# What Services Use FM?

- 21-Jul-2022
- Education

FM is commonly used at **VHF radio frequencies for high-fidelity broadcasts of music and speech**. Analog TV sound is also broadcast using FM. Narrowband FM is used for voice communications in commercial and amateur radio settings. In broadcast services, where audio fidelity is important, wideband FM is generally used.

### Which travels farther AM or FM?

**FM transmission has broadcast waves ( 88-108 MHZ) that are shorter than AM broadcast waves (540 – 1600 kHz) and do not go as far**. In AM transmission, the amplitude of the carrier waves varies to match changes in the electromagnetic waves coming from the radio studio.

### What is the range of AM radio?

The AM band in the United States covers frequencies from **540 kHz up to 1700 kHz**, in 10 kHz steps (540, 550, 560 1680, 1690, 1700). 530 kHz in the United States is not available for broadcast use, but is reserved for the use of very low powered Travelers' Information Stations.

### Which country banned FM?

**Norway**, in January 2018, was the first country to discontinue FM as a result.

### Is frequency a range?

The frequency range of a system is **the range over which it is considered to provide satisfactory performance**, such as a useful level of signal with acceptable distortion characteristics.

### What frequency range is used for FM radio transmission?

### What services use FM?

FM is commonly used at **VHF radio frequencies for high-fidelity broadcasts of music and speech**. Analog TV sound is also broadcast using FM. Narrowband FM is used for voice communications in commercial and amateur radio settings. In broadcast services, where audio fidelity is important, wideband FM is generally used.

### What is the maximum modulation frequency?

Detailed Solution. The highest modulation frequency typically used in AM broadcast is **5 kHz** because the maximum bandwidth possible is 10 kHz.

### What frequency range is VHF?

This band is commonly referred to as the "Victor or VHF" band. The frequency range is from **118 MHz to 136 MHz**.

### Does modulation increase range?

The modulation process increases the frequency of the signal to be transmitted . Therefore, **it increases the range of communication**.

### What is the range of modulation index in FM?

FM radio uses frequency modulation, of course. The frequency band for FM radio is about **88 to 108 MHz**. The information signal is music and voice which falls in the audio spectrum. The full audio spectrum ranges form 20 to 20,000 Hz, but FM radio limits the upper modulating frequency to 15 kHz (cf.

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Postulate 12.3: The ASA Postulate. If two angles and the included side of one triangle are congruent to two angles and the included side of a second triangle, then the triangles are congruent.

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Statements | Reasons | |
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2. | ?C ~= ?C | Reflexive property of ~= |

3. | ?ACE ~= ?DCB | ASA Postulate |

### What else must be true for the triangles to be congruent by the HL theorem?

Congruent Triangles - Hypotenuse and leg of a right triangle. (HL) Definition: Two right triangles are congruent if **the hypotenuse and one corresponding leg are equal in both triangles**.

### How do you tell if a triangle is HL?

N/A

- The longest side of a right triangle is called its hypotenuse.
- The HL Theorem states; If the hypotenuse and one leg of a right triangle are congruent to the hypotenuse and one leg of another right triangle, then the triangles are congruent.

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### What does HL mean on proofs?

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### What is HL and HA in geometry?

The **hypotenuse angle theorem, also known as the HA theorem**, states that 'if the hypotenuse and an acute angle of one right triangle are congruent to the hypotenuse and an acute angle of another right triangle, then the two triangles are congruent. '

### What is leg acute angle theorem?

This is the leg-acute theorem. It states that **if the leg and an acute angle of one right triangle are congruent to the corresponding leg and acute angle of another right triangle, then the triangles are congruent**.

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