Welcome

If you are as “ancient” as I am, you will remember when the only two-way communication was by land-line telephone or
telegraph, radio telegraph between ships, and a few specialized contacts between people. Two-way voice communication began between “hams” and between commercial offices.

In the early 1920’s radio broadcast stations began to operate. People (like me) built crystal radio receivers using coils wound on oatmeal boxes and using “cat’s whisker” galena detectors driving high impedance headphones. I remember connecting three or four headphones in series on one crystal set so that several people could listen at the same time.

But nothing is static. All things change. Higher and higher frequencies were used when vacuum tubes replaced the galena detectors and amplifiers were added to drive cumbersome loudspeakers. In time, television was developed from
a spinning disk into a system using a cathode ray tube to display the images. FM broadcast stations began, touted as noise-free music stations.

From these meager, and sometimes painful, beginnings you are now able to communicate with people all over the world via telephone and FAX, and by electronic mail on your home computer. Using the Internet or a Web site you can explore innumerable sources of important and vital information anywhere, anytime, for the cost of a local telephone call.

Technology has proceeded at an exponential rate and the end is not in sight.

Some of the items available in this catalog would not have been possible a decade ago. Some call us foolish, but we continue to keep abreast of the changes in test requirements for EMI specifications. For example, we have developed tunable modules (Type 9554 series) which, when used with our Model 9354-1 Universal Transient Generator, enable
test engineers (like you) to apply damped sine wave pulses to a test sample over the full range of 10 KHz to 100 MHz at the levels stipulated in MIL-STD-461C/D/E and other specifications. The injection technique requires an injection probe, such as our Type 9335-2, to couple the pulse onto the line.

Our day-by-day development of new EMI test equipment and related products since 1960 is substantial proof that, “There is no substitute for experience”. We would like to hear from you because we know we can help with your EMI problems.
Communicate with us via telephone, FAX or e-mail.

Cordially,

Al Parker
1915-2001