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Radio Record, Volume II, Issue 48, 14 June 1929, Page 3

STILL Britain' $ Greatest Valve- The New Mullard (Mulif;: PM_ Valves wilh the Wundevhul PM: Filament ~SCIENTIFICALLY CORRECT SECTIONAL VIEW OF PM.s VALVE Here' s WHY Two Valves in One Because it has a long filament-_nearly four inches The Mullard Screen Grid Valve 'longheld in two complete loops by resilient filament Ask your local dealer about the supports which keep it in permanent alignment; The wonderful Mullard Screened Grid Radio Valves. One of these new Mul- long_ filament SO held provides an unusually big radio- lard Valves does the work of two ordinary "distance" valves; and owing active area; SO that it i8 capable of handling an unusu- to the enormous amplification factor ally large. amount of energy_ Since the filament is and complete stability it enables You to get all the distant stations, while completely enclosed by the plate, none of this energy tuning is greatly simplified. The Mullard Screened Grid Valves are the can be wasted_conseguently the efficiency of the Radio Valves of the future that YOU can buy now ! valve is extremely high, resulting in Louder and Clearer 30 / = each: Reception: Be' fair to your set. Use only Mullards: In 2, 4 or 6 Volt: Types. Mullard The Mullard A.c: Valves have Arrived AIl types procurable in UX and The New Mullard AC. Valves maintain the reputation of the Mullard Valve, being gcientifically designed ~stronger in construction ~clearer in tone--louder in volume. English Bases from all Radio Dealers: See that your Al1 Electric Receiver is ftted with the following Valves SOLE N;z: SELLING AGENTS: Mullard AC3 (UX226 Type) Mullard Ac4 (UX17IA Typer Mullard 102T (UX227 Type) 4 Super-power Valve for SPEDDING LIMITED For R.F: and LB. amplificatlon. audlo stages: Very suitable for 4 special detector and amplify- AOCKLAND P.o. Box 462 Will give louder and clearer Push Pull circuits where the Ing valve Very quiet In opera- WTLLINGTON P.o. Box 1581 blgnal strength: conetancy of the PM: character- tion, and extremely sensitive: igtics makes matching unneces CHRIS TCHURCE E.o. Box 922 DUNEDIN P.o. Box 516 PRICE 15/- sary PRICE 20 / PRICE 25/- Advt ot the Mullard Wireless Service Co;, Lta,, THE PM FILAMENT CUTS OUT THAT AC: BACKGROUND. Dondon.