AN-ARN21 Wiring

RT220B

Range

ID-310

Azimuth

ID-307

Control

Power Supply

115V/ 3A/ 400Hz

28V dc/1A

Morse code

45 pin

10 pin

19 pin

19 pin

7 pin

26 pin

37 pin

14 pin

J1906

J1905

J1902

J1901

Antenna

HN

12

13

3

9

MT 928

C886

Plugs

The 3 plugs for the cockpit instruments and 4 on the rackmount are MIL-C-5015 style plugs like the DS5015 series from Amphenol-Socapex

The cable parts are

Plug Type / Shellsize/insert

J1601 DS3106A 20-27 P

J1701 DS3106A 28-21 S

J1801 DS3106A 28-12 S

J1906 DS3106A 18- 1 P

J1905 DS3106A 22-14 P

J1902 DS3106A 22-14 S

J1901 DS3106A 18- 9 S

Other ARN21 versions

Parts and Diagrams

British (ST)ARN-21

Beacon Simulator

Course Indicators

A tribute to its inventor, Sven H. Dodington.

VINTAGE AVIONICS

ARN21 CaBle set

Control panel To

J1906 C-866

A on A

B T/R C

11 C tens (12 side) G

D +28V H , M

E gnd J

F - I

14 G units ( 0 side) D

6 H headset B

13 I units ( 9 side) E

12 J tens (00 side) F

speaker N

Azimuth Indicator To

J1905 ID-307

36 A motor C

28 B 15Hz (R) p

33 C 24V ac A,F

21 D 135Hz (R) T

43 E -

42 F -

H +28 via 33k

41 J gnd B,E,

25 K 15Hz in m

34 L Valid

35 M Tacho D

27 N 15Hz (C) n

17 P -

20 R 135Hz (C) R

19 S 135Hz rotor N

T gnd P, S

26 U 15Hz in k

Range Indicator To

J1902 ID-310

41 B gnd

40 C gnd B,E,Y

D gnd G,K

31 E 4kHz rotor A

38 F

37 G 4kHz (C) D

29 H Motor H

J Tx + 28V M .

15 K + range pot R

22 L - range pot T

23 M wiper pot S

N -

39 P Valid coil N

30 R Tacho L

33 S 24V ac F,J

10 T 4kHz (R) Z

Power Supply To

J1901 generator

45 A gnd

1 C 115V ac var freq (320-1000Hz)

44 D +28V dc ( 0.8A max)

3 E 115V ac fixed freq (360-440Hz)

For each wire in each cable, you find in the table:

pin # on the 45-pole plug on the RT220 (if applicable), pin # on the round mount plug, signal description, pin # (TO) on the cockpit instrument.

Look also at the original cable diagram.