Difference between revisions of "Antenna Double Bazooka"
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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]] | ||
| Line 14: | Line 15: | ||
! Panjang Coax (meter) | ! Panjang Coax (meter) | ||
! Twinlead / sayap (meter) | ! Twinlead / sayap (meter) | ||
| + | ! Min. Tinggi dr tanah (meter) | ||
| + | ! Min. Tinggi ujung dr tanah (meter) | ||
|- | |- | ||
| 1.618 | | 1.618 | ||
| Line 19: | Line 22: | ||
| 61.22 | | 61.22 | ||
| 12.72 | | 12.72 | ||
| + | | 18 | ||
| + | | 5 | ||
|- | |- | ||
| 3.550 | | 3.550 | ||
| Line 24: | Line 29: | ||
| 27.9 | | 27.9 | ||
| 5.8 | | 5.8 | ||
| + | | 12 | ||
| + | | 5 | ||
|- | |- | ||
| 3.8 | | 3.8 | ||
| Line 29: | Line 36: | ||
| 26.07 | | 26.07 | ||
| 5.41 | | 5.41 | ||
| + | | 12 | ||
| + | | 5 | ||
|- | |- | ||
| 7.025 | | 7.025 | ||
| Line 34: | Line 43: | ||
| 14.1 | | 14.1 | ||
| 2.93 | | 2.93 | ||
| + | | 8 | ||
| + | | 3 | ||
|- | |- | ||
| 7.070 | | 7.070 | ||
| Line 39: | Line 50: | ||
| 14.01 | | 14.01 | ||
| 2.91 | | 2.91 | ||
| + | | 8 | ||
| + | | 3 | ||
|- | |- | ||
| 7.110 | | 7.110 | ||
| Line 44: | Line 57: | ||
| 13.93 | | 13.93 | ||
| 2.89 | | 2.89 | ||
| + | | 8 | ||
| + | | 3 | ||
|- | |- | ||
| 10.147 | | 10.147 | ||
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| 9.76 | | 9.76 | ||
| 2.03 | | 2.03 | ||
| + | | 8 | ||
| + | | 2 | ||
|- | |- | ||
| 14.070 | | 14.070 | ||
| Line 54: | Line 71: | ||
| 7.04 | | 7.04 | ||
| 1.46 | | 1.46 | ||
| + | | 8 | ||
| + | | 2 | ||
|- | |- | ||
| 14.150 | | 14.150 | ||
| Line 59: | Line 78: | ||
| 7.00 | | 7.00 | ||
| 1.45 | | 1.45 | ||
| + | | 8 | ||
| + | | 2 | ||
|- | |- | ||
| 18.105 | | 18.105 | ||
| Line 64: | Line 85: | ||
| 5.47 | | 5.47 | ||
| 1.14 | | 1.14 | ||
| + | | 8 | ||
| + | | 2 | ||
|- | |- | ||
| 21.070 | | 21.070 | ||
| Line 69: | Line 92: | ||
| 4.7 | | 4.7 | ||
| 0.98 | | 0.98 | ||
| + | | 8 | ||
| + | | 2 | ||
|} | |} | ||
| Line 74: | Line 99: | ||
Bagi yang kesulitan mencari kabel 300 ohm, dapat membuat sendiri Ladder Line 300 ohm melalui rumus | Bagi yang kesulitan mencari kabel 300 ohm, dapat membuat sendiri Ladder Line 300 ohm melalui rumus | ||
| − | S=(d/2) exp(Z/276) | + | Z = 276 log ( 2S/d ) |
| + | S = (d/2) 10 * exp(Z/276) | ||
S = Spasi antar kabel | S = Spasi antar kabel | ||
| Line 80: | Line 106: | ||
| − | Contoh | + | Contoh untuk Z = 300 ohm |
| − | d | + | d = 1.5 mm |
| + | S = 22.2 mm | ||
| + | |||
| + | d = 2.5 mm | ||
| + | S = 37.07 mm | ||
| Line 92: | Line 122: | ||
* [[Antenna Amatir Radio]] | * [[Antenna Amatir Radio]] | ||
| + | |||
| + | [[Category: ORARI]] | ||
Latest revision as of 09:43, 11 May 2010
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