Features - Icom IC-730 Instruction Manual

SECTION 2 FEATURES
ALL BAND, ALL MODE, ALL SOLID STATE
The IC-730 covers all the Amateur r H F frequencies from 3.5M Hz to 29.9999M Hz, including the new three bands of 10MHz,
18MHz and 24MHz. It offers not only SSB, but also AM and CW. All of the circuits in the IC-730, including the driver and final
power stages are completely solid state, and provide about 100 watts output.
In addition, the low-pass filters switched by the BAN D switch and the band-pass filters selected by an electronic signal from the
CPU, make a no tune-up system.
OUTSTANDING RECEIVER PERFORMANCE
The IC-730 employs the ICOM D FM (Direct Feed Mixer) system and up-conversion system to improve a high receiver
performance.
The ICOM DFM system is a system the incoming signals are directly fed to the first mixer, and the mixer is a high level Double
Balanced Mixer developed by ICOM.
The up-conversion system uses a high side I F i.e., 39.7315M Hz and 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 dynamic range.
PASS BAND SHIFT CONTROL
The IC-730 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 installed the optional crystal filter, F L-30, 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. It gives more performance to eliminate
interference.
VARIOUS STEPS DUAL DIGITAL VFO
The dual digital VFO consists of a digital Phase-Locked- Loop by which controlled the Microcomputer Control System, and a pre-
mixing circuit.
Three tuning frequency resolutions of 10Hz, 100Hz and 1kHz steps are selectable with the TUNING RATE switches.
Two separate V FO's can be used independently in the NORMAL (NOR) operation, and any desired in-band frequencies split
transmit/receive in the SPLIT (SPT) operation.
MEMORY CHANNELS
The IC-730 has a frequency memory for each band. Any in-band frequency of the V FO A can be stored into the memory, and it
can be recalled at any time.
ADDITIONAL CIRCUITS
The IC-730 has a built-in Noise Blanker, VOX, CW Monitor, APC, SWR detector, and many other circuits for you convenience.
The IC-730 has everything you need to really enjoy HF operation, in an extremely compact, rugged transceiver.
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