Radio-Handbook_Edition04_1936.pdf

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FOR
AMATEURS
xE
AND
EXPERIMENTERS
The
"RADIO"
Handbook
By
Frank
C. Jones
1936
EDITION
Published
and
Copyrighted,
1936,
by Pacific Radio Publishing
Co.,
Inc.
Pacific Building,
(P.
0.
Box
3278),
San
Francisco,
California
2
The
"RADIO"
Handbook
Equipment
Ready
for
Test
Here
is
a
corner of
the
Test
Laboratory of
THE
"RADIO"
HANDBOOK,
where
the
equipment described
in
these pages
is
given
a
thorough
test
on
the air
c)
The
"RADIO"
Handbook
3
The
+
"WHY"
of
a
Second
Edition
The
"RADIO"
Handbook
of
it
June,
1935,
the publishers
of
the monthly
magazine,
"RADIO,"
the international
technical
authority
for
amateur
radio, released
the
first
edition
of
"The
`RADIO'
Handbook." The work
was
printed
in
a
comparatively small edition
in
order
to
determine the
requirements
of
the amateur
and
attention
was
given
primarily
to
the practical
side
of
high- frequency communication.
Too
often, however,
theory
and
practice
do
not
go
hand
in
hand
in a
field
in
which such
rapid progress
is
being
made as
that
of
amateur short
-wave
voice
and
telegraph
com-
munication.
The
art
is
progressing
so
rapidly and
so
many
innovations
appear
each
month
that
it
is
a
herculean task
to give
the reader,
in
such
compact form,
the
exciting panorama
of
the romantic
field of
com-
munication.
But,
much
of
the
"new"
which
is
presented
to an
unsuspecting
pub-
lic
as
perfection itself has
proved
by
exhaustive
testing
to
be,
unfortu-
nately,
much less
than
perfection.
Frank
C.
Jones,
the engineer
who
developed
the
greater part
of
the
new
equipment
described
in
this, the
second
edition
of "The. `RADIO'
Handbook,"
brought
to
light
many
new
theories
which were
rigidly tested
"on
the
air."
A
theory
was
not
enough.
Paper plans
sometimes have a
way
of
surpris-
ing
the "paper
planner"
unpleasantly,
so
the standard
procedure
adopted was first to
conceive,
then
engineer,
then
design,
then
con-
struct,
if
necessary
then reconstruct again
and
again
and, finally,
when
exhaustive
tests under actual operating
conditions both with
local
sta-
tions
and with
others
in
the far corners
of
the
world have shown
the
worth
of
the
conceptions they
found
their
way
into "The
`RADIO'
Hand-
book."
There
is
nothing
impractical, unsafe
or
insane
in
the
pages
of
this
new
edition.
Theory
gives way to fact.
The
laboratory
is
the
proving-grounds.
All
during
the
period
of
revision,
the writers
were
in
constant
touch with leaders
in
specialized
fields
and
we
take this
opportunity
of
thanking
these
men
who,
content
to
be
anonymous,
so
unselfishly
gave
their
time and
their
experience
that
amateur
radio
might
be benefited.
In
the preparation
of
this
Handbook
the
author
wishes
to
acknowledge
gratefully the assistance
he received
from Ber-
nard Ephraim,
Prof.
F. E.
Terman,
John
N.
Hawkins,
Clayton
F.
Bane
and
D.
B.
McGown.
The
task
of
the writers
of
this
book
has
been a
pleasant
one,
full
of
romances,
thrills,
life!
Many new
fields
are
in
these
pages,
informa-
tion which
has not
previously
been in
print,
or, was
hidden away
in
ponderous scientific papers and weighted with
the
complexities
of
lan-
guage and
of
vocabulary
so
beloved
to
the engineer
and
so
baffling
to
the amateur.
The
market
is flooded
with
textbooks and textbooks are
flooded
with theory, with a
maze
of
conflicting
information
floating
on
the
flood, so
that
the
lay
reader striving
to
swim
rather than
sink
is
quite
N
4
A
The
"RADIO"
Handbook
4
1

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