Improving a Portable

Radio Record, Volume VIII, Issue 26, 4 January 1935, Page 43

Improving a Portable

4t 18 a Well-known tact that the range and volume of a portable set can often be considerably increased by connecting it to an aerial and earth; most portable sets have provision made for connecting aerial: and earth in this way when required, As a rule, it is. a comparatively simple matter to get a suitable aerial because this may consist of a length of wire strung round the room or laid in the picture rail. The earth connection, however, sometimes offers a difficulty, but this can very easily be met by using, so to speak, another aerial, only this time laid around the floor of the room-a sort of counterpoise earth. The upper length of wire will be ‘connected to the aerial terminal of the’set and. the lower one to the earth terminal, If this is not convenient good results can sometimes be obtained by using a coil of wire placed on the bottom of the cabinet. . In addition to increasing range’ of volume, it will generally be found that using the extra aerial and earth-par-ticularly the latter-will have the effect of stabilising the working of the receiver and may in some cases also amprove the tuning.