Version 1.
Preface D-Link reserves the right to revise this publication and to make changes in the content hereof without obligation to notify any person or organization of such revisions or changes. Manual Revisions Revision Date 1.00 August 19, 2015 Description • Initial release Trademarks D-Link and the D-Link logo are trademarks or registered trademarks of D-Link Corporation or its subsidiaries in the United States or other countries.
Table of Contents Table of Contents Preface ................................................................................. i Manual Revisions ........................................................................... i Trademarks ...................................................................................... i Power Usage.................................................................................... i Product Overview ..............................................................
Table of Contents WPA/WPA2 ............................................................................52 Troubleshooting ..............................................................54 Wireless Basics .................................................................56 Tips...................................................................................................57 Technical Specifications ..................................................58 GPL Code Statement......................................
Section 1 - Product Overview Package Contents DAP-1620 AC1200 Wi-Fi Range Extender :L )L &RQ¿JXUDWLRQ 1RWH Wi-Fi Configuration Card Quick Installation Guide If any of the above items are missing, please contact your reseller.
Section 1 - Product Overview System Requirements Network Requirements Web-based Configuration Utility Requirements D-Link DAP-1620 User Manual • A wireless router with an active Internet connection. • IEEE 802.11ac, 802.11n, 802.11g, 802.11b or 802.
Section 1 - Product Overview Introduction Features Easily Extend Your Existing Network The DAP-1620 AC1200 Wi-Fi Range Extender lets you easily extend a secure wireless network with a press of a button. Connect the DAP-1620 to a router via Wi-Fi or Ethernet and share your high-speed Internet access in more places throughout your home or small office. High-speed Wireless Performance With Wireless 802.
Section 1 - Product Overview What is a Wireless Extender? The DAP-1620 acts as a repeater to extend the range of an existing wireless network to provide a better signal for parts of your home or office that may have poor or no reception. Your existing wireless signal will be re-broadcast by the DAP-1620, allowing you to reach the farthest corners of your home or office.
Section 1 - Product Overview Hardware Overview Front 1 2 3 1 Status/WPS LED 2 WPS Button Press to establish a connection with another WPS compatible device. See page “WPS Button” on page 42 for more information. 3 Signal Indicator LED The more lit green bars on the Signal Indicator LED, the better the wireless signal to the host network. A single solid amber LED indcates a weak Wi-Fi signal.
Section 1 - Product Overview Status/WPS LED Indicator Status/WPS LED Indicator LED Indicator Color Green Power/Status Status Solid Blinking Red Solid Amber Blinking None Off D-Link DAP-1620 User Manual Description The DAP-1620 is powered on and connected to a host network. WPS mode is active. The DAP-1620 is powering on or an error has occured. The DAP-1620 is not connected to a host network. Device is not receiving power. Check the power outlet.
Section 1 - Product Overview Hardware Overview Bottom 1 1 LAN 2 Reset Button D-Link DAP-1620 User Manual 2 Connect an Ethernet cable if adding wireless to wired network. Use an unfolded paperclip to press and hold the reset button on the bottom of DAP-1620 for 10 seconds to restore the factory default settings.
Section 2 - Installation Hardware Overview Back Locate the Wi-Fi name (SSID) and password for your DAP-1620. This information is printed on the specification sticker on the back of the device. You will need this information to connect your computer or mobile device to the default network (SSID) of your DAP-1620. This information is also provided on the Wi-Fi configuration card. ADD needs to change this: • 2.
Section 2 - Installation Installation Wireless Installation Considerations The DAP-1620 lets you access your network using a wireless connection from virtually anywhere within the operating range of your wireless network. Keep in mind that the number, thickness and location of walls, ceilings, or other objects that the wireless signals must pass through may limit the range. Typical ranges vary depending on the types of materials and background RF (radio frequency) noise in your home or business.
Section 2 - Installation Hardware Setup Plug in the DAP-1620 to a power outlet. Verify that the power LED is blinking amber before continuing with configuration.
