Page 26: of Maritime Reporter Magazine (May 1974)

Fully automatic navigation aid

Just set the selectors for the desired

Loran C chain and turn the mode selector to

AUTO...DL91 does the rest.

The master and two slave stations are locked and matched on the third cycle. The intervals are displayed as digital LOP readouts with one-tenth of a microsecond accuracy. And the lines of position are continuously tracked and updated.

With DL91 you automatically acquire a fast and accurate fix.

Highest accuracy and longest range

Unlike combined Loran A/C units, DL91 is a cycle matching receiver specifically designed to make full use of Loran C transmissions. Accuracy of groundwave fixes varies from 100 feet at short range to 500 yards at ranges of 1000 miles. Repeatable accuracy within 50 feet lets you return to the same position time after time.

Skywave coverage, especially at night, extends out to 2500 miles.

Exclusive extended range coverage

In addition to complete manual back-up controls, DL91 has a unique extended range mode which automatically shifts cycle matching from the third to the seventh cycle.

This extends the groundwave coverage an additional 250 miles.

Complete with antenna and coupler

Other features of DL91 include a six foot whip antenna and specially tuned coupler, two tuneable notch filters, four optional plug-in filters, a built-in system test, on-line monitor, and outputs for data processors and automatic plotters.

Exceptionally light and compact, DL91 mounts almost anywhere—table top, overhead, console, bulkhead, vertically or horizontally. An optional remote dual display unit is available.

We make our guarantee work

Completely solid state, the American made

DL91 uses plug-in modular circuit boards and integrated circuitry for maximum reliability.

However, if it ever should need servicing, you can depend on the factory trained technicians of our 100 nationwide ITT Decca

Marine dealers—and the world-wide Decca organization—to have you underway quickly.

For more information and the name of your nearest dealer, contact ITT Decca Marine,

Inc., Dept. MR5,386 Park Avenue South,

New York, N.Y. 10016, (212)685-5157.

ITT DECCA MARINE

DL91 Dual Automatic

Loran C

D introducing

DL91 Loran C.

Two simultaneous LjOP's for more accurate fixes up to 2500 miles.

Automatically. 28 Maritime Reporter/Engineering News