Vectronics VEC-1320K Owner'S Manual Download Page 11 | Manualshive

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Summary of Contents for VEC-1320K

Page 1: ...part is no longer available or if Engineering has determined that an alternative component is more suitable Vectronics reserves the right to make substitutions at any time In most cases these changes...

Page 2: ...it well and include the minimum payment plus shipping and handling charges 25 00 total No work can be performed without pre payment Also provide a valid UPS return address and a day time phone number...

Page 3: ...r stations using a simple home built rig you made with your own two hands TOOLS AND SUPPLIES Construction Area Kit construction requires a clean smooth and well lighted area where you can easily organ...

Page 4: ...d Transistors have a flat side or emitter tab to help you identify the correct mounting position ICs have a notch or dot at one end indicating the correct direction of insertion Diodes have a banded e...

Page 5: ...solder before attempting to extract the part Alternatively a low cost vacuum bulb or spring loaded solder sucker may be used Parts damaged or severely overheated during extraction should be replaced r...

Page 6: ...lue or a 3 number code is printed on the body Multilayer 271 270 pF Ceramic Discs 1uF 35V 104 Electrolytic 1 uF 10 pF 100 100 pF 101 1000 pF 102 001 uF 102 01 uF 103 1 uF 104 Value Code 102 001 uF 1 u...

Page 7: ...220 Here orientation is indicated by the positioning of the cooling tab Emitter Flat Side Metal Tab Metal Can Device Plastic Device Tab cooled Device Integrated Circuits Proper IC positioning is indic...

Page 8: ...to all four models of the VEC QRP CW Transmitter Kit Capacitors Qty Part Description Designation VEC P N 7 01 uF ceramic disc 103 C17 C19 C21 C22 C26 C29 C31 200 2100 2 05 uF ceramic disc 503 C6 C12 2...

Page 9: ...12 Now to complete the inventory select the list below for the specific model of your kit and check off those items VEC 1320K 20 Meter Parts Package Qty Part Description Designation VEC P N 1 2 2 pF c...

Page 10: ...80 Meter Parts Package Qty Part Description Designation VEC P N 1 4 7 pF ceramic disc 4 7 C13 200 00047 1 1 68 pF multilayer 68 or 680 C15 220 0068 1 100 pF multilayer 101 C18 220 0100 1 180 pF multil...

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Page 12: ...each lead over to hold it in place Use sharp side cutters to clip off excess lead length before soldering Make sure trimmed leads don t touch other pads and tracks or a short circuit may result Good...

Page 13: ...all a 10K resistor at R5 and solder 10 Install a 10K resistor at R6 and solder 11 Install a 10K resistor at R14 and solder Find two 2 47K resistors yellow violet orange 12 Install a 47K resistor at R9...

Page 14: ...the longer of the two Locate three 3 1 uF electrolytic capacitors 28 Install 1 uF at C4 and solder 29 Install 1 uF at C5 and solder 30 Install 1 uF at C11 and solder 31 Find a 10 uF electrolytic capac...

Page 15: ...capacitor C16 later on Next install the kit s transistors and diodes Positioning of these parts is critical they must be oriented correctly 39 Locate the 2N3906 transistor black plastic case checking...

Page 16: ...arkings NE602AN or other similar nomenclature such as SA602 Note that the IC body has a small notch or dimple called a installation key molded at one end Inspect and straighten any bent pins prior to...

Page 17: ...epoxy coating Multilayers have superior radio frequency operating characteristics but the lead welds may fail if the leads are placed under stress while being heated during installation or removal Fo...

Page 18: ...ore attempting to tin If necessary refer back to these instructions at any time during assembly You may now move ahead to the section of the manual that corresponds with your particular kit VEC 1320K...

Page 19: ...orm and each turn is pulled tight before winding the next Spread the windings out distributing over 80 of the form s circumference 15 Trim each coil lead to in length and tin with solder 16 Wind a two...

