Helpful Hints

Radio Record, Volume III, Issue 19, 22 November 1929, Page 31

Helpful Hints

ONE advantage of square wire for sets building is that it offers a larger surface for screw-down connections. WHEN a set has to be used in a . rather dark corner it is not a bad plan to arrange a flashlamp bulb near the tuning dial, with a simple switch which puts it on when required, WHER joints are inevitable properly soldered’ ones must be used, for twisting wires together is certain to lead to trouble with bad contact. , For good quality loudspeaker work a@ power valve, or preferably a super-power valve, must be used in the last valve socket. '

ONE advantage of using a small. aerial is that you will stand a better chance of picking up foreign stations than when a large aerial is being "swamped" by a nearby transmitter. ALUWAYS bring the lead-in from the aerial straight to the set where it is possible to do so, so as to keep the aerial and earth leads as short as possible, [NSUFFICIENT high-tension voltage is the commonest cause of indifferent reproduction.

'F you use one of the three terminal fixed condensers, be certain that you wire it up the right way, as although it may work when connected wrongly, results will be very inferior to those obtainable under the correct conditions, HEN mounting condensers, ete., in rather inaccéssible places, remember it is often an advantage to put the leads in place and screw them down before fixing the component in position,