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เสนอ. นางสุภาวัลย์ บุญใส. โดย นักเรียนชั้นมัธยมศึกษาปีที่ 4/7 กลุ่ม 2 โรงเรียนขุ ขันธ์ จังหวัดศรีสะ เกษ.

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3174247

4/7 2


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..2407 (James Clerk Maxvell) (Rudolph Henrich Hertz) ..2429 (Hertzain Wave) ( 1 )


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19 (Paul Nipkow) (Nipkow disk)


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2 ..2479 100 3 3 10 12 6,000 2 3,000


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108 80


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1) 30- 300MHz Very high Frequency (VHF) 300 - 3000 MHz Ultra high Frequency (UHF)


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2) 2.1) 2.2) 2.3)


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3)

4) (www.) ( Network )


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PAL VHF UHF VHF UHF


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1)

2) -

3) .. ( AM ) .. (FM )


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4) - 5) -


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- () 14.5-

-


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-

-

-


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1.

2.

3...2407

4. 19

5. 2 2479

6. 108


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7.

8. 80 ..

9.

10. 30-300 MHz VHF 300-3000MHzUHF

11.

12.


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13.

14. PAL VHF UHF VHF

15.

16.-

17.

18. ()


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1.

1) 108 Hz2) 109 Hz

3) 1010Hz4) 108-109 Hz

5) 10-8-10-9Hz

1


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2.

A.

B.

C.

1) A2) B3) C4) A & B

5) B & C


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3.

A. B. C.

1) A & B2) B & C3) A 4) B 5) C


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4.

1)

2)

3)

4)

5)


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5.

A.

B.

C.

1) A & B2) B & C3) B 4) A 5) C


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6. 30 300 MHz VHF

1) Very HierFrequengy2) Varie High Regency 3) VevyHightFregency 4) Very High Frequency

5) Very Hight Frequency


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7.

A. 30-300 MHz B. 120-1500 MHz

C. 300-3000 MHz D. 1200-3000 MHz

1) A & D2) A & B 3)A & C

4) B,C & D 5)


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8.

A. B.C.

1. A & B2) B & C 3) A, B & C

4) A 5) A ,B ,C,D


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9.

A. FMB. AM

C. D.

1) D2) C3) B

4) A5) C & D


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10.

A. B.C.D. WiFi E.

1) only E2) B & C3) C & D

4) D & C5) D & E


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2

1. 3

1)........................................................................................................

2)........................................................................................................

3)........................................................................................................


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2. 3

1)........................................................................................................

2)........................................................................................................

3)........................................................................................................


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3. ..2407

.....................................................................................................

4. 19

................................................................................................................


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ANSWER

1. 1

2. 1

3. 5

4. 4

5. 5

1

6. 4

7. 3

8. 3

9. 2

10. 5


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2

1.

2. ( )

3. ..2407 (James ClerlMaxvell)

4. 19 (Paul Nipkow)


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Group Member

1. 4

2. 8

3. 18

4. 42

5. 47

6. 48

4/7


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THE END


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