a wand-like appearance. Heart of the transmitter is one of the new tunnel diodes. (See article “Tunnel Diodes— Experimen-tal Solid-State Devices“ in this issue.)

48

ELECTRONICS WORLD