WildCat FM /technical station. For a clean electric wave and a good sound (special volume addendum 1)
About BROADCASTER, the thing sent at a standard level of a correct sound is a natural thing.
Does your bureau know width and the quality of the electric wave to
the sound that I have emitted though the thing with an important
thing sent at a standard level of a correct sound before it says of
commenting on tone quality is described in detail on the page of the voice level calibration sound source.
Width of electric wave that mini FM station has output The maximum values of the sound (100% modulation) in the frequency modulation broadcasting of Japan are several 150KHz The electric wave of FM makes the sending frequency change up and down according to "FM=Frequency Modulation" voice signal as its name suggests and transmits the voice. "It is best and paddle sound" will have gone out at this time by the translation that the range to make the frequency of the sent electric wave change says 150KHz (100% modulation) in the maximum. Because the reception side (FM tuner etc.) is made from this standard in addition, because the width of the electric wave exceeds the range of the standard even if it is thought that "Paddle sound" is output, the sound is distorted. It is necessary to maintain the range called several 150KHz in this maximum value with to broadcast because of a good sound. Frequency Deviation 150KHz before reaching the volume that the commercial broadcast bureau has output because the quality of the electric wave is bad for the stereo transmitter for mini FM and the width of the electric wave is wide. It is necessary to note it because the sound not only is distorted but also the band extends and the trouble is caused to the adjacent channel if it turns up the volume forcibly. bandwidth when it tried to output the same volume from the speaker with the transmitter for typical mini FM was compared with the transmitter of a straight broadcasting standard, and see even gooseflesh, please while setting The signal of 1000Hz is put in L+R of a straight transmitter, and several
Frequency Deviation makes, receives the signal of this time by the WIDE band of FM
tuner, and assumes 150KHz =(100% modulation) with the standard at the audio
level.
I think that the thing that the skirt of the electric wave has extended at random when comparing it with a straight transmitter is understood. In seeing this screen and cool, what am only I ? As for the occupation band of TR-10RDX, to become 194KHz, and to put out the same volume as 122.6% and 129.3%, TXS80PLL becomes a great overmodulation by 184KHz in the measurement. Before it says of commenting on the measurement result of the occupation
band if you see the image Though it is thought that it is understood that
the width of the electric wave diffuses in Yabai even if the ape sees.
The following image is the one when the signal of 1000Hz is put only in L-ch. The occupation
bandwidth changes because the condition becomes severe at time when the signal was put in both channel
The thing that the width of the electric wave has extended obviously is understood though TXS80PLL is displayed with TR-10RDX and 182KHz in the occupation band measurement mode of Spectrum analyzer as 185KHz. The condition deteriorates further when a complex music signal is input though the above-mentioned measurement screen is due to a single signal of 1000Hz. It applies from a basic circuit composition to the transmitter that the "99%" your bureau where the Yabai signal to which the electric wave similarly diffuses almost is observed from the transmitter that has started in life for mini FM is using. Recently, the model that uses LSI said that the sound is good is to our regret the same. The screen is seen in width that 1MHz is wide, and the noise region is terrible complete observation in TR-10RDX and TXS80PLL. The range of 1MHz is displayed, and please review again and look at the thing on the screen of this measuring instrument. It might be what how though thinks that it is a quality of the electric wave really permitted because it is a slight electric wave of about 1-10mW. ??? 'toriatama' though thought that the thing can be physically understood even from impossibility in a toy transmitter even if it tries to output the volume that the commercial broadcast bureau has output if the above- mentioned screen is seen. The sound not only is distorted but also the band extends, it becomes only a mere jamming wave generator that causes the trouble to the adjacent channel, and this is a transmitter that you are using if it turns up the volume forcibly. It seems that it is a natural thing even if there are a point and a criticism with low technological level from a poor quality of the electric wave of mini-FM on a part of Web site. Knowing this current state is used and the thing is and there is already no method because your technological level is low no matter what it is said...However, Germanic peoples are the expression, and are 'Nyaaatsu. in breaking out of a doubtful technology and the experience, it is not in happening
of to intra band and the side because of the electric wave that you who
thinks that it was able to understand a little have output strong, and because the
band diffuses extremely badly, the quality of the electric wave is Cab on the side.
Think about the quality of the electric wave if you think that you want to output a
little strong electric wave.
Genuine transmitter and only several thousand yen of broadcasting standard. Toys of tens of
thousands of yen are compared and how many. Knowing this difference thinks and one step and we
of the start to the technological level improvement think about though it seems to be said. It
is possible only as a technological level is low even if passing until what time if the
difference is not understood. It is in mini FM only of the far repetition of straying before
putting out the electric wave by a low dimension.
I wait with mail for a technical question and the complaint, etc.
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2004/04/22 last modified on 2005/09/20
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