Unnumbered Page Advertisement 1

Radio Record, Volume IV, Issue 5, 15 August 1930, Unnumbered Page

Ova18 Made in England The IOrlds cconomy all-purpose valve SPECIFICATIONS : Fil, Volts 4.0 mar Ril; Curzent 0. 1 amp. Place Volte 4 150 max Amp. Fector 15 Kmpedance 8,500 obms Normal Slope, 1.77 ma / volts Equivs 44 :0 A409, A415 In every way L4lo costs 1 you less. It is lower in price: It consumes only one-tenth of an ampere and makes your 'B" Battery last longer; The filament is coated in a special manner, thus prolonging its life to an appreciable extent. You can use L41o in any 4-volt battery-operated set for Radio frequency amplification; as 3 detector; or in the first audio stage. Your dealer can advise you which Osram Valve you need ~ he knows all the equivalents If he should not have in stock the Osram Valve you need, it will be sent direct; Safe 6 6 delivery guaranteed. The Osram Valve Guide Ser a useful little book detailing all Osram Valves tn is free for the asking: Advertisement of the British General Electric Cs. Ltd, Branch Office and Public Showvrooms 31-37 Taranaki Street, Weltington E5