Vectronics VEC-830K Instruction

Single side-band filter kit

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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
Return Policy on Kits When Purchased Directly From Vectronics: Your VEC kit may be
in its pre-assembled condition only.
returned to the factory
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.
wish to change your mind and return your kit, you may--but you must do it
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.
before you
However,
contact Vectronics,
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:
specifically excluded from coverage by the Vectronics warranty.
service to customers, technicians are available to evaluate and repair malfunctioning kits for a
minimum service fee of 518.00 (1/2 hour rate) plus 57.00 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. 1n the event your repair will require
more than an hour to fix (or 536.00, subject to change), our technicians will contact you in
advance by telephone before performing the work. Defective units should be shipped prepaid
Vectronics
1007 HWY 25 South
Starkville, MS 39759
When shipping, pack your kit well and include the minimum payment plus shipping and
handling charges (525.00 total). No work can be performed without pre-payment. Also, provide
a valid UPS return address and a day time phone number where you may be reached.
before you
begin construction.
The reason for this stipulation is,
please look carefully
to confirm you haven't misread
Kits-in progress and completed kits are
If you
before you
begin
However, as a

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Summary of Contents for Vectronics VEC-830K

  • Page 1 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.
  • Page 2: Tools And Supplies

    INTRODUCTION Thank you for purchasing the VEC-830K Single Side-Band Filter kit. The VEC-830K is a four stage, switch selectable filter, that will make "cleaning up" Single Side-Band signals effortless and easy. With the VEC-830K you bring up any hard to hear signal out of a "band pile up," for easy listening, or get rid of unwanted, annoying signals.
  • Page 3 VEC-830K Instruction Manual Single Side-Band Filter Kit BEFORE YOU START BUILDING Experience shows there are jour common mistakes builders make. Avoid these, and your kit will probably work on the first try! Here's what they are: 1. Installing the Wrong Part: It always pays to double-check each step. A 1K...
  • Page 4 VEC-830K Instruction Afanual Single Side-Band Filter Desoldering Tips: If you make a mistake and need to remove a part, follow these instructions carefully! First, grasp the component with a pair of hemostats or needle-nose pliers. Heat the pad beneath the lead you intend to extract, and pull gently. The lead should come out.
  • Page 5 VEC-83 OK Instruction Manual Single Side-Band Filter I0Ks, etc.). Next, sort each group by specific value (1K, 2.2K, 4.7K. etc.). This procedure makes the inventory easier, and also makes locating specific parts more convenient later on during construction. Some builders find it especially helpful to arrange resistors in ascending order along a strip of double-sided tape.
  • Page 6 VEC-830K Instruction Manual Single Side-Band Filter Kit Transistors: If transistors are installed incorrectly, damage may result when power is applied. Transistors in metal cases have a small tab near the emitter lead to identify correct positioning. Semiconductors housed in small plastic cases (TO-92) have an easily-identified flat side to identify mounting orientation.
  • Page 7: Parts List

    LM747 Op Amp IC Ul, U2 14-Pin Low Profile IC Socket For U1, U2 4P4T Slide Switch 6" insulated wires Circuit wiring 4-40 x 1/4" Phillips Machine Screws 9-volt battery snap; 8" GND, VCC Single Sided PC board VEC-830K Instruction Manual...
  • Page 8: Parts Placement Diagram

    VEC-830K Instruction Manual Single Side-Band Filter Kit PARTS PLACEMENT DIAGRAM Figure 1...
  • Page 9 VEC-830K Instruction manual Single Side-Band Filter STEP-BY-STEP ASSEMBLY Before assembling your kit, please take time to read and understand the VEC kit warranty printed on the inside cover of this manual. Also, read through the assembly instructions to make sure the kit does not exceed your skill level. Once you begin construction, your kit will be non-returnable.
  • Page 10 VEC-830K Instruction Manual Single Side-Band Filter 7. Insert R4 into its mounting holes so the resistor body rests against the board. Solder in place and trim the leads. 8. Locate resistor R5. This is a 150K ohm resistor (brown-green-yellow- gold).
  • Page 11 VEC-830K Instruction Manual Single Side-Band Filter Kit Locate capacitor C4 This is another polystyrene capacitor (1000pF). and will be marked (actual value in Carefully install "1000J" pF). the same manner as solder in place, and trim the leads. Locate capacitor C5 This is another polystyrene capacitor (1000pF).
  • Page 12 VEC-830K Instruction Manual Single Side-Band Filter Kit 34. Locate the hole on the circuit board labeled INPUT. Insert one of the 3" wires into this hole, solder in place and trim the lead. 35. Locate the hole on the circuit board labeled GND. Insert the remaining 3"...
  • Page 13 EC-830K Instruction Manual Single Side-Band Filter 48. Connect wire located at Point #4 to Point A on SW1. Solder in place and trim the lead. 49. Locate capacitor C9 (IOuF). This is an electrolytic type capacitor and will be marked "lOuF" with an arrow pointing to the negative end. 50.
  • Page 14: Testing And Alignment

    TESTING AND ALIGNMENT The best way to test the VEC-830K is with a calibrated audio signal generator and oscilloscope. However, the VEC-830K does not require any alignment. The filter has three switch selectable selectivity cutoff points, Hi-Pass, 2.5kHz, 2.0kHz, and 1.5kHz.
  • Page 15 VEC-830K Instruction Manual Single Side-Band Filter Probably the best method of seeing if the VEC-830K is working, or not, is to listen to some "on the air" side-band signals. Then using SW1, select the filter cutoff position that best cleans up the signal being received.
  • Page 16: In Case Of Difficulty

    VEC-830K Instruction Manual Single Side-Band Filter Kit Placement" section Figure 1 for the location of the point labeled GND on the circuit board. Neat, turn the receiver volume all the way down, then clip the 9-volt battery to battery snap. Set SW 1 to the far left position (Hi-Pass). Now turn the receiver up slightly so you can hear the received signals on the external speaker.
  • Page 17 ENCLOSURE Vectronics has designed a matching enclosure just for your VEC-830K SSB Audio Filter Kit. The matching enclosure is an all metal box which includes knobs, hardware, decals, and rubber feet. The Vectronics model number for...

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Vec-830kc

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