Page 7 Advertisement 2

Radio Record, Volume II, Issue 4, 10 August 1928, Page 7

Its the Ola story O6 the ehain Consider every link when you choose radio valves-look for special features _~check correct construction, constancy, current economy, char- acteristics But decide by the filament! upon this vital part depends the value yoL receive for your money_ Demand a big filainent, 1 tough filament 1-2 flament that cannot be broken except by the very roughest handling: THE WONdeRFUL MULLARD P.M. FILAMENT This suprene filament will serve' you a thousand times round the clock: and then con- tinue the same perfect operation as when nlcw_ Obtainable From all good Radio Dealers; Mullard THE MASTER VALVE Mt '~the ALL- BRITISH Valve 1 Fhe Mullard Wireless Scrvice Co. Ltd,, Nightingale .Lanes:. Balbara ,- London, England,