RECOMMENDED CHANGES TO EQUIPMENT TECHNICAL PUBLICATIONS

RECOMMENDED CHANGES TO EQUIPMENT TECHNICAL PUBLICATIONS

SOMETHING WRONG

WITH THIS PUBLICATION

FROM: (PRINT YOUR UNITS COMPLETE ADDRESS)

Commander

THEN ... JOT DOWN THE INFO

Stateside Army Depot

ABOUT IT ON THIS FORM.

ATTN: AMSTA-US

CAREFULLY TEAR IT OUT.

Stateside, N.J. 07703-5007

FOLD IT AND DROP IT IN THE

DATE SENT

MAIL.

10 July 1975

PUBLICATION NUMBER

PUBLICATION DATE

PUBLICATION TITLE

TM 11-5840-340-20

23 Jan 74

Radar Set AN/PRC-76

BE EXACT PIN-POINT WHERE IT IS

IN THIS SPACE TELL WHAT IS WRONG

AND WHAT SHOULD BE DONE ABOUT IT:

PAGE

PARA

FIGURE

TABLE

GRAPH

2-25

2-28

Recommend that the installation antenna alignment

procedure be changed throughout to specify a 20 IFF

antenna lag rather than 10.

REASON: Experience has shown that with only a 10 lag,

the antenna servo system is too sensitive to wind gusting in

excess of 25 knots, and has a tendency to rapidly accelerate

and decelerate as it hunts, causing strain to the drive train.

Hunting is minimized by adjusting the lag to 20 without

degradation of operation.

3-10

3-3

3-1

Item 5, Functional column. Change 2 dB" to 3 dB".

REASON: The adjustment procedure for the TRANS POWER

FAULT indicator calls for a 3 dB (500 watts) adjustment to light

the TRANS POWER FAULT indicator.

5-6

5-8

Add new step f.1 to read, Replace cover plate removed in

step e.1, above."

REASON: To replace the cover plate.

FO-3

Zone C 3. On J1-2, change +24 VDC" to +5 VDC".

REASON: This is the output line of the 5 VDC power supply.

+24 VDC is the input voltage.

PRINTED NAME, GRADE OR TITLE AND TELEPHONE NUMBER

SIGN HERE

SSG I. M. DeSpiritof

999-1776

PREVIOUS EDITIONS

P.S. - IF YOUR OUTFIT WANTS TO KNOW ABOUT YOUR

FORM

2028-2

ARE OBSOLETE

RECOMMENDATION MAKE A CARBON COPY OF THIS

1 JUL 79

AND GIVE IT TO YOUR HEADQUARTERS.