II
Introduction
The T-KIT 1
056
Direct-Conversion Receiver Module Board
is
the
result
of
our looking
over
what's
·on
the
kit
market
and in
magazine
coostruction
articles and asking ourselves
if
we
can
offer
something
better
at
an
attractive
price. Our goal
was
a
simple receiver
which
is
genuinely
useable. The
1056
Module
Board
may
be finished
as
a stand-alone receiver
for
travel, den or
office, or incorporated
into
you
own
back-to-the-basics
transceiver or
"trans-receiver"
project.
The simpleness
of
NE602/NE612
direct-conversion
receiver
design contributes
to
the novel
way
we
chose
to
packaue this
kit.· Instead
of
stocking
numerous one-band versions, pushing
you to make band choices
which
you
may
not
be ready
to
make,
we
offer
ONE
model plus ALL
the
parts needed
to
put
it
on (or
change
it
to) any HF ham band
of
interest
to
you. This is good
for
both T-KIT and you: our
inventory
is
much
simpler, and you
. have everything in hand
to
explore
the
reasonable capabilities
of
your
Model
1056
receiver board.
All frequency-determining
parts
are packed in a clearly-marked
packet. SAVE
your
unused coils and
capacitors
in
this
packet,·
T-KIT No. 1.056-LC. Doing so
will
help later,
whether
for
your
own
new
application
or
for
giving
or
selling.
While designed
to
be a single band receiver
for
casual monitoring
of
a ham band, the
Model
1
056
permits
experimenting
with
both
frequency coverage and
transmit/receive
applications. Please
remember
that
experimenting
is
something
we
all
do
on
our
own
or
with
friends
for
fun. As nice as TEN-TEC tries
to
be
to
our
valued customers,
kit
experimenting
is
NOT
a process
which
our
staff
can coach you
through!
As you plan your use
of
this receiver module board, keep in mind
that
the performance
of
ultra-simple receiver
circuits
deteriorates
as the frequency goes up,
particularly
above
15
MHz. While this
kit
includes all parts
to
try
ham bands up
to
28
MHz
(we
also
tried
6 Meters,
but
Engineering said
"forget
it"),
please
do
not
expect
the
same
stability
on
12
or
1 0 meters as
you
will
enjoy
on
160
through
30
meters.
1056-
5
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