2 boxes of Radio kit components and many boxes of valves.
Marconi triode valve A2; Type no. PT240
Triode valve Western Electric 4215A
Marconi triode valve A4 Type no: DEL HO
Thermionic valve Marconi triode valve HL210 c.1931
Philips triode valve FA9 Type no. E415
Marconi triode valve A10; Type no. S625; Final S.S. valves
Clarion triode valve A15 Type no. VS2 (DG)
British Thomson-Houston Company triode valve. Type B5
British Thomson-Houston triode valve A17 Bb?
Duval triode valve FA23 Type no. 201.A
Thermionic valve, triode, manufactured by A. C. Cossor Ltd, 1924, A26; Type no. PL; red capped
Marconi triode valve A27; Type no. R
Marconi triode valve A28; Type no. DE5
Marconi triode valve A29; Type no. R
Thermionic valve, triode, manufactured by A. C. Cossor Ltd, 1927, A30; Type no. Primtime
Edison Swan Electric Co. triode valve, A32; Type no. AR.06
Marconi triode valve, A34; Type no. DE8HF
Philips triode valve FA38; R type, no cap, (?) leads, Damaged/fragile box
Marconi triode valve, A41; Type no. V24
Mullard triode valve, A42; Type no. PM12; Tetrode
Western Electric triode valve, FA43; Type no. 4102D; probably telephone
Standard triode valve (STC), A44; repealing valve
Siemans triode valve, FA45; Type no. B. O.; small (?refer to accession file?) R type
Marconi triode valve, A46; Type no. DEL612
Triode valve, A48; experimental R - type, no cap, pip lip (?)
Philips triode valve, FA49; E442; screwing missing
Marconi triode valve, A50; Type no. P215
Loewe triode valve, FA36; Type no. 3NF, Multiple valve - (?)
Mullard Pentone Valve, A54; Type no. PM24D
Marconi triode valve, D2; Type no. ETI; Electrometer triode
Marconi triode valve, D11 Type no. VT6V, GPO No 234 special triode litephone?
Marconi triode valve, D79 Type no. DET5 large triode
Triode valve, D32; D - Industrial & special power valves, Possible experimental 2 anode diode - more research needed
Thermionic diode valve, D31
Marconi Osram thermionic diode valve
General Electric miniature cathode ray tube, Type E4103/B/4, ref no. B4
EMI photomultiplier tube, type no. 9708KR
Brimar photomultiplier, B5; Type no. 931A
Cathode ray tube Tv CRT gun assembly with ion trap
Tung-Sol VHF triode A59 Type no. 703A
General Electric US Navy 'lighthouse' triodes. Type no. 446B (Could be A, mistake on reference sheet?)
Marconi catkin triode valve, A58; N30
Philips Miniwatt diode valve, AB1 577
BAL pentode valve - navy, 43/41 119442
Philips valve KB2 / O38
General Electric triode valve GL. 464A 19H4, FA64; US Navy 'lighthouse' triode
General Electric triode valve US Navy 'lighthouse' triode 446 - ?
Telefunken triode valve, Armed devices valve
RCA transmitting valve; National Company C7; carbon anode
Philips transmitting valve C8; Type no. 4646
Transmitting valve C9; Type no. VU508
Transmitting valve C10; CV121
Mazda triode valve PP3/425
Mazda pentode valve SP 41 from National Valve Museum: The SP41 is an amplifier pentode with external metalisation as shielding. The original design was from Mazda, and other manufacturers copied this successful design after it had become established. The demand for efficient video pentodes for TV came a year or two earlier in Britain than elsewhere and the SP41 was Mazda's solution. Shorter leads to shorter pins, and compactness in general, are essentials where high gain-bandwidth product is a requirement.
British Thomson-Houston Mazda valve
U65/550
