Ramsey Electronics FR6 manual Controls and Hardware, REQUIRED, not Supplied

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ˆ4 62 pF (C3,4,9,10)

ˆ4 100 pF [marked 100, 101, or 101K] (C6,11,12,22)

ˆ1 220 pF [marked 220 or 221] (C18)

ˆ6 .001 uF [marked .001 or 102 or 1 nF] (C7,8,20,23,24,25)

ˆ8 .01 uF [marked .01 or 103 or 10 nF] (C13,16,17,21,26,28,29,31)

ˆ1 .1 uF [marked .1 or 104] (C34)

ˆ1 1.0 uF electrolytic (C27)

ˆ3 4.7 or 10 uF electrolytic (C15,30,36)

ˆ4 100 to 220 uF electrolytic (C14,32,33,35)

Controls and Hardware

ˆ1 Printed circuit board

ˆ3 10K ohm potentiometer (R1,R2,R3)

ˆ1 DPDT push switch (S1)

ˆ1 PC mount RCA jack (J1)

ˆ1 PC mount subminiature speaker jack (J2)

ˆ1 9-volt battery bracket

ˆ1 9-volt battery snap-on clip

REQUIRED, NOT SUPPLIED

ˆ1 9-volt alkaline battery

ˆ1 VHF antenna with cable terminated in RCA-style plug or adapter

ˆ1 Speaker or headphones

NOTE CONCERNING THE AUDIO OUTPUT JACK

Your receiver kit is supplied with a standard subminiature 2.5 mm (3/32") audio output jack, which mates with commonly available earphone plugs and adapters available at Radio Shack, such as 274-290 (plug) or 274-327 (adapter for 1/8" mono plug). If you prefer to use another size and style jack, we suggest that you still install the original jack and then wire your own jack in parallel with it rather to rough up the PC board to accommodate your jack.

FR6 • 7

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Contents Meter FM Receiver KIT Ramsey Transmitter Kits FR6 6 Meter FM Receiver KIT Introduction FR6 Circuit Description Building Your FR6 KITParts List REQUIRED, not Supplied Controls and HardwareFR6 Block Diagram FR6 Parts Layout Diagram FR6 For Each PART, OUR Word Install Always Means These Steps Ramsey Learn-As-You-Build KIT AssemblyAntenna Input and Tuned RF Preamplifier SA602 OSCILLATOR-MIXER and Varactor TuningFR6 Progress Summary MC3359 FM IC and Associated Components Final Connections the LM386 Audio IC Stage FR6 Alignment Procedure TESTING, Alignment and AdjustmentReceiver Sensitivity Adding AN LED Power on IndicatorOther Enclosure Recommendations Ramsey Electronics CASE, Knob & Hardware OptionFR6 Troubleshooting Guide Some Notes for Advanced Users Ramsey Kit Warranty Total Solder Points Estimated Assembly TimeRequired Tools Additional Suggested Items