Page 20: ...Find the 470 pF multilayer capacitor 471 Install at C23 and solder 10 Find the 680 pF multilayer capacitor 681 Install at C24 and solder Find two 2 2 2 uH molded chokes red red gold silver or gold 11...

Page 21: ...er This completes stage 2 construction of the VEC 1330K 30 meter kit After checking for errors you may now move on to the final stage of construction VEC 1340K 40 Meter Transceiver Kit 1 Find the 3 3...

Page 22: ...th your kit 14 Wind thirty 30 turns of 24 enameled wire onto the T50 2 form Note that turns are counted inside the form and each turn is pulled tight before winding the next Spread the windings out di...

Page 23: ...a 470 pF at C23 and solder 6 Install a 470 pF at C25 and solder Locate four 4 820 pF multilayer capacitor 821 7 Install a 820 pF at C14 and solder 8 Install a 820 pF at C24 and solder 9 Install a 820...

Page 24: ...nameled wire on a T50 2 toroid form Install at L4 in an upright position 19 Solder L4 in place 20 Locate the 3 579 MHz crystal metal can two wire leads Install at Y1 and solder This completes stage 2...

Page 25: ...e These items will be used to secure C16 in place 9 Using scissors or a hobby knife cut a by square of double sided tape Install this within the box printed at C16 on the pc board see diagram To orien...

Page 26: ...shaft for C16 Install using a small amount of contact cement or super glue 14 Find the TO 5 type clip on heat sink for Q4 Slip this over the 2N3053 transistor The custom enclosure for your VEC 13xxK...

Page 27: ...sensitive parts Follow this procedure Compare parts locations against the parts placement diagram Was each part installed where it is supposed to be Was the correct value used Start at one side of the...

Page 28: ...his requires the following items 1 50 ohm dummy load A dummy load or any 47 to 51 ohm non inductive resistor capable of handling one watt will provide a satisfactory transmitter termination for testin...

Page 29: ...the outer sleeve If your power wires aren t color coded confirm polarity with a voltmeter before installing the plug DC Power Supply 13 8V 0 5A Important Note In case of accidental reverse power conn...

Page 30: ...eaker Key To test the radio outside of a metal case you ll need to install temporary ground or common leads for the key and speaker jacks Use temporary lenghts of hookup wire or clipleads to make thes...

Page 31: ...alignment and check out connect a low VSWR antenna cut for the band of operation 2 1 or less If you used a LED to test for RF output remove it at this time Under normal conditions you should hear inc...

Page 32: ...e sure to follow all installation instructions carefully Important Note Federal Law requires that you possess a current FCC issued Amateur Radio License of General Class or higher to operate a CW tran...

Page 33: ...t your location Information is also provided for adding a very low cost choke balun to your installation A balun helps eliminate unwanted feedline radiation on transmit and noise pick up on receive He...

Page 34: ...s in receive mode to confirm that Q1 is oscillating Weak Signal no measurable output Check for construction errors Also check polarity of D1 and D2 Vcc should be present on case of Q3 Low Transmitter...

Page 35: ...2N3906 Q4 2N3904 Q1 PN2222 Q2 Front View Q1 Q2 Q3 Q4 E B C E B C Standby Key Down 13 8 13 2 0 13 8 13 0 13 6 0 0 13 8 0 7 7 7 0 0 13 8 0 0 13 8 0 0 0 5 7 6 3 12 6 VOLTAGE CHART Q3 U1 U2 1 2 3 4 5 6 7...

Page 36: ...er Q2 PA Q3 operates in class C and draws current only when RF drive is present Broadband matching techniques are used to eliminate critical tune up steps for the builder A pi section low pass filter...

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Page 38: ...ientation 3 Install the four 1 2 mounting screws next Insert the screws from the bottom through the four holes relatively close to each corner of the chassis 4 Place the four 3 16 round spacers on the...

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