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An Experimental Continuous Wave Telegraph Transmitter. Now while this extra tube is used as a generator of oscillations these are, of course, very weak and hence a detector tube cannot be used to generate oscillations that are useful for other purposes than heterodyne receptors and measurements.

While a heterodyne, or beat, receptor can receive continuous wave telegraph signals an ordinary crystal or vacuum tube detector receiving set cannot receive them unless they are broken up into trains either at the sending station or at the receiving station, and it is considered the better practice to do this at the former rather than at the latter station.

This kind of a set is called a full wave rectification transmitter. The waves radiated by this transmitter can be received by either a crystal detector or a plain vacuum-tube detector but the heterodyne receptor will give you better results than either of the foregoing types. The Operation of Wireless Telephone Transmitters with Direct Current Short Distance Transmitter.

Our heterodyne or "radio-scrambling" broadcast had gone into operation, emitting impulses of constantly varying wave-length over the full broadcast range and heterodyning the Han communications into futility.

An Experimental Continuous Wave Telegraph Transmitter. Now while this extra tube is used as a generator of oscillations these are, of course, very weak and hence a detector tube cannot be used to generate oscillations that are useful for other purposes than heterodyne receptors and measurements.

This is the simplest type of heterodyne receptor and it will receive periodic waves from spark telegraph transmitters or continuous waves from an arc or vacuum tube telegraph transmitter. In this type of receptor the detector tube itself is made to set up the heterodyne oscillations which interfere with those that are produced by the incoming waves that are a little out of tune with it.

From this you will see that any regenerative set can be used for autodyne, or self-heterodyne, reception. The Separate Heterodyne Receiving Set. The better way, however, is to use a separate vacuum tube for setting up the heterodyne oscillations. The latter then act on the oscillations that are produced by the incoming waves and which energize the grid of the detector tube.

We had to let the beams oppose our oscillations in the metal, where, because the metal conducts, they meet on an equal basis. But when two oscillations of slightly different frequency meet, what is the result?" "In this case, a heterodyne frequency of a lower, and harmless frequency." "So I thought. I was partly right. It does not harm the metal. But it kills the men. It is super-sonic.

If we try to heterodyne his radio presto it has twice the heat energy anyway, though we might reduce it to a frequency that penetrated the ship instead of all staying in it. But by the proposition, we have to use as much energy, and in fact, remember the 80% rule. We've got to take it and like it." "But," objected McLaurin, "we don't like it."

What the Heterodyne or Beat Method Is. The word heterodyne was coined from the Greek words heteros which means other, or different, and dyne which means power; in other words it means when used in connection with a wireless receptor that another and different high frequency current is used besides the one that is received from the sending station.