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Low Power AM Broadcast

Low Power AM Broadcast. Onno W. Purbo Onno@indo.net.id YC1DAV. Low Power AM. 100mW – 20W MW AM Broadcast Band < Rp. 1 Juta / Transmitter. Referensi. http://www.northcountryradio.com http://www.thebizlink.com/am/tech/ http://members.nbci.com/mediumwave/circuits/poppet.html

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Low Power AM Broadcast

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  1. Low Power AM Broadcast Onno W. Purbo Onno@indo.net.id YC1DAV

  2. Low Power AM • 100mW – 20W • MW AM Broadcast Band • < Rp. 1 Juta / Transmitter

  3. Referensi • http://www.northcountryradio.com • http://www.thebizlink.com/am/tech/ • http://members.nbci.com/mediumwave/circuits/poppet.html • http://www.ramseyelectronics.com/hk/hobbykits.htm • http://www.alphalink.com.au/~parkerp/nojun98.htm

  4. K1ETP 5W AM QRP

  5. NE1STX

  6. EL 90 AM TX

  7. The Poppet

  8. C1, C2, C13: 0.5 uF C3: 1 nF (1000 pF) C4, C5: 10 uF electrolytic C6: 10 nF (.01 uF) C7, C15: 100 nF (.1 uF) C8, C16: 330 pF C9: 50 pF variable C10: 200 pF C11, C12: 1n8 (1800 pF) C14: 68 pF C17: 220 pF D1: 1N4148 D2: 9 volt zener J1: microphone jack J2: RF output jack L1: 60 turns, 38 SWG wire, T37-2 core L2: 50 turns, 38 SWG wire, T37-2 core R1: 560 K R2: 4700 ohms R3: 1K trimpot (mic. gain adjust) R4: 270 K R5: 100 K R6: 560 ohms R7: 33 K R8: 5600 ohms R9: 100 ohms Komponen Pasif

  9. Q1, Q3: BC109 (possible equivalents: NTE123A, 2N2222A) Q2: 2N3819 or similar Q4: BFY51 (possible equivalents: NTE128, 2N3053) RFC1: 10 turns of small enameled wire on ferrite bead RFC2: 1 mH, rated for 500 milliamps T1: 12 turns primary, 2 turns sec. on half-inch binocular ferrite core Komponen Aktif

  10. Ramsey 100mW US$30

  11. Ramsey AM 100mW US$130

  12. Power Booster 1W AM US$40

  13. AM88 LP AM XMTR

  14. AM88 LP AM XMTR

  15. Antenna Untuk LP AM

  16. VK1PK End Fed Antenna

  17. VK1PK L-Match & Antenna Coupler

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