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Radio Broadcast
Q 0 A
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FIG. 6
Showing arrangement of units on the base
that one third portion of the panel on which the tuning elements are mounted be protected in this way. The shield is connected to the case of the Ballantine Vario transformer under the clamp which holds both the transformer and the shielding in place. The shielding is not grounded.
RESULTS
THE set, as shown in Figure 4, is the best dry cell equipment that ever has been brought to the attention of the writer. It is
remarkably sensitive, and will bring in distant stations on the loud-speaker. During comparative tests in New York City, Chicago was received on this little set, with greater intensity than on one of the most efficient regenerative receivers made. The regenerative set was using storage battery tubes, detector, and two steps, with one hundred and thirty volts on the plates of the amplifying tubes. The reflex set employed the same number of UV-IQQ'S, with a plate voltage of forty-five.
The second stage of external amplification is never necessary for loud-speaker reception of local signals, and, in the case of the \JV-\gg, which is limited in the amount of power it can handle, will give only a slight additional amplification, and will probably distort signals.
The possibilities of this remarkable little set as a portable receiver need no delineation. Its senstivity is such that it will operate on the most makeshift of antennas, such as 125 feet of wire thrown over the limb of a tree (a good ground, however, must be used), and the necessary batteries add but little to the bulk and weight.
If You are Thinking
Of submitting an article to RADIO BROADCAST, you may save yourself and the editors time and trouble by considering the following notes as to what we want and what we cannot use:
WE WANT:
True accounts of the uses of radio in remote regions.
Short, true stories of adventures in which radio played an important part: unusual and interesting occurrences to you or your acquaintances.
Clear explanations of new or especially effective circuits or uses for apparatus.
Concise and logical discussion of some important problem or phase of radio, whether in the field of broadcasting, constructing, operating, buying or selling; or of reading or writing that has to do with radio.
True accounts, of some particular interest, relating "What Radio Has Done For Me."
Humor, when the object is not merely to appear funny, but to present some phase of radio in an attractive, amusing way. The same applies to drawings.
Clear, unusual photographs are always in order, as are good circuit diagrams.
A liberal rate is paid for material used.
WE CANNOT USE:
Fiction, unless it deals in a striking way with some subject of interest to those interested in radio. Articles or illustrations to which RADIO BROADCAST would not have the exclusive rights. The best way to do is to read several numbers of the magazine to get an idea of the various kinds of articles we publish.