I.F.F/S.S.R. TRANSPONDER CONTROL UNIT TYPE 16929


LEADING PARTICULARS

Stores Ref. No.:10L/9563379
Nato Stock No.:5895-99-956-3379
Attachment:Dzus D5 Panel Line quarter turn fasteners
Connection:602 pattern, 55 way
Installation:A.R.I. 23134/3

DESCRIPTION

The control unit interfaces directly to the transponder unit of the Mk10 IFF (Indication Friend or Foe) / SSR (Secondary Surveillance Radar) system, otherwise known as IFF/SSR 1520.

The purpose of this system is to reply to radar interrogation with a coded number, which identifies the aircraft to the radar operator.

I.F.F/S.S.R. Transponder Control Unit

Inside unit: switches and lashed wiring harness.


SIMULATION

Simulation is anticipated to be straightforward as the control units switches all control individual ways of the connector. IFF is modelled within flightgear, aiding multi-player scenarios and air traffic control.


WANTED

As mentioned above, having the right connector for this unit would make interfacing a lot easier.

The fixed plug on the chassis is a "602 pattern" connector (MIL-C-26482). The contact layout has 55 contacts (size 20).

I.F.F/S.S.R. Transponder Control Unit - 22-55P Connector

Connector needed for interfacing.

It is marked as an 22-55P; the 22 being 22 16ths of an inch in diameter, and the 55 is the contact count, the P means Pins (instead of S for Socket), no further identification letters indicates a normal orientation.

So, I am after a mating free socket, which would be marked 22-55S, of standard orientation.


REFERENCES

T Mk.5 electrical "Vol. 1":
A.P.101B-1005-1B, Sect. 9, Chap. 2, A.L.59 Sept. 1973, I.F.F/S.S.R. 1520 - Paragraph 4

T Mk. 5 wiring diagrams:
AP101B-1005-10, Sheet 36, A.L.3, Nov 1981, Cabin Lighting, Port
AP101B-1005-10, Sheet 57, A.L.6, Jan 1985, Radio and Radar Installations - Fig 3, I.F.F./S.S.R. 1520