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<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>[openThread] Why device change radio channel randomly when one device is only on NETWORK?</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/103543/openthread-why-device-change-radio-channel-randomly-when-one-device-is-only-on-network</link><description>Dear 
 
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 nRF52840DK_QFAA 
 nRF Connect SDK 2.4.0 / 2.4.1 
 oprnThread 
 FTD device(openThread FTD) 
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 I found strange symptom, now. 
 One Network is running with</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Thu, 07 Sep 2023 22:59:22 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/103543/openthread-why-device-change-radio-channel-randomly-when-one-device-is-only-on-network" /><item><title>RE: [openThread] Why device change radio channel randomly when one device is only on NETWORK?</title><link>https://devzone.nordicsemi.com/thread/445023?ContentTypeID=1</link><pubDate>Thu, 07 Sep 2023 22:59:22 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:419d5f3d-ea4d-4251-bb69-15bf0323d1fa</guid><dc:creator>keunsik</dc:creator><description>&lt;p&gt;Finally, i do not find API to change ChannelMask when i change to Channel.&lt;/p&gt;
&lt;p&gt;How do i&amp;nbsp; change ChannelMask when i change Channel everytime?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [openThread] Why device change radio channel randomly when one device is only on NETWORK?</title><link>https://devzone.nordicsemi.com/thread/444885?ContentTypeID=1</link><pubDate>Thu, 07 Sep 2023 10:57:48 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:5c17f1dd-3f97-4932-8988-b10d3a1252d4</guid><dc:creator>Marte Myrvold</dc:creator><description>&lt;p&gt;Hi,&lt;/p&gt;
&lt;p&gt;Have you verified that none of the devices change channel?&lt;/p&gt;
[quote user=""]Now, i set&amp;nbsp;&amp;nbsp; &lt;span style="color:rgba(0, 0, 0, 1);"&gt;0x7FFF800 (channel 11-26)&lt;/span&gt;[/quote]
&lt;p&gt;With this, you set that the devices can use any channel from 11 to 26, which means that they can switch to a different channel. From what you write it seems like device B searches for networks on different channels, finds the network of device A, and then joins that network as a child under device A.&lt;/p&gt;
&lt;p&gt;PAN ID is used as an identification for different networks, so if you want to have two different networks, then the networks should have different PAN IDs.&lt;/p&gt;
&lt;p&gt;Best regards,&lt;br /&gt;Marte&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>