Difference between revisions of "Antenna Double Bazooka"
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[[Image:Doublbaz.gif|center|300px|thumb]] | [[Image:Doublbaz.gif|center|300px|thumb]] | ||
| − | Rumus dalam Meter | + | Rumus Antenna dalam Meter |
Panjang Total Antenna (m) = 140.21 / frekuensi (MHz) | Panjang Total Antenna (m) = 140.21 / frekuensi (MHz) | ||
| Line 70: | Line 70: | ||
| 0.98 | | 0.98 | ||
|} | |} | ||
| + | |||
| + | |||
| + | Bagi yang kesulitan mencari kabel 300 ohm, dapat membuat sendiri Ladder Line 300 ohm melalui rumus | ||
| + | |||
| + | S=(d/2) exp(Z/276) | ||
| + | |||
| + | S = Spasi antar kabel | ||
| + | d = diameter kabel | ||
| + | |||
| + | |||
| + | Contoh | ||
| + | |||
| + | d | ||
| + | |||
==Referensi== | ==Referensi== | ||
Revision as of 08:56, 9 January 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) |
|---|---|---|---|
| 1.618 | 86.66 | 61.22 | 12.72 |
| 3.550 | 39.5 | 27.9 | 5.8 |
| 3.8 | 36.9 | 26.07 | 5.41 |
| 7.025 | 19.96 | 14.1 | 2.93 |
| 7.070 | 19.83 | 14.01 | 2.91 |
| 7.110 | 19.72 | 13.93 | 2.89 |
| 10.147 | 13.82 | 9.76 | 2.03 |
| 14.070 | 9.97 | 7.04 | 1.46 |
| 14.150 | 9.91 | 7.00 | 1.45 |
| 18.105 | 7.74 | 5.47 | 1.14 |
| 21.070 | 6.65 | 4.7 | 0.98 |
Bagi yang kesulitan mencari kabel 300 ohm, dapat membuat sendiri Ladder Line 300 ohm melalui rumus
S=(d/2) exp(Z/276)
S = Spasi antar kabel d = diameter kabel
Contoh
d