Unnumbered Page Advertisement 1

Radio Record, Volume III, Issue 50, 27 June 1930, Unnumbered Page

The ivorids economy all-purpOsc valve FicTTONS: FL Velts 4.0 max. F Cenent 0.1 amp: Prt Volt r 150 maxo Kap Pactor 15 Iripedance 8,500 ohmg Notreel Blope, 1.77 ma /volts Equitr B3' A+09 , A415, In every way L410 costs 1o you less: It is lower in price: It consumes only one-tenth of an ampere and makes your "B" Battery last longer: The filament 1S 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 amplifcation, as a 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 delivery guaranteed: The Osram Valve Guide Dan a useful little book detailing all Osram Valves is free for the asking: 03 Made in England Adwertisement 0f the British Genescl_ Electric Co. Ltd. Branch Office and Public Showrooms 3[-37 "granaki Street. Wellington