Monica and Gee systems in Lancaster bombers

Hmm I will have to look for pics of this very interesting

Roughly the centre of the tailfin, on both sides.

radararchive….

with the receiving aerials either side of the tailfin

This is another new mystery one for me. Whereabouts were these located then??

I can confirm that Gee used a whip aerial on top of the fuselage, immediately behind the cockpit (at least was the location with Halifaxes and Lancasters). Monica used arrowhead aerials for transmission located underneath the turret, with the receiving aerial either side of the tailfin.

thanks guys!

So am I correct in thinking that the Gee antenna would be the whip antenna one of the two that are fitted on top of the fuselage and the Monica antenna would be the one below the rear turret and the very aft end of the fuselage? I think there is an error in the manual that I have here.

I don’t know a lot about the aerial systems on the aircraft, but I can guarantee that Monica and Gee were two entirely separate systems. Monica operated on 1.5 metres, IIRC, whereas Gee operated on a much longer wavelength and only required a receiving aerial on the aircraft.

I have a wartime colour trainign film for Monica III, which I’ve not watched for ages, but if you need more details about this equipment, let me know and I’ll have a look at the film and will hopefully be able to give you more specific information.

Hi Peter,

I’ve never associated the Monica installation with Gee.

My copy of the Gee Mk. II A.P. refers to a rod aerial, type 87 or 257, fitted vertically in the fuselage of the aircraft. These were both “whip” aerials. The Halifax III A.P. refers to an aerial type 117, which appears to be another “whip” type.

That said, Boozer and Monica are two devices I know very little about and it’s long been my intention to research them in more detail.

Regards!

682al