Heathkit SW-7800 - Page 20

Page
108
Heathkit
EXT
POWER
Interconnect
socket
for
an
external
11
to 15
VDG
source,
such
as
an
automobile
battery,
capable
of
supplying
at
least
.75
ampere
of
current
ww
In
the
United
States,
National
Bureau
of
Standards
station
WWV
at
Ft.
Collins, Colorado,
transmits
on
frequencies
of
2.5,
5,
10,
15,
and
20
MHz.
This
sta
tion
transmits
a
variety
of
tones,
often
with
a
pulse
(clock-like tone)
each
second,
and
is
periodically
identified
by
voice
announcements.
RECEPTION
GUIDE
This
guide
lists
the
reception
conditions
that
prevail
in
the
spring
and
fall
of
the
year.
These
conditions
are
subject
to
varying
atmospheric
conditions
sunspot
activities,
and
to
some
extent,
weather
con
ditions.
In
the
winter,
reception
generally
will
be
best
on
the
lower
frequency
bands.
In
summer,
re-
ception
will
be
better
on
the
higher
frequency
bands
BAND
FREQUENCY
TIME
ZONE
(meter
MHz)
80
3.5
Morning,
evening
Local
(Amateur)
49
6
Evening
Latin
America
and
Europe
41
7
Evening
Europe
40
7
Morning
Unites
States (Amateur)
40
7
Lateafternoon,
Europe
Evening
31
9
Morning
Asia
and
Australia
31
9
Afternoon
Europe
and
Africa
31
9
Evening
Europe
and Latin
America
25
u
Morning
Asia
and
Australia
25
1
Evening
Latin
America
20 14
Late
morning,
United
States,
afternoon Foreign,
(Amateur)
19
15
Late
morning,
Europe
and
North
afternoon
America
19
15
Evening
North
and
Latin
America
16 17
Afternoon
Europe
16
7
All
day
United
States
16
7
Evening
South
America
13
20
Afternoon
Europe
13
20
All day
United
States
13
20
Evening
South
America
21
Morning,
Distant
early
afternoon
(Amateur)
15
215
Morning,
Worldwide
early
afternoon
u
27
All day
Local
(Citizens
Radio
Service)
10
28
All
day
Distant (Amateur)