This impressive item was described at the meeting. Photo courtesy of the APSS website. 

At the LRS meeting on 31st October 2012 Bob Thomson described the collection of Radio, Radar and Avionic items looked after by the Aviation Preservation Society of Scotland (APSS). The collection consists of items belonging to the National Museums of Scotland (NMS) as well as items owned by APSS. They are based at the National Museum of Flight at East Fortune in East Lothian and are open to the public every Wednesday during museum opening dates. 

Click for full report.  See also the APSS website.