Working Instructions. Wireless Set Burndept, C.N. 348. WO 1590 - Engeland Voorschrift Working Instructions. no.2. Wireless Set no.38, MK 2, Airborne Station (for (1) Parachutes (2) Gliders). WO 1070 - Engeland Voorschrift Working Instructions. Training Set W.T. Mks. 2, 2* and 3. WO 1526 - Engeland Voorschrift Working Instructions. no. 1. Wireless Set no.38. Mark III. WO 1073 - Engeland Voorschrift Working Instructions. Wireless Sets. no.38. MK. II or MK. II* in Churchill I, II, III and IV Tanks. WO 1072 - Engeland Voorschrift