Section 3 - Configuration Getting Started There are several configuration tools you can use to set up your DAP-1620. • WPS PBC - To easily extend an existing wireless network refer to “WPS-PBC Configuration” on page 12 for setup instructions. • QRS Mobile App - Use your Android device or iPhone, iPad, or iPod touch to configure your extender. Refer to “QRS Mobile App Setup” on page 14 for setup instructions.
Section 3 - Configuration WPS-PBC Configuration NOTE: To connect to a wireless router or AP and extend the Wi-Fi network in your home, please make sure the source router or AP features a WPS Button or has a virtual WPS Button. Step 1 - Initiate WPS Mode Wait until the Status/WPS LED is blinking amber. Push the WPS button on the source wireless router or AP, and then push the WPS button on the DAP-1620. The Status/WPS LED will start to flash green. Please allow up to two minutes for the process to finish.
Section 3 - Configuration Assessing Your Uplink Signal Strength The Status/WPS LED will turn solid green when the DAP-1620 has connected successfully to the source wireless router or AP. If the Signal Indicator LED has a single amber bar after the connection process has finished, the DAP-1620 has established a poor quality connection. The more lit bars on the Signal Indicator LED, the better the wireless signal.
Section 2 - Installation QRS Mobile App Setup The DAP-1620 can be set up from your iPhone, iPod touch, iPad, or Android smartphone or tablet device using the QRS Mobile app. Note: The screenshots may be different depending on your mobile device’s OS version. Step 1 Search for the free QRS Mobile App on the Apple App Store or Google Play. Step 2 Once your app is installed, you may now configure your extender. Connect to the router wirelessly by going to your wireless utility on your device.
Section 3 - Configuration Click Start to continue. Click Next to continue.
Section 3 - Configuration QRS Mobile will first detect your DAP-1620, then scan for available Wi-Fi networks. Select the network you wish to extend. Tap Rescan if your network doesn’t show up the first time. Enter a password for the existing Wi-Fi network. Click Next to continue.
Section 3 - Configuration Enter a network name (SSID) and password for the extended Wi-Fi network. Click Next to continue. Create an admin password for the DAP-1620’s web-based configuration utility. Click Next to continue.
Section 3 - Configuration A summary of your settings will be displayed. Click Save to reboot the device and to complete the setup. After the setup wizard is complete, the following screen will appear. To connect to the extended network, you can now change your mobile device and laptop Wi-Fi settings to the wireless network name and password you just created. You can also share your Wi-Fi information by clicking Share by E-mail.
Section 3 - Configuration Web-based Configuration To access the configuration utility for the DAP-1620 AC1200 Wi-Fi Range Extender on your PC, first connect to the DAP-1620 wirelessly using the Wi-Fi name (SSID) and password located on your Wi-Fi Configuration Card. Then open a web browser and enter http://dlinkap.local./ in your browser’s URL field. You may also enter the IP address* of the DAP-1620. * The default IP address is 192.168.0.50.
Section 3 - Configuration Setup Wizard If this is your first time logging in to the extender and no connection has been established, the setup wizard will automatically appear. In the future, if you wish to configure your extender using the setup wizard, click the Uplink Router icon. The setup wizard is designed to guide you through a step-by-step process to configure your new DAP-1620 AC1200 Wi-Fi Range Extender to extend your wireless network and connect to the Internet.
Section 3 - Configuration Connecting Your Device via WPS After clicking the Next button from the previous step, the DAP-1620 will automatically initiate a WPS-PBC (Wireless Protected Setup - Push Button Control) search to find an uplink network to extend. If your existing wireless networking device has a physical or virtual WPS button, press or enable it within the 120 seconds allotted by the countdown timer.
Section 3 - Configuration WPS Successful If a WPS connection is successfully established, the Status/WPS LED will turn green and you will be prompted to configure your extension network settings. The default network names are as follows: • 2.4 GHz: (Your router’s SSID)-EXT • 5 GHz: (Your router’s SSID)-EXT5G After WPS completes, the password of “(Your router’s SSID)-EXT” will be the same as the router it is extending. You may independently set both the 2.4 GHz and 5 GHz network names and passwords.
