IC-7300 HF/50MHz 100W Transceiver – EU version HF/50 MHz /70MHz (50W on 4m) – Receiver system: FPGA Direct Sampling Superheterodine, intermediate frequency: 36kHz (Icom basic manual and sheet) making it possible to simplify the circuit construction.
RF signals are directly converted (ADC) to digital data and processed in the [FPGA] Altera Cyclone IV EP4CE55F2317N perform digital down conversion at IF 36 kHz to IFDSP TI TMS320C6745 – See links below to: IC-7300 Product brochure Eng/EU and ICOM IC-7300 Basic Manual ENG, and VA7OJ’ page
29/1/2016 Icom RS-BA1 Remote Controll Update the Version 1.91
The IC-7300 is now supported (including new IP+ command and real-time spectrum scope screen with waterfal (like IC-7850/51) and other general improvements…. more info to Icom Inc. support web page).
You must have a previous version of the RS-BA1 software installed BEFORE you can update to version 1.91 (v. previous you purchase) RS-BA1が７３００に対応する (ver.1.90 for Japanese users).
New [IP+] Function improves the receiver IMD and the 3rd order intercept point (IP3) performance. When a weak signal is received adjacent to strong interference the ADC is optimized against signal distorsion.
THe IC-7300’s RMDR (reciprocal mixing dynamic range) and Phase Noise characterstics are improved about 15dB (at 1 kHz frquence spacing) comparate to the IC-7200.
Audio Scope Function can be used to observe varius AF (audio frequency) characteristics: compressor level, filter width, notch filter width and keying waveform in the CW mode in the FFT scope with the waterfall function and the oscilloscope.
The combination of the waterfall function and the real-time spectrum scope assists in maximum receiver performance.
Video of the IC-7300 running RTTY JA1UMQ calling CQ on 40m ( 23 01 2016 very easy to look at scope by 夜多蚊倶楽部 )
Icom IC-7300 BASIC MANUAL should make interesting reading.
Icom datasheet says they are using technology found in SDR’s (and other devices) – Direct Sampling SDR combined with a Legacy Superheterodyne back end running a 36 kHz IF & DSP – Real-time Spectrum scope plus an multi-functions display touch-screen.
Icom probably choose to reuse existing DSP’s software developed and engineered for previous latest radios rather than “start from scratch” for their new generation radio starting in IC-7300.
[Note] – Detailed specifications: please see the official sources – All specifications are subject to change without notice – All trademarks belong to their respective holders.- This page is just a non-official overview, where no one should draw any conclusions – All images and versions above is for illustration only. – (tnx)