ALL BAND, ALL MODE, ALL SOLID STATE
The 1C-740 covers all the Amateur HF frequencies from 1.8MHz
to 29.9999MHz, including the new three bands of 10MHz, 18MHz
and 24MHz. It offers not only SSB, but also CW and RTTY (FM
option). All of the circuits in the IC-740
driver and final power stages are completely solid state,
and provide about 100 watts output.
In addition, the low-pass filters switched by the BAND
switch and the band-pass filters selected by an electronic
signal from the CPU, make a no tune-up system.
employs the Icom
DFM (Direct Feed Mixer) system
and up-conversion system to improve a high Receiver
DFM maintains a system where the incoming signals
are directly fed to the first mixer, and the mixer is a high
level Doubly Balanced Mixer developed exclusively by Icom
The up-conversion system uses a high side IF i.e.,
39.7315MHz and in addition high performance third over-tone
crystal filters provide excellent image and IF rejection ratio.
These advanced devices and system give higher spurious
response rejection ratio, higher sensitivity and wider
PASS BAND SHIFT CONTROL
has a built-in Pass Band Shift system that allows
you to continuously adjust the center frequency of the IF
pass-band. By moving the control, you can eliminate
interference from a nearby signal, thus providing clear
reception. It can also be used as a tone control.
When the PBT switch is pushed in, this system acts as a
pass-band tuning system that allows you to continuously
adjust the pass-band up to 800Hz from the upper or lower
side in SSB and CW. The PBT switch provides better
performance to eliminate interference.
DUAL DIGITAL VFO WITH VARIOUS STEPS
The dual digital VFO consists of three digital
Phase-Locked-Loops which are controlled by the Microcomputer
Three tuning frequency resolutions of 10Hz, 100Hz and 1 KHz
steps can be selected with the TUNING RATE switches.
Two separate VFO's can be used independently in the NORMAL
(NOR) operation, and any desired in-band frequencies split
transmit/receive can be used in the SPLIT (SPT) operation.
has a frequency memory for each band. Any in-band
frequency of the VFO A can be stored into the memory, and it
can be recalled at any time.
has a built-in Noise Blanker, VOX, CW Monitor,
APC, SWR detector, and many other circuits for your convenience.
has everything you need to really enjoy HF
operation, in an extremely compact, rugged and full featured