Lucero II

RAF designation

ARI 5645

 

Function

Lucero is a homing, beam approach and IFF interrogator for use with H2S, ASV and AI. It uses the IF amplification stages of the equipment with which it is used and also the display appears on the CRT of the parent equipment. Due to this inter-connection and also to the fact that different marks of the equipment to be interrogated have different carrier frequencies, several variations of Lucero have been produced. The TR 3566A. which here is briefly described, is the Bomber and Coastal Command version, the same basic set being used by both commands. Push-button frequency selector is used by Bomber Command. while Coastal use a functional selector switch.

 

Year of issue

1944

 

Type of wave

Pulse modulated

 

Pulse width

5 microseconds

 

Pulse recurrence frequency

217 c/s

 

Frequency range

Range

Transmitter

Receiver

1

171-181 (177) Mc/s

171-181 (176) Mc/s

2

212-226

168-178

3

222-236

210-238

4

222-236

220-238

 

Main items

  • Transmitter Receiver TR 3566

  • Power unit 532

  • Receiving unit 161

  • Switch unit type 115

  • Transmitter unit type 105

  • Waveform generator type 3C

  • Control unit type 222A

 

Remarks

Used by Bomber Command and Fleet Air Arm.
Developed for 1.7 meter beacons by 9 and 3 cm radar (H2S and ASV Mk VI)
some versions switchable to two Eureka channels.