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GBR - Eureka (radiomaják -odpovídač / přehled verzí)

EUREKA (Radio beacon - Transponder / overview version)

Beacons Eureka

Beacons "Eureka" - "Rebecca" formed a system which was created for radio navigation security operations to assist in the provision of "air" supply for units of the british army and in particular resistance groups in occupied Europe during the second world war.
The advantages of the system to be used also Velitelsství special operations (Special Operations Executive - SOE).

Later the system expanded for guidance to the combat area or on landing "without sight" for the majority of aeroplanes of the Allies.

A) Ground station - "Eureka"
The ensemble excelled particularly simple design and operation - low weight, battery power and inverter. Part of the transmitter was keying unit, providing a coded morseznačku for identification.

B) on-Board station - "Rebecca"

an Overview of the versions of the ground stations:
1) Eureka Mk I. (r 1941)
The designation RAF: TGRI 5508 (TR 3164)
Antenna: type 157
Frequency : 213 Mc/s (MHz), 1 channel

2) Eureka Mk. II (1943)
The designation RAF: TGRI 5509 (aku),TGRI 5666,
TGRI 5720 (TR 3174; TR 3558)
Antenna: type 304A
Frequency : 214 - 234 Mc/s (MHz), 5 channel

3) Eureka Mk. IIF (1943)
The designation RAF: FGRI 5596 (TR 3559)
Antenna: the type 350
Frequency : transmitter: out 196.5 (Mc/s (MHz), the Receiver 193 Mc/s (MHz)

4) Eureka Mk. IIIA (1943)
The designation RAF: ARI 5648, TGR 5671 (TR 3593; TR 3514; TR 3563)
Antenna: ?Frequency : 214 - 234 Mc/s (MHz), 5 channel

5) Eureka Mk. IIIB (1943)
The designation RAF: TGRI 5527, TGR 5714 (TR 3593; TR 3514; TR 3563)
Antenna: type 305
Frequency : transmitter: 216,5 Mc/s (MHz), the receiver 213,5 Mc/s (MHz)

6) Eureka Mk. IIIC (1943)
The designation RAF: ARI 5687
Designation of the USAF: AN/PPN-2 (RT-37)
Antenna: AS-73
Frekcence: 214 - 234 Mc/s (MHz), 5 channel Mc/s (MHz)

7) Eureka Mk. IIIT (talking)(r. 1946)
The designation RAF: TGRI 5643 (TR 3593)
Antenna: ?
Frequency: 213,5 Mc/s (MHz),

8) Eureka Mk. H (1944)
The designation RAF: MGRI 5591 (TR 3529; TR 3579)
Antenna: ?
Frequency : 214 - 234 Mc/s (MHz), 20 channels

P.With.
Ground "airborne" beacons are referred to as "the american Eureka"
-AN/PPN-1; AN/PPN-1A
-AN/PPN-2
-AN/TPN-1 (Big Eureka")
-AN/TPN-3

Sources: https://home.btconnect.com/gmb/ari.htm
www.qsl.net.
URL : https://www.valka.cz/GBR-Eureka-radiomajak-odpovidac-prehled-verzi-t125946#427411Version : 0