PORTABLE RADIO HOLIDAY SET from 1931

PORTABLE RADIO HOLIDAY SET.

From the Ellesmere Guardian, Volume XLV, Issue 3179, 23 December 1927, Page 6.

The set mentioned in these notes a couple of weeks ago has been on test during the last week and excellent results have been obtained which should be of interest to holiday makers and week-end camping parties. With set as supplied, that is, with self-contained loop aerial, the following results have been obtained:—lYA Auckland, 2YA Wellington and 3YA Christchurch at excellent speaker strength, and the tone even when 3YA signals were at full power proved excellent. With the head phones plugged in three Australian stations were heard at excellent strength, namely: 2FC, 2BL Sydney and 4GG Brisbane, while Auckland and Wellington signals were deafening. With the D.X. (long distance) coupler, supplied with the set, the results obtained were certainly of the Al class. The following stations were heard on the self-contained loud speaker: 2FC, 2BL Sydney, 4QG Brisbane, and the three New Zealand stations. All these came in strongly and clearly and without the slightest trace of distortion, and with quite as good a volume as that supplied with the ordinary standard five-valve set. On the phones the following were heard: 3LO Melbourne, 7ZL Hobart and 2GB Sydney. For a portable set only 241bs in weight and in size not much larger than an old-fashioned box camera, the above results are truly great and have to be heard to be fully appreciated. The cabinet is finished in black leather and measures approximately 14in. by 12in. by 10in., with carrying handle on top. The B Battery supply consists of 90 volts, being made up from two small-size Burgess 45V units that fit snugly into the left hand corner of the case. In the right hand top corner is the A Battery made up of 3 No. 6 Burgess marine batteries and small but extremely efficient loud speaker, with a Baldwin reproducing unit. The under portion of the set is where the necessary transformers, valves and condensers are housed. The panel is very small, measuring 14in. wide and 4ins. in height and 10 inches in depth. The panel is of very neat layout. The centre is taken up with the tuning dial, which is of special vernier adjustment. Directly above are the two plugs for the loop aerial. On the right hand side is the volume control and plug for a second loud speaker, while on the left hand side is the filament control with the on and off switch for both A and B batteries. The valves in use are UXI99 radiators with 90V on radio and audio sides and 45V on detector. There are two stages of radio one detector and two audio. The tuning condenser is of special design and the tuning very critical. The valves are mounted in special anti-microphonic sockets and vibration is practically nil. The front of the cabinet, which acts as a cover for the front of the cabinet and controls, has the small frame aerial housed within it, and this plugs into a special adapter fitted into the top of the cabinet, and with this in position the set is ready for the results listed above. The complete radio goes by the name of the “Travler,” which name suits it admirably, arid the circuit complies with all the Government regulations, so purchasers of this remarkable piece of radio craftsmanship will have no trouble whatsoever in obtaining the necessary radio license which would have to be of the portable variety As readers will see by advertisement elsewhere, Broadcast Reception Ltd., of Cashel street, Christchurch, are the distributors for this unique radio set and intending purchasers can arrange demonstrations with this up-to-date Christchurch radio house.

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