Section 3 - Configuration Extend an Existing Network To set up your network manually, select Extend an Existing Network from the setup wizard menu. Click Next to continue. The DAP-1620 will scan for available wireless networks and display a list of results. You may choose one of the following options to proceed: • If the wireless network you wish to extend was detected by the scan, click on the network to highlight it, then click the Select button.
Section 3 - Configuration If the wireless network you wish to extend was detected by the scan, enter the password now. Click Next to continue on to configure your extension network settings, or click Back to return to the previous step. If you chose Manual , enter the Wireless Network Name, type of Security, and Password of the existing Wi-Fi network you wish to connect to. Click Next to continue on to configure your extension network settings, or click Back to return to the previous step.
Section 3 - Configuration If a connection is successfully established, the Status/WPS LED will turn green and you will be directed to confirm the DAP-1620’s extension network details. The default network names are as follows: • 2.4 GHz: (your router’s 2.4 GHz SSID)-EXT • 5 GHz: (your router’s 5 GHz SSID)-EXT5G The passwords will be copied over from the router to the DAP-1620’s networks.
Section 3 - Configuration Add Wireless to Your Wired Network This portion of the setup wizard will guide you through added wireless to an existing wired network. Click Add wireless to your wired network. Connect an Ethernet cable to your DAP-1620 if you have not already done so. After making the connection, you will automatically be forwarded to the next step. If you haven’t connected an Ethernet cable yet, but will do so later, click skip.
Section 3 - Configuration If a connection is successfully established, the Status/WPS LED will turn green and you will be directed to confirm the DAP-1620’s wireless network details. The default network names are as follows: • 2.4 GHz: (dlink-####) • 5 GHz: (dlink-####)-5GHz ####1234 is the default password. #### corresponds to the last 4 digits of your DAP-1620’s MAC address. You may independently set both the 2.4 GHzand 5 GHz network names and passwords.
Section 3 - Configuration Configure Administrator Password In order to secure the extender’s web configuration utility, please enter a new password. You will be prompted for this password each time you want to use the extender’s web configuration utility. Click Next to continue onward to Save Your Configuration.
Section 3 - Configuration Save Your Configuration At the end of the wizard, you will be presented with a final summary of your settings. It is recommended that you record this information for future reference. Click Finish to close the wizard. You will be asked if you wish to create a bookmark to the web configuration utility. Your changes will be saved and the extender will reboot. Devices may be connected to the new wireless extension network(s) once the extender successfully reboots.
Section 3 - Configuration Home Screen The home screen gives a summary of the current status of devices connected to the DAP-1620. A green check between the device and the uplink router indicates that there is an active connection. A red cross indicates that there is no connection present, or there is a connection error. If there’s no active uplink connection, click on the Uplink Router icon to start the setup wizard.
Section 3 - Configuration Once your Internet connection is set up, you can view the details of both the uplink network and the extended Wi-Fi network by clicking on the DAP-1620 icon.
Section 3 - Configuration Extender Settings This page lets you configure the settings for the DAP-1620’s extended wireless network. To access this page, point to the Settings drop-down menu at the top of the page, and select Extender. Click Save to save the settings and return to the home page. Existing Network Existing Select between Ethernet or Wi-Fi as you existing network Network: depending on if you wish to use the DAP-1620 as a access point or a repeater, respectively. 2.
Section 3 - Configuration 5 GHz Status: Enable or disable this 5 GHz network by toggling this slider. Wi-Fi Name This is the name of the DAP-1620’s extended network. (SSID): The DAP-1620 will rebroadcast the uplink router’s Internet connection under this SSID. You can also choose to make the SSID for the extended 5 GHz network the same as the SSID for the uplink network. Security: Select the type of wireless security you wish to use for the extended network. Choose None or WPA/WPA2 Personal.
