| DOCUMENT IDENTIFICATION | 91912/A/ |
| DOCUMENT SOURCE | 10001 |
| DOCUMENT TYPE | INSTRUCTION BOOK |
| EMISSION TYPE | N0N AND A1A AND A2D AND A3E AND F1B AND F2D AND F3E AND P0N AND P1D |
| AC VOLTAGE RATING | 115.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED |
| CHANNEL QUANTITY | 1750 |
| FREQUENCY RATING | 55.0 HERTZ MINIMUM AND 65.0 HERTZ MAXIMUM LOCATION NOT OTHERWISE SPECIFIED |
| INDICATOR TYPE | AUDIO AND CATHODE RAY TUBE |
| INSTALLATION DESIGN | FIXED AND SEABORNE |
| JOINT ELECTRONICS TYPE DESIGNATION SYSTEM ITEM NAME | DIRECTION FINDER SET |
| JOINT ELECTRONICS TYPE DESIGNATION SYSTEM ITEM TYPE NUMBER | AN/URD-4 |
| OPERATING FREQUENCY | 225.000 MEGAHERTZ MINIMUM AND 399.900 MEGAHERTZ MAXIMUM |
| PHASE | SINGLE LOCATION NOT OTHERWISE SPECIFIED |
| VEHICLE FOR WHICH DESIGNED | SHIP |