Important Notices
Descriptions
Dualwatch, Dual Spectrum Scope Control

The dualwatch operation and dual spectrum scopes with the waterfall functions* can be used on your remote PC. MAIN and SUB spectrum scopes can be observed on the RS-BA1 at the same time. Of course, the RS-BA1 can be used with Icom single receiver transceivers.
* The dualwatch and dual spectrum scope functions are only for the IC-7851, IC-7850, IC-7760 and IC-7610. The spectrum scope functions (single receive) are usable with the IC-7300, IC-9700, IC-705 and IC-905.
Most Functions Can Be Controlled
Most functions and modes of your transceiver, including interference rejection functions and IF filter settings, can be controlled using the CI-V commands. The following functions are added to the RS-BA1 Version 2.
- Panel size can be enlarged (Normal or large size selectable)
- Indicator click operation to change the settings
- RIT and ⊿TX functions
- [MUTE] button
- SUB dial
Low Latency, High Quality Audio Over an IP Network

The RS-BA1 offers real-time operation with low latency, high quality audio. You can use the transceiver installed in another room using your home network, or even from a remote location over the Internet*.
* A static public IP address or Dynamic DNS is required for the base station (Server) PC, when you configure the remote control system through the Internet.
Functions Compatibility Chart
IC-7851 IC-7850 IC-7760 IC-7610 |
IC-7800 IC-7700 |
IC-7600 | IC-7410 IC-9100 |
IC-7300 | IC-7200 | IC-7100 | IC-9700 | IC-705 IC-905 |
|
---|---|---|---|---|---|---|---|---|---|
Dualwatch Function |
✓ |
- |
- |
- |
- |
- |
- |
- |
- |
Server Function |
✓ |
✓ |
- |
- |
- |
- |
- |
✓ |
✓ |
Remote Power ON/OFF |
✓ |
✓ |
✓ |
- |
✓ |
- |
✓ |
✓ |
✓ |
Spectrum Waterfall Scope |
✓ |
- |
- |
- |
✓ |
- |
- |
✓ |
✓ |
Scroll Mode |
✓ |
- |
- |
- |
✓ |
- |
- |
✓ |
✓ |
APF AF Level Adjustment |
✓ |
✓ |
✓ |
- |
- |
- |
- |
- |
- |
CW Keyer |
✓ |
✓ |
✓ |
✓ |
✓ |
- |
✓ |
✓ |
✓ |
Voice Recording/Playback |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
USB Dial with Optional RC-28 |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ : Function available. - : Function Not available.
*Depending on your transceiver, some functions or modes cannot be used, or you need to update
the transceiver’s firmware.
Please use the latest firmware version of the transceiver.
Specifications
PC (Base station or Remote station)
* When only one transceiver and one PC are connected to the Server PC.
Operating System |
Windows 11 (64 bit), |
|
---|---|---|
CPU |
1.8 GHz Processor or better |
|
Memory |
Windows 11 (64 bit): 4 GB or more |
|
Hard disk space |
150 MB or more of available disk space |
|
Network data speed (When the default audio quality is used) |
To use the Dualwatch function (IC-7851/IC-7850/IC-7760/IC-7610) |
For the Base station: |
Other models (Other than the IC-7851/IC-7850/IC-7760/IC-7610) |
For the Base station: |
|
Display Resolution |
1024 × 768 pixels (enlargeable) |
|
Other |
Speaker and microphone or headset (purchase separately) |
This is the minimum system requirement to use the RS-BA1 Version 2.
Because the system requirements may differ, depending on your PC environment (permanently running software such as antivirus software, peripheral devices, network condition, settings of OS and other software), the operation is not guaranteed.
All stated specifications are subject to change without notice or obligation.
Supplied Accessories
- USB flash drive (#22) or CD (#12) (including RS-BA1 installer, instruction manual, USB driver and USB driver installation guide)
- USB cable (A-B type)
- Installation guides
Note for original version RS-BA1 users: Free upgrade service from RS-BA1 to RS-BA1 Version 2 is not available. To obtain the new features in the RS-BA1 Version 2, the purchase of a new software package is required.
All Mode
Catalogs / Brochures
Brochures Name | Size |
---|---|
RS-BA1 Version 2 | 1.36MB |
HAM Radios and Receivers | 6.90MB |
HAM Radios and Receivers (European Edition) | 6.98MB |
Instruction Manual / Guides
Name | Model Name | Note |
---|---|---|
Remote Encoder for RS-BA1 | RC-28 | |
Preparations Version 2.70 | RS-BA1 Version 2 | |
Instruction Manual Version 2.70 | RS-BA1 Version 2 | |
Installation Guide for Windows 11/10/8.1 USB3.0 Supported | USB Driver (Ver.1.30) CS-7100/CS-9100/CS-9700/CS-R8600/IC-7300/RS-BA1/RS-R8600 | |
Installation Guide for Windows 11/10 | USB Driver IC-705/IC-905/ID-52A/ID-52E/ID-50A/ID-50E/ID-52A PLUS/ID-52E PLUS/IC-7760/RS-BA1 Version 2 |
Firmware / Software
Type | Model Name | Version | Last Update |
---|---|---|---|
USB Driver | IC-705/IC-905/IC-R15/ID-52A/ID-52E/ID-50A/ID-50E/ID-52A PLUS/ID-52E PLUS | Version 1.50 | 2024.07.12 |
USB Driver | IC-705/IC-905/ID-52A/ID-52E/ID-50A/ID-50E | Version 1.30 | 2023.07.28 |
Control software | RS-BA1 Version 2 | Version 2.70 | 2024.08.28 |


Ingress Protection (IP) Code
Ingress Protection (IP) ratings define the level of protection provided by enclosures to prevent the ingress of foreign objects (dust) and liquid into the electrical equipment.
International Standard IEC 60529 outlines an international classification system that describes the sealing characteristics of electrical equipment.
The classification system uses the “IP” code, or “Ingress Protection” code, to define the level of seal.
An IP number contains two numbers (i.e. IP67) in most instances which relate to the level of protection provided by an enclosure or housing.
Either number may be shown as “X” (i.e. IPX6 / IP7X) to indicate the “X” part is not tested.


Degrees of Solid Particle Protection – 1st Digit
IP6x | No ingress of dust; complete protection against contact. (Dust tight) |
---|---|
IP5x | Protected from the amount of dust that would interfere with normal operation. (Dust protected) |
Degrees of Liquid Ingress Protection – 2nd Digit
IPx8 | Protected against continuous immersion in water. Depth and duration specified by model. |
---|---|
IPx7 | Protected against temporary immersion in water for 1 m (3.3 ft) for 30 minutes |
IPx6 | Protected against water projected by powerful jets from any direction. 100 L per minute by a powerful jets (12.5 mm) for 3 minutes. |
IPx5 | Protected against water projected by jets from any direction. 12.5 L per minute by a nozzle (6.3 mm) for 3 minutes. |
IPx4 | Protected against water splashed against the equipment from any direction |
