The IC-756PROIII’s spectrum scope adds the mini scope function answering the many requests from end users to add this feature. The real time spectrum scope is now an indispensable tool for high-class HF radios. Real time spectrum scope with mini scope function This combination will provide the optimum receiver performance under any conditions. It offers excellent advantages in using narrow band antennas such as a small loop or short Yagi antenna. The preamp-2 is a high gain pre-amplifier using bipolar transistors. It has a high intercept point and covers a wide frequency range. The preamp-1 is a noiseless feedback type with push-pull amplifiers. Both pre-amplifiers of the IC-756PROIII have basically the same circuit construction as the IC-7800’s preamplifiers. The IC-756PROIII has two pre-amplifiers, which offer advantages in bad band conditions. * Under the following conditions: Receive frequency 14.2MHz, Input frequencies 14.3MHz and 14.4MHz, Pre-amp OFF, mode USB BW: 2.4 kHz Newly designed pre-amplifiers The IC-756PROIII realises +30dBm class IP3*. Finally, each stage’s level distribution behind the 1st mixer stage and the AGC gain are optimised. The 15 kHz crystal roofing filter uses the same component as the IC-7800 in the fundamental mode to provide good distortion-free characteristics. To avoid this magnetic saturation, large inductors have been used at the RF stage. Magnetic saturation sometimes occurs in traditional coils when a strong signal is received. At the BPF switching stage, diodes which have superior wide dynamic range frequency characteristics and distortion-free characteristics are used. The front-end mixer at the RF stage is designed in a 4-element configuration. Basic analogue and digital technology used in the IC-7800 has been incorporated into the IC-756PROIII receiver. The IC-756PROIII design focuses on distortion-free receiver performance. +30dBm class IP3 (in 14MHz band), Excellent distortion resistance characteristics With this flexibility of DSP based waveform shaping, transmit audio quality is adjustable depending on the operating situation.
3 types of high and low combinations can be stored in the memory.
In addition, the SSB transmit bandwidth is selectable from 100, 300, 500Hz at the high-pass edge, and 2500, 2700, 2900Hz at the low-pass edge respectively. The built-in audio equaliser has separate bass and treble adjustment for a total of 121 combinations, so you can tone your voice up or down when you want. However, the integration of the latest technology employed in the IC-7800 such as receiver technology, +30dBm class IP3, miniscope makes this new rig the very pinnacle of the IC-756PRO series. The IC-756PROIII incorporates many of the features that made its predecessors so successful.
IC-756PROIII HF/50MHz All Mode Transceiver (Discontinued)
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