VEC-820K Instruction Manual
CW Filter
INTRODUCTION
Thank you for purchasing the VEC-820K CW Filter kit. The VEC-820K consists
of a four stage, switch selectable band pass CW filter, using selected components
that will make "cleaning up" CW signals effortless and easy. With the VEC-
820K you bring up any hard to hear signal out of a "band pile up," for easy
listening, or get rid of unwanted, annoying signals. The VEC-820K also features
a headphone output that will allow the use of standard monoral headphones.
Although physically small in size, the VEC-820K is high on performance and
reliability. The VEC-820K is powered from a 9-volt transistor radio batterv.
TOOLS AND SUPPLIES
Construction Area: Kit construction requires a clean, smooth, and well-ighted
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 highintensity 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:
