i7610
Technical Report
Volume 1
~ Prole ~
Outstanding HF Experience Right Here…
Icom’s mid class HF transceivers evolved especially with the IC-756, IC756PRO and IC-7600, and were technology leaders in amateur radio. Even
the IC-7610 inherits the genealogy of Icom’s mid class transceivers, but
its development concept, circuitry, adopted devices, and performance are
innovative. The IC-7610 has superior performance and features far beyond
the perception of current mid class HF transceivers. The performance and
features are realized by fusing the proficient digital and analog technologies
of the successive flag ship transceivers, and refined RF direct sampling
technologies developed in the IC-7300.
The Reciprocal Mixing Dynamic Range (RMDR) characteristics show nearby
signal rejection receiver performance, and the IC-7610’s RMDR is 110 dB at 2
kHz separation (Receive frequency: 14.2 MHz, Mode: CW, BW: 500 Hz). This
is an incredible performance for a mid-class transceiver, and it is close to that
of our flagship IC-7851. The IC-7610 also has several flagship grade features,
such as dual, identical, independent receivers and dual independent DIGI-SEL
units for the Main and Sub bands. In addition, dual high-resolution and high
sweep speed real-time spectrum scopes are built in.
The IC-7610 has a high resolution 7-inch wide (diagonal) touch screen LCD,
and a server PC function for remote shack operation. In addition, a variety of
external connectors, such as an external display connector, LAN port, USB
ports for remote operation, are built into the IC-7610. Totally, the IC-7610
gives you not only flagship grade performance and features, but also flagship
grade operability and scalability.
You can feel the flagship grade performance visually, audibly, and tactically.
And you will have an advantage in contests and DX hunting.
Table of contents
Section 01 Panel Description ………………………………………………………01~02
Section 02 Major Features ……………………………………………………… 03~07
Designs and technologies inherited from the IC-7851 ……………………… 03
Two completely independent receivers with identical performance ……………………………… 03
DUALWATCH operation on different bands and in different modes …………………………… 03
Independent DIGI-SEL (Preselector) circuits for the Main and Sub bands …………………… 03
Benefits of the latest digital technologies ……………………………………… 04
RF direct sampling system …………………………………………………………………………… 04
Top class RMDR 110 dB ……………………………………………………………………………… 04
Excellent transmit phase noise characteristics …………………………………………………… 04
Further evolution of the spectrum scope ……………………………………… 05
Dual spectrum scopes with amazing dynamic range ……………………………………………… 05
High resolution waterfall ……………………………………………………………………………… 05
Audio scope for flexible utilization …………………………………………………………………… 05
Various functions and connectors built in ……………………………………… 06
Large 7-inch touch panel LCD ……………………………………………………………………… 06
Easy operation with the Multi-dial …………………………………………………………………… 06
Two USB connectors on the front panel …………………………………………………………… 06
Built-in SD card slot …………………………………………………………………………………… 06
TX voice digital voice memory ……………………………………………………………………… 06
Simple remote operation with the server PC function and LAN port …………………………… 07
Two USB ports for external control ………………………………………………………………… 07
Advanced operations are possible with a variety of I/O terminals ………… 07
External display terminal built in ……………………………………………………………………… 07
BNC connectors for the RX antenna lines ………………………………………………………… 07
Reference signal input terminal built in ……………………………………………………………… 07
Two independent external speaker jacks …………………………………………………………… 07
Section 03 Inside Views ………………………………………………………… 08~09
Section 04 Upgrade Options ………………………………………………………10 ~13
Section 05 Specifications …………………………………………………………14~15
TRADEMARKS
● Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incorporated (Japan) in Japan, the United States, the
United Kingdom, Germany, France, Spain, Russia, Australia, New Zealand and/or other countries.
● Microsoft and Windows are registered trademarks or trademarks of Microsoft Corporation in the United States and/or
other countries.
● All other products or brands are registered trademarks or trademarks of their respective holders.
©2017 Icom Inc.
Section 01
High resolution 7-inch (800×480) wide-type touch screen LCD panel Multi-dial for simple operation
Enhanced voice recorder function.
SD card slot
Two USB ports for simultaneous connection of a PC keyboard and a mouse.
The optional RC-28 can also be connected here and used as a Sub band dial.
Front panel ●
Panel Description
01
Section 01
[RX-ANT IN/OUT] BNC connectors for simple external preamplifier or filter connection.
External reference signal input BNC connector.
LAN port for remote peration.
*RS-BA1's server PC function is included.
Two USB ports for remote control through a PC.
DVI-D external display connector.
IndependentexternalspeakerjacksfortheMainandSubbands.
Rear panel ●
Panel Description
02
Section 02
ANT1
A
NT2
SPLITTER
DIGISEL
MAIN
DIGISEL
SUB
1.8MHz
INT
SP
BPF
BPF
BPF
3.5MHz
50MHz
A/D
AMP
D/A
AF
AMP
D/A
AF
AMP
1.8MHz
BPF
BPF
BPF
3.5MHz
50MHz
A/D
AMP
FPGA
Main band
Sub band
Major Features
Designs and technologies inherited from the IC-7851
Two completely independent receivers
with identical performance
The IC-7610 has dual, completely independent, equally
high performance receiver circuits for the Main and Sub
bands. The circuits are in the stages from the antenna
through the Field Programmable Gate Array, (FPGA), as
illustrated in Figure 02-01 below.
The concept of the IC-7610 is the same as our flagship
model IC-7851, even though there is a difference in the RF
direct sampling system and the double superheterodyne
system. Of course the receiver circuits are designed with
enough isolation to not have any effect on each other.
The received signal is demodulated in the FPGA.
However, the demodulation is done in independent
demodulators inside the FPGA. The AF amplifier stages
are also independent for the Main and Sub bands.
The IC-7610 has two antenna connectors. The
DUALWATCH operation is possible by selecting different
frequency coverage antennas to receive signals, receiving a
signal with the diversity method, and connecting horizontal
and vertical antennas.
This high performance flagship grade DUALWATCH
function enables searching for a signal on the Sub band,
while communicating on the Main band.
Independent DIGI-SEL (Preselector)
circuits for the Main and Sub bands
The IC-7610 is the first in the mid class HF amateur
radio market to employ automatic preselector circuits as
standard.
A preselector is a type of RF filter with sharp skirt
characteristics. Icom decided that the preselector is a
necessary and useful tool in a mid class transceiver,
even though up until now, the preselector had only been
incorporated into our flagship grade transceivers.
The IC-7610’s independent preselector circuits are built
into both the Main and Sub bands.
DUALWATCH operation on different
bands and in different modes
In the IC-7600, the same receiver circuits are used in
both the Main and Sub bands, except the mixer circuit.
Therefore, DUALWATCH operation has some limitations
in the same band and mode. However, the IC-7610 enables
DUALWATCH operation in different bands and modes,
because completely independent and identical performance
receiver circuits are employed.
Figure 02-02 Automatic Preselector
Figure 02-01 Receiver Overview
03
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