Parts List for REV1 K3JSE Deviation Meter 
Digital Measurement Unit (DMU)

IC1 - MCP6002 Low-voltage op-amp (2-channel)
Q1 - 2N2907 PNP bipolar transistor
VR1 - 78L33 3.3V linear voltage regulator.

Raspberry Pi Pico2 - supplied separately and soldered to the 
40 pin area of the printed circuit board.

1 - 8 Pin Machine Socket

LED1  - Yellow LED 3mm
LED2  - Green LED 3mm

All leaded resistors are 1/8W.
R1 - 47k
R2 - 10k
R3 - 10k
R4 - 10k
R5 - 10k Multi-turn Pot
R6 - 10k
R7 - 330 ohm
R8 - 100k
R9 - 10k
R10 - 1k

C1 - 10uF 25V Polarized Electrolytic - observe polarity
C2 - 0.1uF 50V Yellow MLCC marked 104
C3 - 0.1uF 50V Yellow MLCC marked 104
C4 - 10uF 25V Polarized Electrolytic - observe polarity
C5 - 1000pF (1nF) Blue MLCC marked 102
C6 - 470pF 50V Yellow MLCC marked 471
C7 - 0.1uF 50V Yellow MLCC marked 104
C8 - 0.1uF 50V Yellow MLCC marked 104
C9 - 47pF 50V Yellow MLCC marked 47 

Headers are installed with the shorter part inserted into the PC board.
H1 - 6-pin blue header
H2 - 6-pin blue header
H3 - 4-pin white header
H4 - No header pins supplied - solder USB cable directly into 
the holes of the printed circuit board - as instructed below.

MicroUSB Pigtail - plugs into the Raspberry Pi Pico2 and 
the leads are soldered in the H4 holes.
The color and hole wiring table is as follows:
Red   = 1 (+)
White = 2 (D-)
Green = 3 (D+)
Black = 4 (GND)

J1 - Female RJ45 Chassis Connector - solder-in type
J2 - Female 3.5MM Stereo Chassis Connector - solder-in type
J3 - USB-B Shielded Female Chassis Connector - solder-in type

K3JSE Deviation Meter DMU Board (REV1) Green

Extruded Aluminum Case & Aluminum K3JSE Front / Rear Panels (black)
8 - 2.5 x 5mm Black Screws


Copyright 2026 Kevin K. Custer - W3KKC
Masters Communications
All Rights Reserved