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.
![compare icom 756 pro ii & iii compare icom 756 pro ii & iii](https://i.ytimg.com/vi/-q-BxKkGE2M/maxresdefault.jpg)
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)