The new Icom IC-7300 SDR HF/6m Transceiver

by Adam Farson VA7OJ/AB4OJ

********  Hot News! Firmware V1.14 is downloadable from the Icom Japan Global website. Click link below. ********

The IC-7300 is the first direct-sampling/DUC SDR transceiver from a Japanese amateur radio manufacturer.

Fig.1: IC-7300 front view. Click for larger image. Courtesy Icom Inc.
IC-7300 front panel. Click for larger image.

 

Fig.2: IC-7300 rear panel. Courtesy Icom Inc.
IC-7300 rear panel. 

Fig.3: IC-7300 spectrum scope screen. Courtesy Icom Inc.
 IC-7300 spectrum scope screen. Courtesy Icom Inc.

 

Fig.4: IC-7300 autotuner. Courtesy Icom Inc.
IC-7300 autotuner. Courtesy Icom Inc.

 

Fig.5: Internal speaker, baffled by die-cast chassis. Courtesy Icom Inc.
Internal speaker, baffled by die-cast chassis. Courtesy Icom Inc.

Fig.6: Top interior: RF, PA Units. Courtesy IØGEJ.
Top interior view: RF, PA & SDR Units. Courtesy I0GEJ.

Fig.7: Bottom interior: ATU, Main Unit. Courtesy IØGEJ.
Bottom interior view: ATU & RF Unit. Courtesy I0GEJ. 

Fig.8: Simplified IC-7300 RX & TX block diagram. Courtesy Icom Inc.
Simplified IC-7300 RX & TX block diagram. Courtesy Icom Inc.

 

Fig.9: IC-7300 RMDR & phase noise curves. Courtesy Icom Inc.
IC-7300 RMDR & phase noise. Courtesy Icom Inc.

 

Fig.10: Audio spectrum analyser/oscilloscope screen. Courtesy IØGEJ.
Audio spectrum analyser/oscilloscope screen. Courtesy I0GEJ.

 

Fig.11: Firmware upgrade screen*. Courtesy JP7GRU.
 Firmware upgrade screen. Courtesy JP7GRU.

 

Fig.12: Band/frequency entry keypad menu.
Band/frequency entry keypad menu.

 

Fig.13: Frequency change on touch-screen. Courtesy IØGEJ.
Frequency change on touch-screen. Courtesy I0GEJ.

 

Fig.14: The IC-7300 at Orlando HamCation 2016. Courtesy Icom America Inc.
IC-7300 at Orlando HamCation 2016. Courtesy Icom America Inc.

 

Fig.15: Audio SA & scope, at Orlando Hamcation. Courtesy IØGEJ & AB4BJ.
Audio SA & scope, at Orlando Hamcation. Courtesy IØGEJ & AB4BJ.

 

Fig.16: Screenshot capture (NPR test).
Screenshot capture (NPR test).

 

Fig.17: Screenshot capture: SWR graph, 75Ω load.
Screenshot capture: SWR graph, 75Ω load.

 

Fig.18: Screenshot capture: Spectrum scope resolution BW ≤ 50 Hz.
Screenshot capture: Spectrum scope resolution BW ≤ 50 Hz.

 

Fig.19: Spectrum scope with Dave N9EWO's settings. Click for PDF.
Spectrum scope with Dave N9EWO's settings. Click for PDF.

We are pleased to announce the new IC-7300, which was unveiled at Tokyo HamFair 2015 (August 22-23, 2015).


Here are some salient features:


*Note on Firmware:

The latest IC-7300 firmware release is V1.14 (27 May 2016). This version incorporates a number of improvements and bugfixes (see release page).


Sidebar: A note on the new IP+ feature

From the Japanese-language IC-7300 Instruction Manual. Translated by N. Oba JA7UDE

IP plus (IP+) Feature:

This feature improves the receiver IMD (Intermodulation Distortion) by making the best use of the direct sampling architecture.

It optimizes the level of the ADC (Analogue/Digital Converter) for strong input signals in order to reduce distortion. It also minimizes the reduction in sensitivity for weak signals and improves IP3 (3rd order intercept point).

Fig.20: IP+ Softkey. Courtesy Icom Inc.
IP+ softkey. Courtesy Icom Inc.
  1. Push FUNCTION.
  • The FUNCTION window opens.
  1. Touch IP+.
  • Every touch toggles the IP+ feature ON or OFF.
  • ON for better IP (linearity), OFF for better sensitivity.
Fig.21: IP+ Indicator. Courtesy Icom Inc.
IP+ indicator. Courtesy Icom Inc.
  1. Push EXIT to close the FUNCTION window.

The IC-7300 IP+ (Intercept Point Plus).feature activates on-chip Dither and Randomization in the ADC.  IP+ has two selectable modes; ON (optimum linearity) and OFF (optimum sensitivity).

Further reading: ADI Tutorial MT-004

 


Video: The IC-7300 at Tokyo HamFair 2015.


FCC ID: AFJ376500, granted 24 February 2016.

Industry Canada Certification: 202D-376500.

Links:

My IC-7300 User Evaluation & Test Report

Icom Japan IC-7300 Product Description PageUS/Canada  EU

Icom Japan Firmware V1.14 Page 

Icom America IC-7300 Page

Icom America Blog: IC-7300

Icom UK IC-7300 Page

IC-7300 Basic Manual Rev. 4

IC-7300 Full Manual Rev. 5

Tips for USB Port Settings

IC-7300 Block Diagram & Schematics

IC-7300 and IC-7850/51 USB Port Setting Manual V1.0

TX Factor Video: Configuring the RS-BA1 software with the IC-7300

IC-7300 Product Brochure:  US/Canada   EU

IC-7300 Preliminary Brochure

IC-7300 Video from Tokyo HamFair 2015, by IZØKBA

IC-7300 HamFair Video with commentary in English

The IC-7300 at Orlando HamCation 2016, by AB4BJ

Dave, N9EWO's IC-7300 Review (enhanced)

Dave N9EWO's Spectrum Scope Settings

IC-7300 Yahoo Group

Inrad RX-7300 RX antenna jack kit for the IC-7300


Note: The bandwidths for the sensitivity specifications in the IC-7300 brochure and web page are as follows:
  • SSB/CW: 2.4 kHz
  • AM: 6 kHz
  • FM: 15 kHz

Copyright © 2015-16 A. Farson VA7OJ/AB4OJ.  All rights reserved. Images: contributors as noted.
Last updated: 11/06/2017

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