Manuals
/
Ramsey Electronics
/
Home Audio
/
Satellite Radio
Ramsey Electronics
FT146 manual
Models:
FT146
1
15
28
28
Download
28 pages
7.7 Kb
12
13
14
15
16
17
18
19
<
>
Troubleshooting
FT146 PARTS LAYOUT DIAGRAM
Note On Replacement Parts
Warranty
enameled wire
Estimated Assembly
Page 15
Image 15
FT146 • 15
Page 14
Page 16
Page 15
Image 15
Page 14
Page 16
Contents
2 METER FM 5 WATT TRANSMITTER KIT
Ramsey Electronics Model No
FT146
RAMSEY TRANSMITTER KITS
TABLE OF CONTENTS
FT146 FM RECEIVER KIT
KIT ASSEMBLY
INTRODUCTION
FT146 CIRCUIT DESCRIPTION
FT146 2 METER FM TRANSMITTER KIT PARTS LIST
Capacitors
Resistors and potentiometers
Required, not supplied
Inductors and ferrite cores
Semiconductor devices
Special components
RAMSEY 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
Test point loop
Markings on this
side
This lead towards L5
viewed from the top
79. Winding L3 and L4 Use the same wire and
enameled wire
is 2 1/2 turns and will appear to be 3 turns if
FT146
FT146
against board
wire jumper
Wire sits flat
Resistor
99. Install R22, 1K ohm brown-black-red
TESTING, ALIGNMENT AND ADJUSTMENT
Leave leads long R13
Short lead here
4. A suitable 50 ohm dummy load
VERIFYING TRANSMITTER RF OUTPUT
YOUR POWER SUPPLY AND RF OUTPUT POWER
transmitter keying in a receiver is of some help, but even the simplest crystal oscillator can send a fine signal into your neighbors receiver
TROUBLESHOOTING HINTS
MAXIMIZING RF POWER OUTPUT
MICROPHONE CONSIDERATIONS
CRYSTAL REQUIREMENTS
OTHER ENCLOSURE RECOMMENDATIONS
NOTE ON REPLACEMENT PARTS
FT146
FT146 PARTS LAYOUT DIAGRAM
The Ramsey Kit Warranty
FT146
3.FACTORY REPAIR OF ASSEMBLED KITS
TOTAL SOLDER POINTS
ESTIMATED ASSEMBLY
RAMSEY MODEL NO. FT146 2 METER FM TRANSMITTER KIT
REQUIRED TOOLS