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Example of spectrum scope centered on the
receiving frequency.
Example of fixed spectrum scope range. |
With the dedicated DSP unit, the spectrum scope provides 80dB dynamic
range of signal processing (the IC-756PROII is 60dB). The scope span
can be set to ±2.5 to ±250kHz in 7 steps, providing wide band signal
analysis.The monitor range can be set independently from the receiving
frequency. You can monitor the band condition between the selected
sweep edges, as well as sweep a selected band width centered on the
receiving frequency in the scope screen.
In addition, the scope has many features including scope attenuator
(10dB/20dB/30dB), 3 types of marker (Main band, Sub band, Transmit),
Max hold function and Main-Sub band one touch switch. The mini scope
function is convenient for continuous monitoring even while adjusting
the set mode.
Mini scope screen |
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Scope BPF characteristics |
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Transmit level setting
screen.
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The built-in audio equalizer has the separate bass and treble adjustment
for a total of 121 combinations, so you can tone your voice up or
down as you want. In addition, the transmit bandwidth is selectable
from 100, 300, 500Hz at the low-pass edge, and 2500, 2700, 2900Hz
at the high-pass edge respectively. 3 types of high and low combinations
can be stored in the memory. With this flexibility of DSP based waveform
shaping, transmit audio quality is adjustable depending on the operating
situation.
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Needle type meter
Bar type meter
Edge width type meter
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Response time, color, resolution, visibility the IC-7800's display
has been examined in all aspects, and an active matrix 7-inch (800
× 400 pixels) TFT color display was selected for the IC-7800. This
large display shows main, sub-band frequencies including various settings
and operating conditions as well as spectrum scope, S-meter and RTTY/PSK31
decoded messages. The S-meter shows near analog like needle swings
that are smooth and accurate. In addition to the 3 styles of digital
meter, the IC-7800 has digital multi-function bar graphic meters to
show various conditions such as Final PA temperature, PA voltage etc.
Further more, the IC-7800 has a VGA connector for an external monitor
and an S-meter connector for an external analog S-meter.
While most HF/50MHz transceivers share the preamp between the HF bands
and 50MHz band, the IC-7800 uses an exclusive preamp and mixer especially
designed for the 50MHz band. This preamp and mixer are tuned to the
50MHz band and improve cross modulation characteristics, particularly
important when picking up a very weak signal close to a strong station.
The Digital Voice Recorder (DVR) is a convenient function for contests,
DX-peditions, field day and even normal operation. Record your callsign,
CQ, or other station information into a memory. Independent "Record
(REC)" and "Play" buttons are on the front panel.
The IC-7800 has a CF card slot and a CF card will be supplied with
the IC-7800. You can store your various settings such as filter, display,
microphone equalizer, etc, on your card. When sharing the IC-7800
with multiple-users such as on a DX-pedition, in a contest or as a
club rig, the CF card allows you to restore your personal settings
instantly.
The IC-7800 is equipped with DSP based twin PBT filtering.It provides
excellent performance on a completely different level from analog
filters. The passband width, shift direction and steps (50Hz) are
graphically displayed on the LCD.
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