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IMPORTANT WARRANTY INFORMATION!  PLEASE READ 

Return Policy on Kits When Not Purchased Directly From Vectronics:

  Before continuing 

any further with your VEC kit check with your Dealer about their return policy.  If your Dealer 
allows returns, your kit must be returned 

before

 you begin construction. 

Return Policy on Kits When Purchased Directly From Vectronics:

  Your VEC kit may be 

returned to the factory 

in its pre-assembled condition only

.  The reason for this stipulation is, 

once you begin installing and soldering parts, you essentially take over the role of the device's 
manufacturer.  From this point on, neither Vectronics nor its dealers can reasonably be held 
accountable for the quality or the outcome of your work.  Because of this, Vectronics cannot 
accept return of any kit-in-progress or completed work as a warranty item for any reason 
whatsoever.  If you are a new or inexperienced kit builder, we urge you to read the manual 
carefully and determine whether or not you're ready to take on the job.  If you wish to change 
your mind and return your kit, you may--but you must do it 

before

 you begin construction, and 

within ten (10) working days of the time it arrives. 

Vectronics Warrants:

  Your kit contains each item specified in the parts list. 

Missing Parts:

  If you determine, during your pre-construction inventory, that any part is 

missing, please contact Vectronics and we'll send the missing item to you free of charge.  
However, 

before

 you contact Vectronics, 

please look carefully

 to confirm you haven't misread 

the marking on one of the other items provided with the kit.  Also, make certain an alternative 
part hasn't been substituted for the item you're missing.  If a specific 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 
will be clearly noted in an addendum to the manual. 

Defective Parts:

  Today's electronic parts are physically and electrically resilient, and 

defective components are rare.  However, if you discover an item during your pre-construction 
inventory that's obviously broken or unserviceable, we'll replace it.  Just return the part to 
Vectronics at the address below accompanied with an explanation.  Upon receipt, we'll test it.  
If it's defective and appears unused, we'll ship you a new one right away at no charge. 

Missing or Defective Parts After You Begin Assembly:

  Parts and materials lost or 

damaged 

after construction begins

 are not covered under the terms of this warranty.  However, 

most parts supplied with VEC kits are relatively inexpensive and Vectronics can replace them 
for a reasonable charge.  Simply contact the factory with a complete description.  We'll 
process your order quickly and get you back on track. 

Factory Repair After You Begin Assembly:

   

Kits-in progress and completed kits are 

specifically excluded from coverage by the Vectronics warranty

.  However, as a service to 

customers, technicians are available to evaluate and repair malfunctioning kits for a minimum 
service fee of $18.00 (½ hour rate) plus $7.00 shipping and handling (prices subject to 
change).  To qualify for repair service, your kit must be fully completed, unmodified, and the 
printed circuit board assembled using rosin-core solder.  In the event your repair will require 
more than an hour to fix (or $36.00, subject to change), our technicians will contact you in 
advance by telephone before performing the work.  Defective units should be shipped prepaid 
to: 

Vectronics 
1007 HWY 25 South 
Starkville, MS  39759 

Содержание VEC-1120K

Страница 1: ...ific 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 cha...

Страница 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...

Страница 3: ...ster board makes an excellent construction surface and provides protection for the underlying table or desk Well diffused overhead lighting is a plus and a supplemental high intensity desk lamp is esp...

Страница 4: ...ou don t fully heat the connection or when metallic corrosion and oxide contaminate a component lead or pad Solder bridges form when a trail of excess solder shorts pads or tracks together see Solderi...

Страница 5: ...cases to perform new and unfamiliar tasks To avoid making needless mistakes work for short periods when you re fresh and alert Recreational construction projects are more informative and more fun whe...

Страница 6: ...pF 101 1000 pF 102 001 uF 102 01 uF 103 1 uF 104 Value Code 102 001 uF 1 uF As with resistors it s helpful to sort capacitors by type and then to arrange them in ascending order of value Small value c...

Страница 7: ...evice Integrated Circuits Proper IC positioning is indicated by a dot or square marking located on one end of the device A corresponding mark will be silk screened on the PC board and printed on the k...

Страница 8: ...s Note only the first three color bands are given for the molded chokes The fourth band is the tolerance band and may be either gold or silver The following parts are packaged separately VEC 1180 75 8...

Страница 9: ...se inventory the following parts Capacitors Qty Part Description Designation 1 8 2 pF ceramic disc 8 2 C1 1 100 pF ceramic trimmer capacitor C18 1 variable capacitor C19 A B C D 6 1 uF monolithic 1 or...

Страница 10: ...cription Designation 1 RCA jack ANT connector pc mount J1 1 1 4 earphone speaker jack pc mount J2 Miscellaneous Qty Part Description Designation 2 IC sockets 8 pin DIP 1 shaft tuning extension 1 DPDT...

