MIL-HDBK-162A
Volume 1
15 December 1965
Section 3
DATE: 1 July 1964
ITEM NAME: INDICATOR GROUP
COGNIZANT SERVICE: USN
TYPE: AN/SPA-51
FEDERAL STOCK NUMBER:
USA
USN
USAF
USMC
STATUS OR TYPE CLASSIFICATION
Mfg(s) Name or Code Number: Hazeltine Electronics Div., Hazeltine Corp., Little Neck, N. Y.
ordinary PPI, as an AEW tracking indicator, or as an
FUNCTIONAL DESCRIPTION
AEW repeat (final) indicator. In addition, when used as
an ordinary PPI, the indicator group has as special
Indicator Group AN/SPA-51 is a general purpose
features the ability to accept azimuth information in the
plan position indicator intended for shipboard use. It is
form of two rectangular coordinate voltages instead of
adaptable to a variety of radar equipments. A front
panel function control switch permits it to be used as an
AN/SPA-51: 1
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