As for local satellite bureau and community FM, accuracy is somewhat inferior though the good one is a current state in the transmitter that a major broadcasting station is using from 1 to 2 digits. interrupting the standard about the misund erstanding that doesn't break out even if it is said that accuracy is inferior.

Even if a major broadcasting station shifts within 100Hz, satellite bureau and community FM shift in the maximum within 500Hz and confirm +/- 450Hz about +/- 50Hz by actual measurement of me.
 

it doesn't become a comparison no matter how it is called PLL because the transmitter for mini FM is a toy moderate as for the price. Only the frequency accuracy of extent to which the problem doesn't occur on the reception side and it exists. On the inside, having has seen the thing that shifts by as many as 25000Hz as for an inferior thing.
The problem is caused in the reception if shifting by 10000Hz or more.
 

spurious strength :it is with 60dB or less from 1mW or less.

I understand as -60dBm though it is thought that it changes by interpreting dB for this, and that is well-grounded in the thing called 60dB or less from 1mW or less.
When it is this standard, spurious when the output of 1KW is output becomes in 1mW at -60dBm and spurious when the output of , 10KW is output becomes 10mW in -60dBm as it is not very related, and doesn't admit outputting by spurious strength of 1mW or more.

it will be called 1mW or less, and when the output of 1KW is exceeded in Radio Law, spurious should secure spurious 70dBm to put out the output of 10KW and clear the severe standard called 1mW or less.

The garbage of the electric wave is not very related, and when it is not 1/1.000.000 or less, doesn't become -60dBm or more about the output for the output of 1KW or less.

This standard is not in the standard in the transmitter unit and is an integrated standard including the antenna etc.
 
 

Harmonic and Spurious

The harmonic component is a garbage electric wave launched higher- order as said to twice, three times, and four times the launched electric wave.

Spurious is a garbage electric wave launched by the frequencies other than the transmission electric wave. The garbage electric wave observed by the frequencies other than the harmonic component is called Spurious.
 

The transmitter for mini FM also has the thing to which an original output is weak, and it is extremely a current state of rough for the harmonic component and Spurious, and surprising large amount garbage electric wave is observed when seeing with the measuring instrument.

Physically, the amount of garbage is many reality from a certain professional transmitter to 1/1000 the output as much as 1000 times the outputs when which says the transmitter for mini FM

Because it is permitted because a slight electric wave in the truth This electric wave is amplified, and it becomes a mere jamming wave generator.

Pilot signal frequency precision: Within 19000Hz +/- 2Hz
This can understand explaining the unnecessary pilot signal accuracy from the thing within +/- 2Hz.

pilot signal phase allowance deflection :Within +/- 5 degrees

it is described in the inspection metrology of the transmission equipment, and it exists in the item called the frequency of the subcarrier for the stereo and the phase of the pilot signal though it thinks the understanding of this to be a considerably difficult.
it is a gap of the phase of the subcarrier and the pilot signal of 38KHz, and this gap is restricted within +/- 5 degrees of . When the gap of this phase happens, Separation of the stereo is extremely deteriorated.

A terrible thing : in the previous world for each equipment that shifts by a lot of seen 40 degrees or more. To our regret, it doesn't meet the equipment that clears this standard with mini FM transmitter. The thing that phases it is not done from the remark and the circuit doesn't exist either.

pilot signal Deviation bias Range :8-10% of 75KHz

To our regret, I am not meeting the equipment in this standard with mini FM transmitter as for this. Because the pilot's recognizing it to not being becomes sweet by the fact that the pilot signal in case of mini FM transmitter is clean, this extremely invents the rough sledding seeming the setting at an over level of about 15-30% to Deviation of +/- 75KHz. Because "Omake" called band diffusion in the interference beat in addition to the vicious circle said that the sound will become impure by generating the interference beat with the audio signal adheres because the level of an impure pilot signal is high, the sound is extremely distorted to the tuner on the reception side by the distortion's occurring.

it seems that the level of the pilot signal is raised to recognize the stereophonic broadcasting, and because the vicious circle is caused when the signal purity is low, is needless to say to the thing whose lowering to the limit is an effective method.

subcarrier suppression of the remaining of a main signal carrier Deviation :Within +/- 75KHz of 1%

it is a career suppression of the subcarrier of 38KHz by +/- 1% or less of 75KHz Frequency Deviation of the cycle of a main signal carrier by remaining of the subcarrier on the inside.
Several measured Frequency Deviation becomes when several happening Frequency Deviation does main signal carrier Frequency Deviation +/- 75KHz because of the leakage of the subcarrier of 38KHz to turning off the pilot signal by 1% or less and 0.75KHz or less becomes 40dB by the thing suppression of the sub career of 38KHz
 

integrated frequency response (50us/Pre-emphasis is included.):[Refer to the characteristic table of Pre-emphasis]

This is a frequency response where the sending system such as mixers is included. That is, it will be said the frequency response of the sound that goes out over the air from the mixer at the entrance of the sound. The tolerance is provided from the ideal characteristic of Pre-emphasis
 

Level difference between the left and right signal  :1.5dB Within (100Hz - 10KHz)

Though it thinks a right and left level difference to be able to understand from the thing This also will say the frequency response of the sound that goes out over the air from the mixer at the entrance of the sound like the above-mentioned, and when the error margin with a little connected equipment comes in succession as well as the standard of an integrated frequency response, standard interrupt.
The calibration at the voice level becomes a critical factor because of the standard maintenance.

Total distortion
     50Hz - 10.000Hz 2%
 10.000Hz - 15.000Hz 3%
Frequency Deviation of +/- 75KHz

Because it is a thing called total Deviation of the sound that goes out over the air from the mixer though it is an unbelievable place, and a bad numerical value judging from a present audiovisual apparatus, I actually think that it is a considerably severe standard and it exists.

it is difficult for the transmitter connected at the end to clear the standard of "Yabai" no matter how the sound is emitted from high-level audio equipment for the mini FM station.
 
 
 

Compared with signal vs. noise    :55dB or less(To Frequency Deviation of +/- 75KHz with audio 1KHz)

Compared with S/N after this also ties all equipment like the above-mentioned
 
 

Residual amplitude modulation noise   :-50dB or less

in the one that the ratio of the AM signal included in FM electric wave was provided, it has the AM signal generated from FM transmitter it doesn't have the meaning with -50 the dB or less in the standard because of a no sound though it restricts though being included in the standard of the sound system is mysterious.

it seems not to be significant in case of not being normally because of the amplitude modulation noise to Frequency Deviation of ( +/- 75KHz).

There is an equipment that the AM signal detects when the sound is put when the electric wave is an equipment that blurs and contains the AM signal in length, and a transmitter for mini FM by the noise generated from VCO. Do though it is also strange that the AM signal is observed though it is FM transmitter?

Right and left separation level    :30dB or more (To Frequency Deviation of +/- 75KHz with audio 100Hz - 10KHz)

it becomes considerably severe because it is a standard in each frequency cooking stove, and it becomes difficult in the frequency in the vicinity of especially 10KHz though it seems that it is not 30dB in a wonderful standard.

Most equipment cannot clear this standard even by a low region for the transmitter for mini FM in an upper and lower frequency because it receives the obstruction of PLL.
 
 
 
 
 
 
What is the Ideal FM transmitter
What is the Quality of electric wave
a basic part of a standard electric wave /Pre-emphasis