Useful Hints
HON reaction seems much tod strong and it is inconvenient to take off turns from the réaction winding, and adjustablé condenser 6f about 0002 mfd. placéd between the anode and filament of the detector valve to ct as a by-pass may be of assistance OR very. fine adjustments of tuning of reaction it is always an advantage to turn the dial by its outer rim. AN easy method of removing the layer of seale on a neglected soldering iron is to heat the iron until ft
is almost red-hot and plunge it swiftly into cold water, when the deposit will flake off. "TERMINALS should never be filed over a panel where variable condensers are mounted, or the dust may get on to the vanes of the variable condensers and cause éhdless trouble.
LArcer dials give much finer adjust: ments than small when held in this way, and it is often advantageous to fit a large "tuning" dial to a teaction condenser Which normally has a small dial. NE disadvantage of dirty surfaces and poor heat from the soldering
iron is that you are liable to melt adjoining ebonite, ete., through failure to get a quick joint. Jr your soldering iron is not propertly heated when solderitig to terminals on a transformer or similar component, you may melt the connections inside the instrument and find it extremely hard to renew them. ¥ the flux from a neéwly-soldered joint is wiped while it is hot jt comes away cleanly, but if left until tool it becomes sticky, and it is fmpossible to remove it from the underside of wires, ete. NB of the greatest disadvantages of soldering flux left behind around a joint is that dust will settle upon this in time, and so make a conductive path which may destroy the advantages of correct insulation. {LECTRIC soldering irons are. very convenient, but as they aré not quite so robust as ordinary ones, should bé handled caréfully and not banged against anything or the héating éle ment may bé injured.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19320701.2.65
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Radio Record, Volume V, Issue 51, 1 July 1932, Page 31
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339Useful Hints Radio Record, Volume V, Issue 51, 1 July 1932, Page 31
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