Ramsey Electronics FR146, Руководство пользователя

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FR146
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Locating the LED immediately above the on-off switch is logical and ideal. The
simplest way to make a good installation is to drill a neat hole just slightly
smaller than the diameter of the LED. Then, enlarge the hole a little bit at a time
just enough to let the LED be pressed in and held firmly. The resistor may be
connected to either the anode or cathode of the LED, but the anode MUST go
to + DC, with the cathode connected to the nearest common ground point. If
you are wondering why we did not include these pennies worth of parts with
your kit, you can believe any of the following reasons:
(1) We wanted to stretch your battery budget: with the LED drawing about 6
ma, how long will your battery last if you leave your receiver on for a few days,
just like we leave our computers and Ham or computer accessories on all the
time?
(2) We thought you'd have more fun planning and installing your own lamp that
glows in the dark!
(3) We could not decide which color you would like best!
THE RAMSEY ELECTRONICS CASE, KNOB & HARDWARE
OPTION
Your finished receiver can be installed in a variety of enclosures of your own
design and choosing. You might be planning to combine several Ramsey circuit
boards in a single enclosure. Use of the inexpensive and attractive Ramsey
case and knob kit will give your unit that finished look and increase its resale
value. These sturdy black instrument cases are supplied with front and rear
panels, panel stickers, knobs, rubber feet and mounting screws.
OTHER ENCLOSURE RECOMMENDATIONS
While we believe that the Ramsey enclosure and knob option is a fine value for
finishing off your Ramsey receiver or transmitter, we are happy to give you a
couple of additional suggestions. If your first goal is economy and rugged
portability, you will find that the circuit board can be mounted nicely in a
standard VHS videotape storage box, which also gives room for a speaker, or
earphone storage, and even a roll of antenna wire. The controls are easily
mounted at one end of such a box. It may be necessary to cut away the molded
posts which secure the tape cassette itself. These storage boxes come in
several styles, so pick one that looks truly practical as a project enclosure.
To accomplish RF shielding, the most economical metal enclosure nicely suited
for Ramsey amateur kit boards is Radio Shack No. 270-253A. This metal utility
cabinet can accommodate both a receiver and transmitter board, plus speaker,
with room for various refinements you might like to add.