Masters Communications DRA-3M  Parts List
This list covers both models.  
[RJ45 model notes in brackets]
((DIN6 model notes in double parentheses))

U1 - TL074CN - Integrated Circuit - OP-AMP
U2 - LM78L05 - 5.0V 3-Terminal Voltage Regulator
U3 - LM386 - IC Audio Amplifier

1 - 14 pin IC Socket - Machine Type
1 - 8 pin IC Socket - Machine Type
1 - 16 pin IC Socket - Machine Type [present on RJ45 model only]
(The 16 pin IC socket is used for RADIO connector wiring configuration,
and is compatible with Tigertronics - SignaLink Jumper Modules)

D1 - 1N4004 Diode
D2 - BAT43 Diode
D3 - BAT43 Diode
D4 - 1N4148 Diode

LED1 - RED LED 3MM  (long lead goes in the round hole)
LED2 - Green LED 3MM (long lead goes in the round hole)

Q1 - 2N2907 PNP Transistor
Q2 - 2N2222 NPN Transistor

8 - Short White Jumper Wires [include with RJ45 model]

RY1 - 1A05 5V relay (black)
The relay can be installed either way, but you may want to put the printing
to the outside so you can read it.

SC1, SC2 Sound Casd or Modem Input Connectors
2 - Mini-DIN-6 Female Chassis Connectors

RADIO Connector:
Mini-DIN-6 Female Chassis Connector ((DIN6 Model Only))
RJ45 Female Chassis Connector [RJ45 Model Only]

PJ1 - 2.1 X 5.5MM Coaxial Power DC Jack - center pin is positive.

All resistors 1/4 watt

R1 - 1k
R2 - 1k
R3 - 10k
R4 - 10k
R5 - 10k
R6 - 10k
R7 - 10k
R8 - 10k
R9 - 10k
R10 - 10 ohm
R11 - 10k
R12 - 10k
R13 - 10k
R14 - 10k
R15 - 10k
R16 - 10k Pot
R17 - 10k

Resistor Summary:
2 - 1k
1 - 10 ohm
1 - 10k pot - small blue
13 - 10k

C1 - 10uF 25V Electrolytic (Observe Polarity)
C2 - (103) .01uF ceramic MLCC .1 LS
C3 - 47pF ceramic MLCC .1 LS
C4 - 10uF 25V Electrolytic (Observe Polarity)
C5 - (104) .1uF ceramic MLCC .1 LS
C6 - 10uF 16-25V Non-Polarized Electrolytic (NP or BP)
C7 - 10uF 16-25V Non-Polarized Electrolytic (NP or BP)
C8 - 10uF 16-25V Non-Polarized Electrolytic (NP or BP)
C9 - 10uF 16-25V Non-Polarized Electrolytic (NP or BP)
C10 - 10uF 25V Electrolytic (Observe Polarity)
C11 - 10uF 16-25V Non-Polarized Electrolytic (NP or BP)
C12 - 100uF 25V or 35V Electrolytic (brown or blue)  (long lead goes in the square hole)
C13 - 10uF 16-25V Non-Polarized Electrolytic (NP or BP)
C14 - 100uF 16V Non-Polarized Electrolytic (NP or BP)
C15 - (104) .1uF ceramic MLCC .1 LS
C16 - (104) .1uF ceramic MLCC .1 LS
C17 - 4.7uF 25V Electrolytic (small blue)
C18 - (104) .1uF ceramic MLCC .1 LS
C19 - (473) .047uF ceramic MLCC .1 LS

Capacitor Summary:
1 - 4.7uF 25V Electrolytic
1 - 100uF 35V Electrolytic (brown or blue)
4 - (104) .1uF ceramic MLCC .1 LS
1 - (103) .01uF ceramic MLCC .1 LS
3 - 10uF 25V Electrolytic
1 - 100uF 16V NP
6 - 10uF 16-25V NP
1 - (473) .047uF ceramic MLCC .1 LS
1 - 47pF ceramic MLCC .1 LS

JU1 - 3 pin header yellow w/short [absent on RJ45 model]
JU2 - 3 pin header green w/short
JU3 - 3 pin header blue w/short

Z1 - Circuit Trace Fuse - can be renewed with a piece of #30 wire.
.1 LS = Point 1 Inch (0.1") Component Lead Spacing
MLCC = Mulit-Layer Ceramic Capacitor
NP or BP capacitors can be installed without regard to orientation.

1 - DRA-3M-DIN6 or DRA-3M-RJ45 Printed Circuit Board