Section 3 - Configuration Network Settings This page lets you configure the network settings for the DAP-1620. To access this page, point to the Settings drop-down menu at the top of the page, then select Network. Click Save at any time to save the changes you have made on this page. Management You can change the URL name of the device by editing the Link: text in the text box. If you change the name of the device, you will need to enter “http://xxxx.local.
Section 3 - Configuration Autoconfiguration (SLAAC/DHCPv6) IPv6 Device Management Interface My IPv6 Select Autoconfiguration (SLAAC/DHCPv6) to have the Connection is: DAP-1620 automatically receive an IPv6 address from the uplink router. Obtain IPv6 You can select to obtain IPv6 DNS server information DNS Servers automatically, or you can select to configure DNS servers Automatically: manually by clicking on the radio dial next to the option.
Section 3 - Configuration Static IPv6 IPv6 Device Management Interface My IPv6 Select Static IPv6 to manually assign an IP address to the Connection is: DAP-1620. IPv6 Address: Enter the IPv6 address that you want to assign to the extended network AP. This address should be outside of the uplink router’s DHCP address pool. Subnet Prefix Enter the length of the IPv6 subnet prefix. Length: Default Gateway: Enter the default gateway. Primary DNS Enter the primary IPv6 DNS server address.
Section 3 - Configuration Link-local Only IPv6 Device Management Interface My IPv6 Select Link-local only to only set an IPv6 address for the Connection is: local network. LAN IPv6 Link- The link-local address of the DAP-1620.
Section 3 - Configuration Management Admin This page will allow you to set a new password for the administrator account used to configure the DAP-1620. You can also enable graphical authentication (CAPTCHA) on this page. To access this page, point to the Management drop down menu at the top of the page, and select Admin. Click Save at any time to save the changes you have made on this page. Admin Enter the Admin password.
Section 3 - Configuration System This page allows you to save or restore your system configuration, reset, or reboot the DAP-1620. To access this page, point to the Management drop down menu at the top of the page, and select System. Click Save at any time to save the changes you have made on this page. Save Settings Save the system settings onto a file to the local hard drive.
Section 3 - Configuration Upgrade Firmware and language upgrades may be provided for the DAP-1620 in future. You can check and upgrade your firmware and language pack on this page. To access this page, point to the Management drop down menu at the top of the page, and select Upgrade. Click Save at any time to save the changes you have made on this page.
Section 3 - Configuration Statistics This page displays details about your wireless and network connections. To access this page, point to the Management drop- down menu at the top of the page, and select Statistics. Click Clear to reset the statistics. Wi-Fi Click on the Wi-Fi tab to display the statistics for the connection between the DAP-1620 and the uplink router. The Blue line indicates the upload speeds and the red line indicates the download speeds.
Section 4 - Connecting a Wireless Client Connecting Wireless Clients to the Extended Network WPS Button Once an uplink network has been established, you may use the DAP-1620’s WPS function to add additional wireless clients to your extended network. Most wireless devices such as wireless routers, media players, printers, and cameras will have a WPS button (or a software utility with WPS) that you can press to connect to the DAP-1620.
Section 4 - Connecting a Wireless Client Windows® 8 WPA/WPA2 It is recommended to enable wireless security (WPA/WPA2) on your wireless router or extender before configuring your wireless adapter. If you are joining an existing network, you will need to know the security key (Wi-Fi password) being used. To join an existing network, locate the wireless network icon in the taskbar, next to the time display.
Section 4 - Connecting a Wireless Client You will then be prompted to enter the network security key (Wi-Fi password) for the wireless network. Enter the password into the box and click Next. If you wish to use Wi-Fi Protected Setup (WPS) to connect to the router, you can also press the WPS button on your router at this point to enable the WPS function.
Section 4 - Connecting a Wireless Client Windows® 7 WPA/WPA2 It is recommended to enable wireless security (WPA/WPA2) on your wireless router or extender before configuring your wireless adapter. If you are joining an existing network, you will need to know the security key or passphrase being used. 1. Click on the wireless icon in your system tray (lower-right corner). Wireless Icon 2. The utility will display any available wireless networks in your area.