Страница 11: ......

Страница 12: ...ssible this is very important in RF circuits Important Note A monolithic cap is similar to a surface mount chip capacitor except that it has a lead spot welded onto each end of the capacitor body Mono...

Страница 13: ...r 2 Install and solder the 33 uH choke orange orange black at location L3 3 Install and solder one of the 470 pF monolithic capacitors 471 at location C3 4 Install and solder the remaining 470 pF mono...

Страница 14: ...h to the pc board foil and solder 8 Solder the five coil leads This completes the installation of parts unique to the 40 meter receiver Proceed to the section titled GENERAL ASSEMBLY VEC 1130K 30 Mete...

Страница 15: ...olithic capacitor 471 at C4 5 Install and solder the remaining 470 pF monolithic 471 at location C5 Important Note Capacitor C4 is not used in the 80 meter receiver 6 Locate the 211 uH tunable inducto...

Страница 16: ...not be connected or poor solder connections Capacitor Installation 1 Find the 8 2 pF ceramic disc capacitor 8 2 Install and solder at location C1 2 Find the six 1 uF monolithic capacitors 1 or 104 Ins...

Страница 17: ...elow 3 U1 notch towards C8 4 U3 notch towards C15 5 Locate the NE602 NE612 may be substituted in some kits and the LM386 8 pin ICs The IC body has a small notch or key molded at one end indicating pin...

Страница 18: ...re noted both on the circuit board and parts placement diagram If the markings on the capacitor body are unclear the plus lead is always the longer of the two 1 Find the two 470 uF electrolytic capaci...

Страница 19: ...W1 positioning so the push rod faces the board edge see above While holding the switch body flush against the board solder and trim the six switch pins 4 The gain control is mounted next Before instal...

Страница 20: ...the capacitor locate the four internal trimmer capacitors and using a small jeweler s screwdriver or alignment tool fully open unmesh all four trimmers 12 Remove the protective cover from the double s...

Страница 21: ...into the silk screened location for W1 Free end of the insulated wire will be connected during the alignment procedures 19 Insert the other 3 insulated wire into the silk screened location for W2 20...

Страница 22: ...ob set screw with the knob indicator at the 7 o clock position Your kit is finished and it s time to take a well earned break When you come back be sure to give your work a close quality control QC in...

Страница 23: ...alleling capacitor sections For example paralleling the 140 and 82 pF sections will give 222 pF of tuning capacitance combining the 40 and 140 pF sections will give a 180 pF tuning capacitance The tab...

Страница 24: ...55 kHz VEC1140 tuning 302pF N A 262pF N A 222pF N A 180pF 310 kHz 140pF 250 kHz 82pF 150 kHz 40pF 75 kHz VEC1130 tuning 302pF N A 262pF N A 222pF N A 180pF N A 140pF N A 82pF N A 40pF 85 kHz VEC1120...

Страница 25: ...u wish to receive on the direct conversion receiver The receiver should be set to a wide filter bandwidth and if it has a BFO it should be on 6 Install a fresh 9 volt alkaline battery to the receiver...

Страница 26: ...e tool is removed Important Note Allow at least a 10 kHz tuning overlap on the band edges to compensate for aging and long term drifting Using a companion QRP transmitter 1 Connect the QRP transmitter...

Страница 27: ...r capacitor C18 Use one of the following three methods to peak C18 1 Using a signal generator peak C18 for best sensitivity Reduce the signal generator output or reduce the R1 Gain control setting to...

Страница 28: ...ly but are more economical in the long run Tuning CW stations Tune across the band until a CW signal is heard Gain control R1 should be set for a comfortable listening level Carefully adjust the tunin...

Страница 29: ...ter dipole cut for 10 120 MHz would use two wire legs each about 23 12 feet in length Wire legs 23 12 insulators Coax cable 30 meter dipole An alternative antenna for 80 75 and 40 meters is a wave wir...

Страница 30: ...h quality components and proven circuit designs are used in Vectronics kits In very rare instances is a defective component the source of a problem Ninety five percent of the kits returned for factory...

Страница 31: ...shorted or open condition Also radio may not pick up signals in metal building without an outdoor antenna 3 Drifts off frequency rapidly motorboats weak audio Symptoms of a weak battery or insufficien...

Страница 32: ...package The mixer section is an active Gilbert cell design for good conversion gain and low noise figure The LO section uses heavy capacitive loading to minimize frequency drift Tuning is capacitive...

Страница 33: ......

Страница 34: ...install the two L brackets on the chassis using two of the 3 16 screws The longer side of the L bracket must be connected to the chassis using the two holes centered on each edge of the enclosure Refe...

Страница 35: ......

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