Ramsey Electronics QRP-80, Инструкция по эксплуатации

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QRP-80
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service. We encourage experiments and improvements of basic Ramsey kits,
but we ask that you first get the kit working as designed and understand it -
before making ANY changes. We regretfully cannot offer any other guidance in
modifying our kits. You're on your own, that's what experimenting is all about!
TRANS-RECEIVE OPERATION:
If you plan to use this transmitter with a Ramsey HR-series direct conversion
receiver for portable operation, it will be necessary to work out a receiver
muting and keying sidetone circuit. A matching companion to your transmitter
is the new Ramsey CW-7 CMOS Keyer, with built-in sidetone.
This transmitter is an ideal travel companion to the growing number of portable
shortwave broadcast receivers which feature digitally synthesized tuning,
memories and other features, provided that a BFO for CW-SSB reception is
one of the features. In most cases, transmitter keying can be monitored directly
from such receivers without too much overload, though it may be necessary to
rig a simple switch to mute or attenuate the audio or short the antenna input to
ground while transmitting.
THE RAMSEY ELECTRONICS CASE, KNOB & HARDWARE
OPTION:
Your finished transmitter can be installed in a variety of enclosures of your own
design and choosing. You might be planning to combine several Ramsey
circuit kit boards in a single enclosure. Use of the inexpensive and attractive
Ramsey case and knob set will give your unit that nice finished look and
increase its resale value. These sturdy black instrument cases are supplied
with printed overlays on front and rear panels, 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 and our reasons for them. 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 storing cables, a small homemade keyer, etc. 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 itself. These storage boxes come in
several styles, so pick one which truly looks practical as a project enclosure. To
accomplish RF shielding, the most economical metal enclosure nicely suited
for Ramsey amateur kit board 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.