Section 4 - Connecting a Wireless Client 3. Highlight the wireless network (SSID) you would like to connect to and click the Connect button. If you get a good signal but cannot access the Internet, check your TCP/IP settings for your wireless adapter. Refer to the Wireless Basics section in this manual for more information. 4. The following window appears while your computer tries to connect to the router.
Section 4 - Connecting a Wireless Client 5. Enter the same security key or passphrase that is on your router and click Connect. It may take 20-30 seconds to connect to the wireless network. If the connection fails, please verify that the security settings are correct. The key or passphrase must be exactly the same as on the wireless router.
Section 4 - Connecting a Wireless Client Windows Vista® Windows Vista® users may use the built-in wireless utility. If you are using another company’s utility or Windows® 2000, please refer to the user manual of your wireless adapter for help with connecting to a wireless network. Most utilities will have a “site survey” option similar to the Windows Vista® utility as seen below. If you receive the “Wireless Networks Are Available” bubble, click on the center of the bubble to access the utility.
Section 4 - Connecting a Wireless Client WPA/WPA2 It is recommended to enable wireless security (WPA/WPA2) on your wireless router or extender before configuring your wireless adapter. If you are joining an existing network, you will need to know the security key or passphrase being used. 1. Open the Windows Vista® Wireless Utility by right-clicking on the wireless computer icon in your system tray (lower right corner of screen). Select Connect to a network. 2.
Section 4 - Connecting a Wireless Client 3. Enter the same security key or passphrase that is on your router and click Connect. It may take 20-30 seconds to connect to the wireless network. If the connection fails, please verify that the security settings are correct. The key or passphrase must be exactly the same as on the wireless router.
Section 4 - Connecting a Wireless Client Windows® XP Windows® XP users may use the built-in wireless utility (Zero Configuration Utility). The following instructions are for Service Pack 2 users. If you are using another company’s utility, please refer to the user manual of your wireless adapter for help with connecting to a wireless network. Most utilities will have a “site survey” option similar to the Windows® XP utility as seen below.
Section 4 - Connecting a Wireless Client WPA/WPA2 It is recommended to enable WPA on your wireless router or extender before configuring your wireless adapter. If you are joining an existing network, you will need to know the WPA key being used. 1. Open the Windows® XP Wireless Utility by right-clicking on the wireless computer icon in your system tray (lower-right corner of screen). Select View Available Wireless Networks. 2.
Section 4 - Connecting a Wireless Client 3. The Wireless Network Connection box will appear. Enter the WPAPSK passphrase and click Connect. It may take 20-30 seconds to connect to the wireless network. If the connection fails, please verify that the WPA-PSK settings are correct. The WPA-PSK passphrase must be exactly the same as on the wireless router.
Section 5 - Troubleshooting Troubleshooting This chapter provides solutions to problems that can occur during the installation and operation of the DAP-1620. Read the following descriptions if you are having problems. The examples below are illustrated in Windows® XP. If you have a different operating system, the screenshots on your computer will look similar to the following examples. 1.
Section 5 - Troubleshooting • Configure your Internet settings: • Go to Start > Settings > Control Panel. Double-click the Internet Options Icon. From the Security tab, click the button to restore the settings to their defaults. • Click the Connection tab and set the dial-up option to Never Dial a Connection. Click the LAN Settings button. Make sure nothing is checked. Click OK. • Go to the Advanced tab and click the button to restore these settings to their defaults. Click OK three times.
Appendix A - Wireless Basics Wireless Basics D-Link wireless products are based on industry standards to provide easy-to-use and compatible high-speed wireless connectivity within your home, business or public access wireless networks. Strictly adhering to the IEEE standard, the D-Link wireless family of products will allow you to securely and conveniently access your network. You will be able to enjoy the freedom that wireless networking delivers.
