Trade Developments

Radio Record, Volume III, Issue 10, 20 September 1929, Page 35

Trade Developments

Rodéers Batteryless Radio F this popular line of A.C. receivérs ‘there are a wide variety of models, but all maintain a distinctiveness particular to’ their’ line. , The consoles offer a wide choice of designs, and are an asset to the furnishing of any Toom, The set itself is a very fine one, embodying as it does the five pronged A.C, valve. Rodgers have manufactured their own valves, and have long chosen the cathode type for all stages except the last, Here the valve is suited to the purpose, but the Rodgers No, 15 or 245 type is most popular. This valye has been fully discussed elsewhere in this number, Another feature is the automatic voltage control which taaintains unifotm voltage on the filaments of the vaives-and this is essential, A gramophone pick up can be easily added, and the audio stage of the receiver converted into ‘an amplifier. A distinctive feature is a regéneration pystem which, as those who are familiar with circuit design will know, incréasés both sensitivity and selectivity. line of receivers has been designéd in Canada, and is manufactured. at Toropto. A. BR. Harris and Company, Christchurch, sare the NZ, agents,