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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>Thingy: 91 Development board RF frequency band issue</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/124486/thingy-91-development-board-rf-frequency-band-issue</link><description>Due to the size limitations of the equipment, it is difficult to operate the low-frequency range of 700Mhz to 960Mhz for cellular antennas, and it is necessary to switch them through a harmonic switch. 
 There are two communication methods between nrf9151</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Mon, 22 Sep 2025 10:06:50 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/124486/thingy-91-development-board-rf-frequency-band-issue" /><item><title>RE: Thingy: 91 Development board RF frequency band issue</title><link>https://devzone.nordicsemi.com/thread/549404?ContentTypeID=1</link><pubDate>Mon, 22 Sep 2025 10:06:50 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:71b9f13a-1dbc-4c62-963a-5582ea3d54fb</guid><dc:creator>JONATHAN LL</dc:creator><description>&lt;p&gt;Hi,&amp;nbsp;&lt;br /&gt;&lt;br /&gt;Here is an update,&amp;nbsp;&lt;br /&gt;&lt;img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1758535438657v1.png" alt=" " /&gt;&amp;nbsp;&lt;br /&gt;&lt;br /&gt;You can find the commands used here under the board files:&amp;nbsp;&lt;a href="https://github.com/nrfconnect/sdk-nrf/blob/de22712c117fa866bdf697697e97230ce51bdd0d/boards/nordic/thingy91x/Kconfig.defconfig.nrf9151#L83"&gt;https://github.com/nrfconnect/sdk-nrf/blob/de22712c117fa866bdf697697e97230ce51bdd0d/boards/nordic/thingy91x/Kconfig.defconfig.nrf9151#L83&lt;/a&gt;&amp;nbsp;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;Regards,&lt;br /&gt;Jonathan&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Thingy: 91 Development board RF frequency band issue</title><link>https://devzone.nordicsemi.com/thread/549347?ContentTypeID=1</link><pubDate>Fri, 19 Sep 2025 17:13:47 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:49561e4f-65cd-4847-8e69-7de0e615c9fd</guid><dc:creator>Zeliang Jiang</dc:creator><description>&lt;p&gt;Hi Jonathan，&lt;/p&gt;
&lt;p&gt;Yes, we need you to provide the specific frequency bands corresponding to each port of RF1/RF2/RF3/RF4. These two links do not show them.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Thingy: 91 Development board RF frequency band issue</title><link>https://devzone.nordicsemi.com/thread/549315?ContentTypeID=1</link><pubDate>Fri, 19 Sep 2025 12:39:12 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:a68d1ee2-48bb-4af3-b14b-fb61e0037489</guid><dc:creator>JONATHAN LL</dc:creator><description>[quote user=""]Now, we need to know what frequency bands QM13345 RF1/RF2/RF3/RF4 correspond to respectively?[/quote]
&lt;p&gt;Are you asking what frequencies are used for&amp;nbsp;&lt;span&gt;RF1/RF2/RF3/RF4 on the Thingy91 design?&lt;br /&gt;&lt;br /&gt;The QM13345 is controlled from the nRF9151 MIPI RFFE interface. The MIPI RFFE interface is configured with AT commands, &amp;nbsp;see &lt;a title="https://docs.nordicsemi.com/bundle/ps_nrf9161/page/ip/radio_lte/doc/magpio_if.html" href="https://docs.nordicsemi.com/bundle/ps_nrf9161/page/ip/radio_lte/doc/magpio_if.html" rel="noopener noreferrer" target="_blank"&gt;https://docs.nordicsemi.com/bundle/ps_nrf9161/page/ip/radio_lte/doc/magpio_if.html&lt;/a&gt; and&amp;nbsp;&lt;a title="https://docs.nordicsemi.com/bundle/ref_at_commands_nrf91x1/page/ref/at_commands/sip_pin_configuration/xmipirffedev.html" href="https://docs.nordicsemi.com/bundle/ref_at_commands_nrf91x1/page/REF/at_commands/sip_pin_configuration/xmipirffedev.html" rel="noopener noreferrer" target="_blank"&gt;https://docs.nordicsemi.com/bundle/ref_at_commands_nrf91x1/page/REF/at_commands/sip_pin_configuration/xmipirffedev.html&lt;/a&gt;.&amp;nbsp;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;Regards,&lt;br /&gt;Jonathan&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>