APPENDIX A
MIL-HDBK-162A
Volume 1 of 2
15 December 1965
NAVY MODEL LETTER SYSTEM (cont'd)
Model Letter
Model Subseries
Type Equipment
Remarks
Series
OG------------ -
------------------
OK---------- ---
Sonar Computers.
OM---------- ---
Test Monitor Equipment.
OP---------- ---
Signal and Sound Wave Measuring
Equipment, Noise Meters.
-----------
OS---------- ---
-----------
OT--------------
Radar Operator Trainers.
-----------
OV----------- --
Vacuum Tube Analyzers or Testers.
-----------
OW------------
Sonar Test Equipment.
-----------
OZ--------------
P -----------
------------------
Automatic Transmitting and Receiving
Equipment Coding Equipment.
Q -----------
------------------
Sonar Echo-Ranging-Listening Equipments:
E/R/L (Quartz).
E/R/L (Rochelle Salt).
E/R (Magnetostriction) with L
(Rochelle Salt).
QD---------- ---
Depth Determining Equipment.
QF--------------
Teacher & Training Equipment
QG---------- ---
Console Version of "QC" Series.
QJ---------- ----
Console Version of "QB" Series.
QK---------- ---
Scanning Sonar-Crystal.
QL--------------
QX------------ -
Auxiliary Equipments to Echo
Ranging Gear.
R -----------
------------------
Radio Receiving Equipment---------------
Panoramic Radio
Adapters were in-
RP--------------
Panoramic Radio Adapters-------------
cluded in this class
up through Model
REZ.
S -----------
------------------
Search Radar Equipment.
T -----------
------------------
Radio Transmitting Equipment:
TP---------- ----
U -----------
------------------
Remote Control:
UX--------------
Mobile Remote Control.
V -----------
------------------
W -----------
------------------
Sonar - Combined Ranging and Sounding:
WA------------ -
Combined Sounding-Ranging
------------------
(Magnetostriction).
WB------------ -
Combined Sounding-Ranging
------------------
(Rochelle Salt).
WC--------- ----
Combined Sounding-Ranging (R/S
Sounding) (M/S & R/S Ranging
and Listening).
WD------------ -
Combined Sounding-Ranging (R/S
-- Sounding) (M/S & R/S Ranging
and Listening).
WE------------ -
Combined Lightweight M/S Echo
--- Ranging with sounding feature
removed.
-----------
WF------------ -
Combined Ranging-Sounding-
--- Listening (Sonic & Supersonic
--- Listening using ADP crystals).
1A-15