FuG 25a Erstling

Overview

Funkgerät 25a "Erstling"
An Erstling coding unit
General Information
Type	IFF
In Service	1941 - ?
Place of Origin	Germany (Third Reich)
Description	Freya or Würzburg recievers, unknown transmitter
Designer Companies	GEMA
Designers	Guenther Erbsloeh
Period Manufactured	1941 - ?
Characteristics
Transmitter Frequency	156MHz
Receiver Frequency	125 ~±8MHz
Sensitivity	2 mV
Modes	Radar pulses at 5000Hz
Ranges	Up to 270km
Power Usage	0.2 W
Transmitter Power Usage	400 W (PEP)
Power Current	4 A DC
Power Supply	24 V DC
Tubes	7xRV12P2000, 1xRG12D60, 2xLD1, 1xLS50
Weight	17kg
Encryption	2x10 bit
Ground Control
Installation Transmitter	Query transmitter Q-Gerät "Kuh"
Installation Receiver	Identification receiver "Gemse"
Other Information
Self-Destruct Device	Yes, short fuse
Weakness	In Summber 1944 Mosquitos were equipped with "Perfectos", which activated the FuG 25a and triggered the response.

The FuG 25a Erstling is an on-board IFF system installed into Luftwaffe aircraft of World War II starting in 1941, in order to allow German radar stations to identify them as friendly.