Vectronics VEC-1402K - Manual (Page 4)

VEC-1402K Instruction Manual 2 Meter Pre-Amp Kit
2
INTRODUCTION
Now you can soup-up your 2-meter receiver or scanner with a 16-dB boost. The
VEC-1402K breathes new life into "deaf" receivers and marginal antenna
systems. Unlike low-cost GaAsFET preamps, this kit uses a high-quality
microwave-type bipolar transistor that features exceptional low-noise
performance and good immunity from damaging electrostatic discharge. A
high-Q LC-tuned input filter fights overload from out-of-band signals, and
careful output matching ensures efficient energy transfer into your 50-ohm
feedline. In addition to covering 2-meters, the VEC-1402K can boost other
frequencies in the 135-165 MHz commercial 2-way FM and WeFAX radio
spectrum with only minor retuning. Although big in performance, the preamps
are small in size (1" x 1-1/2"), and you can power them locally or remotely at the
antenna with 9-14 volts dc.
TOOLS AND SUPPLIES
Construction Area: Kit construction requires a clean, smooth, and well-lighted
area where you can easily organize and handle small parts without losing them.
An inexpensive sheet of white poster board makes an excellent construction
surface, while providing protection for the underlying table or desk. Well-
diffused overhead lighting is a plus, and a supplemental high-intensity desk lamp
will prove especially helpful for close-up work. Safety is an important
consideration. Be sure to use a suitable high-temperature stand for your
soldering iron, and keep the work area free of combustible clutter.
Universal Kit-building Tools: Although your particular kit may require
additional items to complete, virtually all construction projects require a work
area outfitted with the following tools and supplies:
! 30 to 60 Watt Soldering Iron
! High-temperature Iron Holder with Moist Cleaning Sponge
! Rosin-core Solder (thin wire-size preferred)
! Needle Nose Pliers or Surgical Hemostats
! Diagonal Cutters or "Nippy Cutters"
! Solder Sucker, Vacuum Pump, or Desoldering Braid
! Bright Desk Lamp
! Magnifying Glass
Special tool for this kit: Hex-head insulated tuning tool.
BEFORE YOU START BUILDING