Perekayasaan Sistem Radio dan Televisi(1)

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PEREKAYASAAN SISTEM RADIO dan TELEVISI D. TUGAS 1. Siapkan kabel koaksial type RG58 sepanjang 2 meter. 2. Siapkan Antenna Analyzer / SWR analyzer contoh MFJ259 atau yang seri lebih tinggi 3. Pasang konektor di salah satu ujung kabel RG58 yang sudah tersedia dengan model konektor yang sesuai dengan Antenna Analyzer. 4. Hubungkan kabel RG58 tersebut ke Antenna Analyzer, kemudian atur tombol pengaturnya pada posisi frekuensi sekitar 144MHz. 5. Atur tombol “Tune” sehingga didapatkan penunjukan R mendekati 50 dan X mendekati 0. Kemudian catat hasilnya. 6. Potonglah ujung kabel RG58 sepanjang 5 cm. Ulangi langkah 5 diatas. 7. Potonglagi ujung kabel RG58 sepanjang 5 cm lagi. Kemudian ulangi langkah 5 diatas. 8. Ulangi langkah 1 sampai dengan 7 untuk kabel RG8. 9. Dari hasil percobaan diatas, buatlah kesimpulannya. Gambar MFJ HF/VHF SWR Analyzer Model MFJ-259B 28
PEREKAYASAAN SISTEM RADIO dan TELEVISI E. TES FORMATIF 1. Untuk menghubungkan antena dengan pesawat dan pemancar dengan antena diperlukan ..... 2. Semakin tinggi frekuensi sinyal yang lewat akan semakin ...... X L dan semakin ........ X C . 3. Berapakah besarnya redaman pada umumnya kabel transmisi dengan kepanjangan 100m yang dipekerjakan pada frekuensi 100MHz ? 4. Berapakah besarnya Zo pada kabel koaksial yang anda ketahui ? 5. Kabel jenis apa yang hanya mampu bekerja sampai beberapa ratus MHz ? F. LEMBAR JAWAB TES FORMATIF 1 .................................................................................................................... .................................................................................................................... .................................................................................................................... .................................................................................................................... 2 .................................................................................................................... .................................................................................................................... .................................................................................................................... .................................................................................................................... 3 .................................................................................................................... .................................................................................................................... .................................................................................................................... .................................................................................................................... 4 .................................................................................................................... .................................................................................................................... .................................................................................................................... .................................................................................................................... 29
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Perekayasaan Sistem Radio dan Televisi(1)

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