Antenna Double Bazooka: Difference between revisions

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New page: center|300px|thumb ==Referensi== * http://www.hamuniverse.com/bazooka.html ==Pranala Menarik== * Antenna Amatir Radio
 
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[[Image:Orari.jpg|right|100px|thumb|[[Organisasi Amatir Radio Indonesia]]]]
[[Image:Doublbaz.gif|center|300px|thumb]]
[[Image:Doublbaz.gif|center|300px|thumb]]


Rumus Antenna dalam Meter
Panjang Total Antenna (m)  = 140.21 / frekuensi (MHz)
Panjang Total coax (m)    =  99.06 / frekuensi (MHz)
Panjang Twinlead satu sisi = (Total Antenna - Coax) / 2
Beberapa Hasil Perhitungan
{| border="1" cellpadding=2 style="border-collapse: collapse"
! Frekuensi (Mhz)
! Total Antenna (meter)
! Panjang Coax (meter)
! Twinlead / sayap (meter)
! Min. Tinggi dr tanah (meter)
! Min. Tinggi ujung dr tanah (meter)
|-
| 1.618
| 86.66
| 61.22
| 12.72
| 18
| 5
|-
| 3.550
| 39.5
| 27.9
| 5.8
| 12
| 5
|-
| 3.8
| 36.9
| 26.07
| 5.41
| 12
| 5
|-
| 7.025
| 19.96
| 14.1
| 2.93
| 8
| 3
|-
| 7.070
| 19.83
| 14.01
| 2.91
| 8
| 3
|-
| 7.110
| 19.72
| 13.93
| 2.89
| 8
| 3
|-
| 10.147
| 13.82
| 9.76
| 2.03
| 8
| 2
|-
| 14.070
| 9.97
| 7.04
| 1.46
| 8
| 2
|-
| 14.150
| 9.91
| 7.00
| 1.45
| 8
| 2
|-
| 18.105
| 7.74
| 5.47
| 1.14
| 8
| 2
|-
| 21.070
| 6.65
| 4.7
| 0.98
| 8
| 2
|}
Bagi yang kesulitan mencari kabel 300 ohm, dapat membuat sendiri Ladder Line 300 ohm melalui rumus
Z = 276 log ( 2S/d )
S = (d/2) 10 * exp(Z/276)
S = Spasi antar kabel
d = diameter kabel
Contoh untuk Z = 300 ohm
d = 1.5 mm
S = 22.2 mm
d = 2.5 mm
S = 37.07 mm




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* [[Antenna Amatir Radio]]
* [[Antenna Amatir Radio]]
[[Category: ORARI]]

Latest revision as of 02:43, 11 May 2010

Organisasi Amatir Radio Indonesia

Rumus Antenna dalam Meter 

Panjang Total Antenna (m)  = 140.21 / frekuensi (MHz)
Panjang Total coax (m)     =  99.06 / frekuensi (MHz)
Panjang Twinlead satu sisi = (Total Antenna - Coax) / 2

Beberapa Hasil Perhitungan

Frekuensi (Mhz) Total Antenna (meter) Panjang Coax (meter) Twinlead / sayap (meter) Min. Tinggi dr tanah (meter) Min. Tinggi ujung dr tanah (meter)
1.618 86.66 61.22 12.72 18 5
3.550 39.5 27.9 5.8 12 5
3.8 36.9 26.07 5.41 12 5
7.025 19.96 14.1 2.93 8 3
7.070 19.83 14.01 2.91 8 3
7.110 19.72 13.93 2.89 8 3
10.147 13.82 9.76 2.03 8 2
14.070 9.97 7.04 1.46 8 2
14.150 9.91 7.00 1.45 8 2
18.105 7.74 5.47 1.14 8 2
21.070 6.65 4.7 0.98 8 2


Bagi yang kesulitan mencari kabel 300 ohm, dapat membuat sendiri Ladder Line 300 ohm melalui rumus 

Z = 276 log ( 2S/d )
S = (d/2) 10 * exp(Z/276)

S = Spasi antar kabel
d = diameter kabel


Contoh untuk Z = 300 ohm 

d = 1.5 mm
S = 22.2 mm

d = 2.5 mm
S = 37.07 mm


Referensi

Pranala Menarik

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