Appendix A - Wireless Basics Tips Here are a few things to keep in mind when you are installing your AC1200 Wi-Fi Range Extender. Centralize the extender’s location For best performance, make sure you place the extender in a centralized location within your desired usage area. Try to place the extender so that there are minimal obstructions between it and the uplink router. If possible, use an elevated power outlet, so the signal can be dispersed more easily.
Appendix B - Technical Specifications Technical Specifications Standards • IEEE 802.11ac • IEEE 802.11a • IEEE 802.11n • IEEE 802.11g • IEEE 802.11b Wireless Frequency Range 1 • 2.4 GHz to 2.4835 GHz • 5.18 MHz to 5.85 MHz Device Interfaces • 802.
Appendix C - GPL Code Statement GPL Code Statement This D-Link product includes software code developed by third parties, including software code subject to the GNU General Public License (“GPL”) or GNU Lesser General Public License (“LGPL”). As applicable, the terms of the GPL and LGPL, and information on obtaining access to the GPL code and LGPL code used in this product, are available to you at: http://tsd.dlink.com.tw/GPL.
Appendix C - GPL Code Statement Preamble The GNU General Public License is a free, copyleft license for software and other kinds of works. The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users.
Appendix C - GPL Code Statement Finally, every program is threatened constantly by software patents. States should not allow patents to restrict development and use of software on general-purpose computers, but in those that do, we wish to avoid the special danger that patents applied to a free program could make it effectively proprietary. To prevent this, the GPL assures that patents cannot be used to render the program non-free.
Appendix C - GPL Code Statement 1. Source Code. The “source code” for a work means the preferred form of the work for making modifications to it. “Object code” means any non-source form of a work. A “Standard Interface” means an interface that either is an official standard defined by a recognized standards body, or, in the case of interfaces specified for a particular programming language, one that is widely used among developers working in that language.
Appendix C - GPL Code Statement 2. Basic Permissions. All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work.
Appendix C - GPL Code Statement 4. Conveying Verbatim Copies.
Appendix C - GPL Code Statement 6. Conveying Non-Source Forms. You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways: a) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily used for software interchange.
Appendix C - GPL Code Statement A “User Product” is either (1) a “consumer product”, which means any tangible personal property which is normally used for personal, family, or household purposes, or (2) anything designed or sold for incorporation into a dwelling. In determining whether a product is a consumer product, doubtful cases shall be resolved in favor of coverage.
Appendix C - GPL Code Statement 7. Additional Terms. “Additional permissions” are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law.
Appendix C - GPL Code Statement All other non-permissive additional terms are considered “further restrictions” within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term.
Appendix C - GPL Code Statement from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10. 9. Acceptance Not Required for Having Copies. You are not required to accept this License in order to receive or run a copy of the Program.
Appendix C - GPL Code Statement 11. Patents. A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor’s “contributor version”.
Appendix C - GPL Code Statement A patent license is “discriminatory” if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License.
Appendix C - GPL Code Statement 14. Revised Versions of this License. The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number.
Appendix C - GPL Code Statement 17. Interpretation of Sections 15 and 16. If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
Appendix D - Safety Statements Safety Statements Federal Communication Commission Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
Appendix D - Safety Statements Industry Canada statement: This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the following two conditions: (1) This device may not cause interference; and (2) This device must accept any interference, including interference that may cause undesired operation of the device. Cet appareil est conforme aux CNR exemptes de licence d’Industrie Canada.
Appendix D - Safety Statements 1&& 警語： 電磁波曝露量 MPE 標準值 (MPE) 1mW/cm2，送測產品實值為 0.085mW/cm2 經型式認證合格之低功率射頻電機，非經許可，公司，商號或使用者均不得擅自變更頻率、加大功率或變更原設計之特性及功能。 低功率射頻電機之使用不得影響飛航安全及干擾合法通信；經發現有干擾現象時，應立即停用，並改善至無干擾時方得繼續使用。 前項合法通信，指依電信法規定作業之無線電通信。 低功率射頻電機須忍受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。 在 5.25-5.
