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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal cross-sectional view of a
microphone of the present invention, and FIG. 2 is a layout view. E · Case, 4 · · · · · · · · Transmitter.
Detailed Description of the Invention Since the microphone of this invention does not use an
antenna wire, it can be used immediately, it can be displayed quickly, and can receive a wide
range of radio waves, that is, the front metal tube il + The rear micro tube 12) is reciprocally
affixed to form a case: 31, and the antenna terminal of the transmitter (4; 4) is connected to the
gold 4 tube (1). Next, the drawings will be described in the following. @ After gold-4 blue 1) 21 is
connected to form an insulator (51 with a rod to form a case · 3), and a microphone · 6I is
inserted at the front end , Set the circumferential surface Hejinochi 171. Put the transmitter (4)
in the forehead metal operator, and connect the metal tube (l: connect the Anna 1t-1 blade). The
dry cell 91 is housed in the rear metal tube 121, and connected to the transmitter 14) via the
switch 7) 1-. Close the switch (7), and hold the money tube: 2); hold the microphone, and the
voice current will be amplified and the radio wave will be emitted from the metal tube l). At this
time, the metal tube effectively functions as a tuning capacitor / capacitor of the output circuit. In
this case, the electrostatic 6 金属 between the metal W1) and the transmitter 4) is about 15 Pr
'and uses a 70 to 80 MHz sh wave radio wave- It is a suitable value. Also, it is formed with two
metal tubes 112, and in use, since it is f: ζ in the stack tube 21: D, transmission antenna effect:
very good. In this case, depending on the surrounding conditions, it may be about a (3 to 10 rice
rows of radio waves to reach the distance). Since the microphone of this invention does not need
to use an antenna cord, it is easy to use, and the combination used on the stage is good in terms
of body structure, and it is possible to allow radio waves to reach sufficiently far. 2−
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