Features - Icom ic-751a Instruction Manual

SECTION
1
FEATURES
COMPLETE
HF RADIO
•ALL
BAND,
ALL
MODE
The IC-751A covers
all
Amateur
HF
frequencies
from
1.8MHz
to
ALL SOLID-STATE
30MHz,
including the three
new
bands of
10MHz,
18MHz
and
24MHz.
It
also offers
SSB,
CW, AM,
FM
and
RTTY
operating
modes
as
standard
features. All circuits in
the
IC-751A, including
the driver
and
final
power
stages,
are
completely
solid-state
produc-
ing a final
output
power
of
100
watts.
The IC-751A
features general
coverage
receive capability
with
a
tuning range
from 100kHz
to
30MHz.
This
wide
range
is
accom-
plished
by means
of up-conversion using
a
high
side IF
and
a
CPU
control system.
For
CW
(Jperators,
both semi
break-in
and
full
break-in are
provided
for
smooth,
fast
and
natural
CW
conversations.
OUTSTANDING
RECEIVER
PERFORMANCE
• ICOM'S
DFM SYSTEM
The
ICOM
DFM
(Direct
Feed Mixer) feeds the
incoming
signals
directly into a
high
level first
mixer developed by
ICOM.
This
advanced system produces
a
higher spurious response rejection
ratio,
a
higher
receiver sensitivity
and
a
wider
dynamic
range.
• 105dB
DYNAMIC RANGE
The
IC-751
A
has
a
105dB dynamic
range.
Even with the
PREAMP
switched
ON,
the
dynamic
range
is
approximately
lOOdB.
•
PREAMP
AND ATTENUATOR
Both
a
lOdB
preamplifier
PLUS
a
20dB
attenuator are installed as
INCLUDED
standard equipment.
The
preamplifier increases receiver sensitivity
while the attenuator provides
added
protection
from intermodula-
tlon problems.
NEWLY
DEVELOPED
CPU
•VARIOUS SCANNING FUNCTIONS Memory
Scan allows
monitoring
of
all
memory
channels or only
those storing
a
particular
mode. Programmed Scan
provides scan-
ning
between any
two programmed
frequencies.
Mode
Scan
auto-
matically
monitors only
memories
containing frequencies
with
a
similar
mode.
In
all
cases,
the
Auto-stop function halts
the scan
when
a
signal
is
received
and
the
Resume
function
restarts
the
scan
when
the
frequency
is
clear.
•32
MEMORIES
Thirty-two
programmable memories
are
provided to store
mode
and
frequency, and the
CPU
is
backed
up
by an
internal
lithium battery
to
maintain the
memories
for
up
to ten
years.
Scanning of
fre-
quencies or
memories
is
possible
from
either the
transceiver or the
HM-36
scanning
microphone.
The
IC-PS30 external
AC
power
supply was developed especially for
ICOM
base radios
and matches the
style
and
size
of the IC-751 A.
This
power
supply uses
a
recently
designed switching regulator,
resulting
in
light
weight and high efficiency.
• IC-2KL The IC-2KL
is
a
completely
solid-state,
HF
broadband
linear
am-
plifier
with
500 watts output
to give
your
signal
the extra boost
needed
for solid contacts
when
propagation
is
poor.
OPTIONS AVAILABLE
•
IC-PS30
•
GENERAL COVERAGE RECEIVER
•
FULL
BREAK-IN
FUNCTION
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