Motor-Boating

Radio Record, Volume III, Issue 8, 6 September 1929, Page 27

Motor-Boating

a ---EEEEEE. Condenser ‘and Resistance Cure ; HAVE perused with! interest your article in "Record" of 16th inst. on "Motor-Boating" and the cure thereof. Before proceeding any further I would like to say that in my opinion one of the fascinating features of radio is the number of ways one can ‘do a thing wrongly before striking the correct method. Still, it is rather horrible to think of anyone with a set afflicted ,with motor-boating quietly wading through all the scheme and de--tail set out in your article. Motorboating and threshold howl are only interesting in the number of things one can do without curing them, and I am of opinion that the whole of the schemes set out in your article come within this category. Motor-boating and threshold howl can both be cured by placing a 20,000 ohm wire round resistance in the detector power lead before it gets to the transformer and bypassing the set end of the resistance to earth with 2 mfd. condenser. I have my information from an English .magazine, "Wireless Constructor,’ and I have tried the scheme and found it entirely successful-curing motor-boating

and the threshold howl on both short wave and broadcast sets. The value. given of resistance and condenser. must not ‘be departed from... I ‘have also tried this and find it is. correct. [ might also add that this remedy will effect a cure even when the detector is running on a dry battery and the rest

of the set on an. eliminator-

Diogenes

(Oromwell }

{Our article dealt with resistance capacity coupling, in which case the cure is effective---Technical Ed.]