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IC-78 HF BASE TRANSCEIVER |
The IC-78 is a high performance HF transceiver. Innovative features such as 99 memory channels, high C/N ratio, direct channel entering, data communication capabilities and more, offer easy operation for anyone.
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Durable, powerful construction
The IC-78 delivers a powerful 100W of output power, providing the talk power
you need to reach the most distant locations. Its one-piece, die-cast aluminum
construction combined with a large heat sink, helps keep internal temperatures
down and ensures that operation is stable at high duty cycles. And its compact
size of 240(W)x 95(H)x239(D) mm makes installation easy.
Simple operation
The IC-78 is equipped with a large easy-to-read LCD. A minimum number of switches
and controls allow for superior feature selectability. Keys access functions
directly- there's no secondary function key. You can enter your operating frequency,
or memory channel number directly from the 10-key pad.
Ample 99 channels with 8-digit channel name capability
An affordable 99 duplex memory channels are available for storing individual
transmit and receive frequencies, operating mode, filter setting, as well as
8-character channel names. You can enter channel assignments easily from the
10-key pad. In addition, an extra 1 call memory is available for storing the
most often used, or most important frequency. An independent, one-touch recall
switch is available.
Superior basic performance
A 4-element system is employed for the 1st receive mixer, providing superior
receive MD, especially from in-band, nearby interfering signals. A well-designed
double-conversion system to help minimize image and spurious responses for better
signal fidelity, is also built-in. A newly designed PLL circuit has been adopted
to improve C/N ratio characteristics. The combination of the 4-element system
mixer and new PLL circuit allows superior basic performance.
Front mounted loud speaker
With the speaker facing the operator, audio sounds can be clearly heard without
impediment during operation. It is no longer necessary to manually increase
the volume to try and capture audio sounds.
High frequency stability
When the optional CR-338 HIGH STABILITY CRYSTAL UNIT is installed, it allows
up to ±0.5 ppm of extremely high stable operation.
Flexible filter selection
An optional IF filter can be installed into the transceiver, providing 5 pass-band
widths selectable in SSB, CW or RTTY modes.
VFO mode operation
For continuous frequency operation, VFO mode operation capability is available.
It is convenient when searching for signals, around the programmed frequencies,
such as short wave broadcasts, etc.
Direct channel selection
A 10-key pad has been adopted on the front panel. A channel number, or an operating
frequency, can be entered from the keypad directly. Also, memory channel editing
is possible. A large channel selector and up/down keys are available to suit
your operating style for your convenience. Total and simple operation is provided!
Noise blanker
To reduce pulse-type noise, a level adjustable noise blanker is built-in. Various
levels of pulse-type noise, such as from car ignitions, etc., can be reduced.
Pre-amp. and attenuator
A pre-amplifier and an RF attenuator are adopted for more pleasant reception.
Convenient when weak signals or extremely strong signals are received, to present
better quality readability.
Cloning capability
Programmed data cloning capability between transceivers is available, so that
an identical transceiver setting can be made immediately.
Built-in 2-tone alarm
The 2-tone alarm for an emergency signal transmission is built-in. Independent
tone switch Is adopted for quick and simple emergency calls.
SQL/RF gain controller
In addition to the squelch control, an RF gain control is available, and the
controller is combined with the squelch control. The RF gain adjusts minimum
response receiver gain, and ignores signals weaker than the pre-set level -
providing pleasant stand-by, or scanning. The SQLIRF GAIN controller action
is selectable from squelch only, RF gain only or combined, in the SET mode according
to your operating style and mode.
Data communications
In addition to the current voice and key operation, FSK (First Shift Keying)
type RTTY mode is available. By connecting a terminal unit or terminal node
controller to the ACC socket on the rear panel, data acquisition and text-base
file transfers and other data communication can be made. On RTTY, shift width,
tone frequencies and polarization are also selectable.
Other features:
| GENERAL | ||
| Frequency range | RX | 30 kHz ~ 29.999999 MHz |
| TX | 1.6 ~ 29.999999 MHz | |
| Mode | USB, LSB, CW, RTTY, AM | |
| Memories | 99 (duplex) + 1 (call) | |
| Antenna connector | SO-239 (50Ω) | |
| Power supply | 13.8Vcc ± 15% | |
| Current drain | RX @ stand-by | 1.3A |
| RX @ max. volume | 2.0A | |
| TX | 20A (max. power) | |
| Frequency stability | < ±200Hz | 1~60 min. after power on |
| ±30 Hz | after 1h, at +25°C | |
| ±350 Hz | 0°C ~ +50°C | |
| Operating temperature | -10°C ~ +60°C | |
| Dimension | 240 (L) x 95 (H) x 239 (P) mm | |
| Weight | 3.8 kg | |
| ACC connector | 13 pin | |
| Remote connector | 2 conductor Ø 3.5 mm | |
| TRANSMITTER | ||
| RF output | SSB/CW/RTTY | 2 ~ 100W |
| AM | 2 ~ 40W | |
| Modulation | SSB | balanced |
| AM | low level | |
| Spurious emission | < -46 dB | |
| Carrier suppression | > 40 dB | |
| Unwanted sideband | > 50 dB | |
| Mic. connector | 8 pin / 600Ω | |
| Key connector | 3 conductor Ø 6.5 mm | |
| Send & ALC connector | phono RCA | |
| RECEIVER | ||
| Receiver system | Double conversion superheterodyne | |
| Sensitivity (10dB S/N) | SSB/CW/RTTY | 0.16μV (1.6 ~ 29.9 MHz) 0.5μV at 12 dB SINAD |
| AM | 13μV (0.5 ~ 1.59 MHz) 2μV (1.6 ~ 29.9 MHz) |
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| Squelch sensibility | < 5.6 μV (SSB) | |
| Selectivity | SSB/CW/RTTY | > 2.1 kHz/-6 dB < 4.5 kHz/-60 dB |
| AM | > 6.0 kHz/-6 dB < 20 kHz/-40 dB |
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| Spurious suppression | >70 dB | |
| RIT variable range | ±1200 Hz | |
| Audio output | > 2.0W on 8Ω with 10% d.a.t. | |
| Phone connector | 3 conductor Ø 6.5 mm | |
| Speaker connector | 2 conductor Ø 3.5 mm / 8Ω | |