RF Cafe Homepage
LadyBug RF Power Sensors

Innovative Power Products (IPP) RF Combiners / Dividers

Windfreak Technologies Frequency Synthesizers - RF Cafe

Please Support RF Cafe by purchasing my  ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

KR Electronics (RF Filters) - RF Cafe

News Briefs
July 1962 Radio-Electronics

July 1962 Radio-Electronics

July 1962 Radio-Electronics Cover - RF Cafe[Table of Contents]

Wax nostalgic about and learn from the history of early electronics. See articles from Radio-Electronics, published 1930-1988. All copyrights hereby acknowledged.

Amongst the noteworthy items announced in the July 1962 "News Briefs" column in Radio-Electronics magazine was the impending end of the DoD's CONELRAD early warning defense system. It was being replaced with the Emergency Broadcast System in 1963, which was later replaced by the Emergency Alert System in 1997. Changing names for essentially the same service was - and remains today - a shining example of government waste. Westinghouse debuted its slow-scan TV system for transmitting still images via telephone wires - sort of an early Internet means of downloading pictures that could be stored on magnetic tape. Japan was deploying (with U.S. launching) a constellation of satellites in geosynchronous orbit with plans to present a live broadcast of the 1964 Summer Olympic Games being held there. A ground-breaking new type of AC/DC power supply was announced which chopped up the AC input into high frequency pulses and recombined them to create a DC output - without the use of a transformer!

News Briefs: 11/57 | 8/58 | 11/59 | 2/60 | 4/60 | 8/60 | 9/60 | 10/60 | 12/60 | 1/61 | 3/61 | 5/61 | 6/61 | 7/61 | 8/61 | 9/61 | 10/61 | 11/61 | 12/61 | 1/62 | 2/62 | 3/62 | 4/62 | 5/62 | 7/62 | 8/62 | 9/62 | 10/62 | 11/62 | 3/63 | 4/63 | 6/63 | 8/63 | 9/63 | 3/64 | 7/64 | 8/64 | 12/64 | 8/64 | 9/64 | 1/66 | 3/66 | 8/66 | 9/66 | 1/67 | 3/67 | 4/67 | 5/67 | 6/67 | 9/67 | 3/68 | 4/68 | 5/68 | 8/68 | 9/68 | 1/69 | 11/69

News Briefs

Low-budget TV system that transmits still images - RF Cafe

Low-budget TV system that transmits still images demonstrated recently by Westinghouse Electric.

Nippon Electric satellite, with its four banks of solar cells - RF Cafe

The Nippon Electric satellite, with its four banks of solar cells.

News Briefs, June 1961 Radio-Electronics - RF CafeSlow-Scan Television Works on Phone Lines

A low-budget TV system, designed to transmit still images rather than moving figures, was demonstrated recently by Westinghouse Electric Corp. The system uses a new slow-scan vidicon TV camera tube type 7290. The camera produces one frame every 8 seconds, turning the video information into audio frequencies. This picture can be recorded with an ordinary tape recorder, sent over standard phone lines, or transmitted by any radio capable of transmitting voice. With it, televised pictures for education, business purposes or newspaper work can be transmitted at low cost, with a minimum of equipment and installation work. The camera's lens focuses the live image on the vidicon screen. An electronic shutter then freezes the image, which is scanned at the 8-second rate. At the end of the scan, another frame is frozen on the screen.

Japanese Satellites to Report 1964 Olympics

The Nippon Electric Co., Ltd., hopes to orbit three or four Japanese-made communications satellites to relay news of the 1964 Olympic Games at Tokyo, if their research on a 105-pound satellite, equipped with solar batteries, is successful. The satellite will be orbited by the United States National Aeronautics and Space Administration. It is expected to minimize the cost to Japan of getting the satellites into outer space. It is hoped to orbit the satellites at an altitude of 22,380 miles above the earth, where their velocity.

New Power Supply Regulates with Pulses

A new, heavy-duty regulated power supply converts line ac immediately to dc, eliminating the usual 60-cycle transformer. A dc chopper then converts the dc to high-frequency bidirectional pulses, the voltage of which is stepped up or down, as desired, by a high-frequency transformer. Silicon controlled rectifiers produce the high-frequency pulses at variable widths, thus regulating the voltage. The wider the pulses, the higher the output voltage will be. The system is efficient only for load power ratings above about 2 kw. This new approach to power conversion was described by Dr. Victor Wouk, chairman of the Subcommittee on Power Supplies of the IRE. Supplies of this type are being manufactured by Dr. Wouk's company, Electronic Energy Conversion Corp., Bethpage, N. Y.

Molybdenum a Superconductor

Pure molybdenum has been discovered by Bell Laboratories Researchers to be a superconducting element (a material that loses all its electrical resistance as its temperature approaches absolute zero). Molybdenum is the 24th element found to be superconducting.

The report, which appeared in the April 15 issue of Physical Review Letters, states that a very pure sample of molybdenum was studied. The study also suggests that, as extremely pure samples become available, studies should be conducted on other metals previously thought of as non-superconducting.

Conelrad Abandoned

The Defense Dept. has notified the FCC that restricting broadcasting to 640 and 1240 kc during defense emergencies no longer is necessary and that the system will be changed to "insure more effective presidential and civil defense communication with the public in the event of a national emergency." While modernization is in progress, the old system will, however, continue in effect.

Under the proposed new system, according to FCC Commissioner Bartley, some stations might still be shut down or required to stand by to reduce interference; stations may receive fallout protection surveys and emergency power equipment from the Defense Dept.; state defense-network FM stations will have top priority in getting such assistance; the FM defense network might be expanded to a national network.

TV's Most Distant "Echo" - RF CafeTV's Most Distant "Echo"

The admittedly Class-B picture shown was the first TV image to be transmitted and received by satellite relay. Sent from the Massachusetts Institute of Technology field station near San Francisco, it was bounced off Echo I and received at the Millstone Hill Laboratory in Massachusetts. The distance on earth between the two points is 2,700 miles. The signal's course was considerably longer, Echo I being 1,000 miles above the earth at the time.

KR Electronics (RF Filters) - RF Cafe
RF Electronics Shapes, Stencils for Office, Visio by RF Cafe

Anatech Electronics RF Microwave Filters - RF Cafe

Crane Aerospace Electronics Microwave Solutions