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Ramsey Electronics manual FT146 PARTS LAYOUT DIAGRAM

Models: FT146

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FT146 PARTS LAYOUT DIAGRAM

FT146 PARTS LAYOUT DIAGRAM

FT146 • 26

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Ramsey Electronics manual FT146 PARTS LAYOUT DIAGRAM

Contents

FT146 2 METER FM 5 WATT TRANSMITTER KITRamsey Electronics Model No RAMSEY TRANSMITTER KITS KIT ASSEMBLY TABLE OF CONTENTSFT146 FM RECEIVER KIT INTRODUCTION FT146 CIRCUIT DESCRIPTION Resistors and potentiometers FT146 2 METER FM TRANSMITTER KIT PARTS LISTCapacitors Special components Inductors and ferrite coresSemiconductor devices Required, not suppliedRAMSEY Learn-As-You-BuildKIT ASSEMBLY 9. Install R14, 100K ohm brown-black-yellow 21. Install R15, 10K ohm brown-black-orange 41. Install R7, 470 ohm yellow-violet-brown This lead towards L5 Markings on thisside Test point loopis 2 1/2 turns and will appear to be 3 turns if 79. Winding L3 and L4 Use the same wire andenameled wire viewed from the topFT146 FT146 Resistor wire jumperWire sits flat against board99. Install R22, 1K ohm brown-black-red Short lead here TESTING, ALIGNMENT AND ADJUSTMENTLeave leads long R13 4. A suitable 50 ohm dummy load YOUR POWER SUPPLY AND RF OUTPUT POWER VERIFYING TRANSMITTER RF OUTPUTtransmitter keying in a receiver is of some help, but even the simplest crystal oscillator can send a fine signal into your neighbors receiver MAXIMIZING RF POWER OUTPUT TROUBLESHOOTING HINTSMICROPHONE CONSIDERATIONS OTHER ENCLOSURE RECOMMENDATIONS CRYSTAL REQUIREMENTSNOTE ON REPLACEMENT PARTS FT146 PARTS LAYOUT DIAGRAM FT1463.FACTORY REPAIR OF ASSEMBLED KITS The Ramsey Kit WarrantyFT146 REQUIRED TOOLS ESTIMATED ASSEMBLYRAMSEY MODEL NO. FT146 2 METER FM TRANSMITTER KIT TOTAL SOLDER POINTS