Show soldered connections important in radio set the first important factor for get ting the bce t results from a receiving set act is soldered connections every point boint should be carefully cleaned and ithen securely soldered antenna joints should be carefully soldered and ti a proper ground clamp installed there thera are at least 22 contacts in a ove five tube set pet which cannot even be sol soldered deret twenty of them thein are tube prong contacts and the hie other two are the battery switch and the rheostat dirt on any one of the aliee e will be a fruitful source of noise many tubes have solder lead alloy on their base bas prongs this solder rubs off onto the bochat Iso Boch clet ct contacts oxidizes oxy dizes and makes j a high resistance noisy connection the battery switch Is often liable to dirty up after being cl cleaned enned the same bamo with tile the rheostat A dirty switch or rheostat contact causes noise in a receiving set |