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FR-10 10 Meter FM Receiver Kit
Quick Reference Page Guide
ntroduction to the FR-10 .............. 4
I
Circuit Description ........................ 5
Parts List ...................................... 6
Simplified Block Diagram .............. 8
Parts Layout Diagram ................... 9
FR-10 Assembly Instructions ........ 11
Schematic Diagram ...................... 14
Testing and Alignment .................. 20
Enclosure Ideas ............................ 23
Troubleshooting Guide ................. 24
Notes for Advanced Users ............ 25
Ramsey Kit Warranty .................... 27
REQUIRED TOOLS
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Soldering Iron (Radio Shack #RS64-2072)
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Thin Rosin Core Solder (RS64-025)
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Needle Nose Pliers (RS64-1844)
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Small Diagonal Cutters (RS64-1845)
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<OR> Complete Soldering Tool Set
(RS64-2801)
ADDITIONAL SUGGESTED ITEMS
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Soldering IronHolder/Cleaner
Price: $5.00
Ramsey Publication No. FR-10
Assembly and Instruction manual for:
RAMSEY ELECTRONICS, INC.
793 Canning Parkway
Victor, New York 14564
Phone (716) 924-4560
Fax (716) 924-4555
TOTAL SOLDER POINTS
232
ESTIMATED ASSEMBLY
TIME
Beginner .............. 6.8 hrs
Intermediate ........ 3.9 hrs
Advanced ............ 2.9 hrs
(RS-64-
Printed on recycled paper
FR-10 ? 28
10 METER FM
RECEIVER KIT
Ramsey Electronics Model No.
Check out the 10 meter action with this simple and fun
to build FM receiver. Receive crystal-clear signals from
thousands of miles away! Ten meters is a fascinating
band! Tune the entire 10 Meter band o r the VHF low
Police and Fire band.
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Tunes any 5 MHz portion of the 25 to 35 MHz band.
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Excellent performance, less than 1 uV sensitivity.
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Tuned input, low noise preamp stage.
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True Dual-conversion superhet design with 2 pole
Ceramic High IF and 6 pole Ceramic low IF filters!
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Front Panel Volume, Squelch, and Tuning controls.
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Excellent receiver for beginners and seasoned pros!
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Informative manual answers questions on theory,
hook-ups, and uses - enhances resale value, too!
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Add our case set for a finished 'Pro' look. Cases match
all Ramsey products.
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Clear, concise assembly instruction carefully guides
you to a finished kit that works the FIRST time!
FR-10
FR-10 ? 1
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Table of Contents
Related Manuals for Ramsey Electronics FR-10
Summary of Contents for Ramsey Electronics FR-10
- Page 1 10 METER FM FR-10 10 Meter FM Receiver Kit Quick Reference Page Guide RECEIVER KIT ntroduction to the FR-10 ....4 Circuit Description ......5 Parts List ........6 Simplified Block Diagram ....8 Parts Layout Diagram ....9 Ramsey Electronics Model No.
- Page 2 '1K ohm' resistors are actually the 'missing' 10 K parts ("Hum-m-m, I guess the 'red' band ??PH-10 Peak hold Meter really does look orange!") Ramsey Electronics project kits are packed with pride in the USA. If you ??LC-1 Inductance-Capacitance Meter...
- Page 3 KIT ASSEMBLY AND INSTRUCTION MANUAL FOR FR-10 10 METER FM RECEIVER KIT TABLE OF CONTENTS ntroduction to the FR-10 ....4 Circuit Description ......5 Parts List ........6 Simplified Block Diagram ....8 Parts Layout Diagram ....9 FR-10 Assembly Instructions ..11 Schematic Diagram .......
- Page 4 These receivers do what they are intended to do at the lowest price that we are aware of for a tunable There's not a lot to say about using the FR-10 receiver once its been VHF FM receiver with squelch, AFC and generous audio output.
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Page 5: Circuit Description
BUILDING YOUR FR-10 KIT Check the following: There are just over 200 solder connections on the FR-10 printed circuit First, the cable or plug adapter leading to speaker or phones! board. That means your work could be 99% excellent and you could Battery condition and battery wire polarity and soldering at S1. -
Page 6: Parts List
IF of 450 KHz. The 450 KHz IF is filtered by FL2 and then amplified by a limiting amplifier in U2. Audio demodulation THE RAMSEY ELECTRONICS CASE, KNOB & HARDWARE takes place in the quadrature detector, with L4 adjusting the detector. -
Page 7: Receiver Sensitivity
Your FM receiver features sensitivity under 1 uv. Radio Hams constantly 1 33K ohm [orange-orange-orange] (R14) marvel at how an FR-10 displayed at hamfests tunes in dozens of hand- 4 47K ohm [yellow-violet-orange] (R4,8,13,21) held QSO's on the premises without an antenna connected! You can... -
Page 8: Block Diagram
If you are a beginner with no license or other equipment, any Ham operator with a 10-meter transceiver should be willing to give you the test signal and extra help that you need. The FR-10 is very sensitive, so operate the transceiver on low power on a simplex frequency from a distance of at least across the room. -
Page 9: Parts Layout Diagram
TESTING, ALIGNMENT AND ADJUSTMENT FR-10 PARTS LAYOUT DIAGRAM To prepare the FR-10 FM VHF Receiver for reliable monitoring operation, you will need these basic tools: 1. A useful 10 meter signal source. 2. Hexagonal, non-metallic coil slug alignment tool for L3. - Page 10 Brush the solder side of the board with a stiff brush to make sure that no loose wire trimmings or solder drippings (tsk tsk) are lodged between connections. FR-10 ? 10 FR-10 ? 19...
- Page 11 4. Install controls R1, R2 and R3. Insert the three PC mounted controls into their positions. Check that the controls are pressed 74. Install R16, 100K ohms [brown-black-yellow]. in firmly and straight against the top of the board. Solder the three FR-10 ? 18 FR-10 ? 11...
- Page 12 13. Install R4, 47K, just to the left of Q1. [yellow-violet-orange]. 56. Install R17, 10K ohms [brown-black-orange]. 14. Install C6, 100 pf [marked 100 or 101]. 57. Install R14, 33K ohms [orange-orange-orange]. FR-10 ? 12 FR-10 ? 17...
- Page 13 26. Install L3. It is important that the body of this coil be snug against the PC board for mechanical stability, which directly affects the frequency stability of the receiver. Make good, solid solder connections! FR-10 ? 16 FR-10 ? 13...
- Page 14 FR-10 ? 14 FR-10 ? 15...