Research into radio frequencies is carried out at a centre in Slough.
Mr. Ashwell working inside the hut which measures the direction of radio signals. Mr. Henderson and Mr. Fletcher inside laboratory working frequency measuring equipment which is recorded on tape. Mr. Fletcher walks over to Dr. Pressey who is working out the frequency at a table. LS. Radio research station. LS.MS. and night shots of hut housing signal direction detector equipment. LS.MS. carrying aerial for frequency measuring equipment. (Orig. Neg.)