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The Fred Jennings Radio Room

Consol - Bushmills MWN Control Unit

 

German developed WW2 Navigation system called Sonne copied by RAF as Consul and commisioned at Bushmills on 266KHz. Range 1200 miles. Accuracy +/- 0.5 degs. One of 5 stations in Europe to provide position derived from intersection of their respective bearings on special charts. Bushmills used 3x325ft aerials in a straight line separated by 3 lamda with the rotating goniometer (in centre of lower part of image) phase shifting the outer aerial signals by +/- 90degs over a period of 1 minute which included the Bushmills identification MWN. Decommisioned in September 1976.

 

The “Fred Jennings Radio Room” at the rear of the main hangar has an exhibition of WW2 era radios.  Some of the commonly used aircraft and ground based radios have been restored to fully working condition. Also exhibited are examples of domestic radios from the same period.

 

Consol - Bushmills MWN Control Unit

T1154 Transmitter

 

T1154 Transmitter along with companion R1155 Receiver was standard fit for British bombers such as the Lancaster during WW2. Frequency Ranges 200-500KHz,3.0-5.0MHz and 5.5Mhz to10.0MHz

 

 

R1132 Receiver

 

R1132 Receiver - continuous coverage 100MHz to 125MHz.Early version of VHF rack mounted airfield based receiver for VHF ground to air communications.

 

R1155 Receiver

 

R1155 Receiver – Airborne (and Naval versions) receiver used in conjunction with T1154 transmitter.  General communications receiver coverage to 18MHz also equipped with Direction Finding circuits using “loop” and “trailing” aerials with the direction displayed on external “Left / Right” meter.

 

T1154 Transmitter R1155 Receiver R1132 VHF Receiver

AR88 Receiver

 

AR88 Receiver – AR88D manufactured  by RCA in US and AR88LF in Canada. One of the best communications receivers of WW2 and for long afterwards. Renowned for stability and reliability but extremely heavy which lead to it and this class of receiver being known as “Boatanchors”.

 

Westinghouse Fan Marker Model TFM

 

Fan Marker Transmitter Model TFM operating on 75MHz with signals beamed skyward on approach path to airfields to enable aircraft to determine range from runway.

 

BC221 Hetrodyne Frequency Meter

 

BC221 Frequency Meter carried in B17 and B24 aircraft -coverage 125KHz to 20MHz. Many of these frequency meters were used post WW2 by radio amateurs for receiver/transmitter frequency calibration

 

AR88 Receiver Westinghouse Fan Marker - Plate Westinghouse Fan Marker BC221 Hetrodyne Frequency Meter

LM10 Hetrodyne Frequency Meter

 

Used by the US Navy for receiver/transmitter frequency calibration.Similar to the more common airborne BC221 Frequency Meter.

 

Eddystone 640 Receiver

 

General coverage HF communications receiver – early version from a range of an excellent standard valve receivers manufactured by Eddystone.

 

Bendix BC778 “Gibson Girl”

 

German developed “Notsender” NS2 captured and produced by Bendix for the USAAF as a downed aircraft / dingy rescue transmitter BC778 operating on 500KHz at 4.5 watt output to a kite flown aerial. Nicknamed by the USAAF as “Gibson Girl” because of its shape.

 

LM10 Hetrodyne Frequency Meter Eddystone 640 Receiver Bendix BC778 Gibson Girl Fred at Radio Room Door - web Radio Room - web Radio Room with Visitors - web

Fred Jennings in the doorway of the Radio Room

 

A retired RAF radio/radar specialist, he's custodian of the room and worked hard to make it all happen.