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VEC-830K Instruction Manual

Single Side-Band Filter Kit

PARTS PLACEMENT DIAGRAM

Figure 1

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Summary of Contents for VEC-830K

Page 1: ...rves the right to make substitutions at any time In most cases these changes will be clearly noted in an addendum to the manual Defective Parts Today s electronic parts are physically and electrically...

Page 2: ...th many hours of use TOOLS AND SUPPLIES Construction Area Kit construction requires a clean smooth and welllighted area where you can easily organize and handle small parts without losing them An inex...

Page 3: ...older joints and solder bridges Cold solder joints happen when you don t fully heat the connection or when metallic corrosion and oxide contaminate a component lead or pad Solder bridges form when a t...

Page 4: ...sed Parts damaged or severely overheated during extraction should be replaced rather than reinstalled Work Habits Kit construction requires the ability to follow detailed instructions and in many case...

Page 5: ...a color code for value Instead the value or a 3 number code is printed on the body identification As with resistors it s helpful to sort capacitors by type and then to arrange them in ascending order...

Page 6: ...so use this type packaging Larger plastic transistors and voltage regulators use a case backed with a prominent metal tab to dissipate heat T 220 Here orientation is indicated by the nositionine of th...

Page 7: ...rganized by type and arranged by value ahead of time Use this inventory as an opportunity to sort and arrange parts so you can identify and find them quickly Qty Part Description Designation 2 100K oh...

Page 8: ...VEC 830K Instruction Manual Single Side Band Filter Kit PARTS PLACEMENT DIAGRAM Figure 1...

Page 9: ...will be inserted on the silk screen side of the board If you have last minute questions about what you need to build your kit please refer back to the section titled Tools and Supplies If you re ready...

Page 10: ...e leads 14 Locate resistor R8 This is a 1 2M ohm resistor brown red greengold 15 Insert R8 into its mounting holes so the resistor body rests against the board Solder in place and trim the leads 16 Lo...

Page 11: ...70J actual value in pF Carefully install C8 in the same manner as C7 solder in place and trim the leads 26 Locate two 2 6 insulated wires Cut these wires in halt making four 4 3 pieces 27 Using the wi...

Page 12: ...ll the IC socket at the U 1 location on the circuit board Be careful to orient the socket correctly according to the Parts Placement section Figure 1 41 Carefully bend over the four corner pins of the...

Page 13: ...act vet 52 Locate one 1 6 insulated wire and cut it in half making two 2 3 wires 53 Cut one 1 3 wire in half making two 2 11 2 pieces 54 Using the wire strippers remove about 1 4 of the insulation fro...

Page 14: ...o replace it than risk reusing it Finally rosin flux can absorb moisture which may cause a problem for some electronic equipment To remove flux use isopropyl alcohol or 95 grain alcohol and an old too...

Page 15: ...G INSTRUCTIONS You may use the VEC 830K with any communications receiver or scanner The VEC 830K requires a 9 volt battery power source There are a few items that you will need to operate the VEC 830K...

Page 16: ...uires a very close and careful inspection of all work Please go back through all steps of assembly and inspection referring to the Parts Placement Figures 1 2 and 3 Most of the time there will be a pa...

Page 17: ...rth filter stages Unlike passive filters using inductors no impedance matching is necessary for optimum performance Also there is no insertion loss within the passband This results in minimum amplitud...

Page 18: ......

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