Specifications

SCHEMATIC AND CIRCUIT BOARD NOTES
* COMPONENT IS FREQUENCY SENSITIVE. REFER TO
THE ELECTRICAL PARTS LIST FOR VALUE AND
USAGE.
1. UNLESS OTHERWISE STATED, RESISTANCES ARE
IN OHMS (k = 1000), AND CAPACITANCES ARE IN
PICOFARADS (pF) OR MICROFARADS (uF).
2. DC VOLTAGES ARE MEASURED FROM POINT
INDICATED TO CHASSIS GROUND USING A
MOTOROLA DC MULTIMETER OR EQUIVALENT.
TRANSMITTER MEASUREMENTS SHOULD BE MADE
WITH A 1.2 uF CHOKE IN SERIES WITH THE
VOLTAGE PROBE TO PREVENT CIRCUIT LOADING.
3. REFERENCE DESIGNATORS ARE ASSIGNED IN THE
FOLLOWING MANNER:
UNITS SERIES = RECEIVER
100 SERIES = TRANSMITTER
200 SERIES = FREQUENCY GENERATION
300 SERIES = MISCELLANEOUS
400 SERIES = HOUSING/ESCUTCHEON
500 SERIES = DISPLAY
600 SERIES = HEAR CLEAR OPTION
700 SERIES = CONTROLLER
4. INTERCONNECT TIE POINT LEGEND:
5V REG = REGULATED FIVE VOLTS
B+ = BATTERY VOLTAGE (7.5V)
R5 = RECEIVER FIVE VOLTS
T5 = TRANSMITTER FIVE VOLTS
CLK = CLOCK
D = DATA
DAC = DIGITAL TO ANALOG
CONVERTER
DAC RST = DAC RESET
LCK = LOCK
NC = NO CONNECTION
SYN = SYNTHESIZER
VR = VOLTAGE REGULATOR
INSERT DIAGRAMS
(L1) BEPF-24631-O (20% BLK, 133 LINE)
(OL) BEPF-24632-O (100% BLK.)
R.T. 50%
INSERT DIAGRAMS
(L8) BEPF-24633-O (20% BLK., 133 LINE)
(OL) BEPF-24634-O (100% BLK.)
R.T. 50%
MAEPF-18828-A
INSERT SCHEMATIC DIAGRAM
63D81200C31-O (100% BLK.)
(OL) DEPF-24635-O (100% RED)
R.T.
NUD7070A, NUD7070B, NUD7085A, AND NUD7085B VHF TRANSCEIVER BOARDS’
COMPONENT LOCATION DIAGRAMS AND SCHEMATIC DIAGRAM 29