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Ramsey Electronics RAMSEY MODEL NO. FT146 2 METER FM TRANSMITTER KIT, Required Tools, Time

Models: FT146

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REQUIRED TOOLS

FT146 2 Meter FM Transmitter Kit
Quick Reference Page Guide
Introduction to the FT146	4
Circuit Description	5
Parts List	6
FT146 Assembly Instructions	11
Testing and Alignment	19
Parts Layout Diagram	26
Ramsey Kit Warranty	27

	REQUIRED TOOLS
	• Soldering Iron Ramsey WLC100		TOTAL SOLDER POINTS
	•	Thin Rosin Core Solder Ramsey RTS12	TOTAL SOLDER POINTS
	•	Thin Rosin Core Solder Ramsey RTS12	232
	•	Needle Nose Pliers Ramsey MPP4 or	232
	•	Needle Nose Pliers Ramsey MPP4 or	ESTIMATED ASSEMBLY
	•	RTS05	TIME
	•	Small Diagonal Cutters Ramsey RTS04	Beginner	6.8 hrs
	<OR> Technician’s Tool Kit TK405		Intermediate	3.9 hrs
			Advanced	2.9 hrs

ADDITIONAL SUGGESTED ITEMS

•Holder for PC Board/Parts Ramsey HH3

•Desoldering Braid Ramsey RTS08

•Digital Multimeter Ramsey M133

Price: $5.00

Ramsey Publication No. FT146

Assembly and Instruction manual for:

RAMSEY MODEL NO. FT146 2 METER FM TRANSMITTER KIT

RAMSEY ELECTRONICS, INC.

590 Fishers Station Drive

Victor, New York 14564

Phone (585) 924-4560

FT146 • 28Fax (585) 924-4555

www.ramseykits.com

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Ramsey Electronics manual RAMSEY MODEL NO. FT146 2 METER FM TRANSMITTER KIT, Required Tools, Total Solder Points, Time

Contents

Ramsey Electronics Model No 2 METER FM 5 WATT TRANSMITTER KITFT146 RAMSEY TRANSMITTER KITS FT146 FM RECEIVER KIT TABLE OF CONTENTSKIT ASSEMBLY INTRODUCTION FT146 CIRCUIT DESCRIPTION Capacitors FT146 2 METER FM TRANSMITTER KIT PARTS LISTResistors and potentiometers Inductors and ferrite cores Semiconductor devicesSpecial components 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 Markings on this sideThis lead towards L5 Test point loop79. Winding L3 and L4 Use the same wire and enameled wireis 2 1/2 turns and will appear to be 3 turns if viewed from the topFT146 FT146 wire jumper Wire sits flatResistor against board99. Install R22, 1K ohm brown-black-red Leave leads long R13 TESTING, ALIGNMENT AND ADJUSTMENTShort lead here 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 FT146FT146 The Ramsey Kit Warranty3.FACTORY REPAIR OF ASSEMBLED KITS ESTIMATED ASSEMBLY RAMSEY MODEL NO. FT146 2 METER FM TRANSMITTER KITREQUIRED TOOLS TOTAL SOLDER POINTS