Unnumbered Page Advertisement 2

Radio Record, Volume V, Issue 9, 11 September 1931, Unnumbered Page

This power valve is noiseless ! ~s MADE BE ENCLAND 0 9 and made better TXIs:_ is the Osram MX.245 Power valve:' Within jts characteristic limits ic gives unparalleled results in all out- put circults-~extraordinarily; distortionless amplification, ample current capacity, and complete freedom from all microphonic noises. It is the only 245 valve in the 2.5 volt range that is noiseless under all conditions of operation: You can test Osram 2.5 superiority at your Radio Dealers. Ask t0 switch on any set; tune out all stations and tap the 224 or 4 227 detector. If it Is microphonic 'the speaker will emit 2 pinging noise, indicative of imperfect reception, Jf the microphonic valves are replaced by Osram 2,55, tapping will result in silence; Ask Your dealer also to show You the fWIC O35m range of Osram 2.5 volt valves MY.224, MY.27, MX.245 & MX,280 2e valves MADE IN ENGLAND Advertisement Qf te britibh GENERAL ELECTRIO CO. LTD 37 Taranaki Street, Wellington; Brunswick Bldge- 49 High Street, Auckland. Hannaford Chambers, 145 Worcester Street, Christ- church: