![Vic Jay on Twitter: "77 yrs ago today, 23rd April 1942, H2S, the 1st airborne ground-scanning radar system, performed its 1st experimental flight. The radar was mounted in a #Halifax bomber. It Vic Jay on Twitter: "77 yrs ago today, 23rd April 1942, H2S, the 1st airborne ground-scanning radar system, performed its 1st experimental flight. The radar was mounted in a #Halifax bomber. It](https://pbs.twimg.com/media/D40K4MEXsAACcmV.jpg)
Vic Jay on Twitter: "77 yrs ago today, 23rd April 1942, H2S, the 1st airborne ground-scanning radar system, performed its 1st experimental flight. The radar was mounted in a #Halifax bomber. It
![An RAF Avro 683 Lancaster Parked with H2S Radar, Built by the Austin Motor Company, Longbridge, Stock Photo, Picture And Rights Managed Image. Pic. MEV-11950216 | agefotostock An RAF Avro 683 Lancaster Parked with H2S Radar, Built by the Austin Motor Company, Longbridge, Stock Photo, Picture And Rights Managed Image. Pic. MEV-11950216 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/905b1f357245d442b4ad0f659660b297/mev-11950216.jpg)
An RAF Avro 683 Lancaster Parked with H2S Radar, Built by the Austin Motor Company, Longbridge, Stock Photo, Picture And Rights Managed Image. Pic. MEV-11950216 | agefotostock
![VERY RARE! FEB 1945 OVERPRINT H2X-Equipped B-17 WWII Radar Plotting Chart - VIII Bomber Command B-17 Navigator Bomb Raid Mission Map — Premier Relics VERY RARE! FEB 1945 OVERPRINT H2X-Equipped B-17 WWII Radar Plotting Chart - VIII Bomber Command B-17 Navigator Bomb Raid Mission Map — Premier Relics](https://images.squarespace-cdn.com/content/v1/5e4174b6686d8a11f786f7ac/1651760406351-ZBZ1W4EV75ILF34WHCTE/H2X_installation.jpg?format=2500w)