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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>NRF Snifffer 1.0.1 problem</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/24228/nrf-snifffer-1-0-1-problem</link><description>Hi, 
 I am using ble-sniffer_nRF51822_1.0.1_1111_Sniffer.hex as the sniffer and I am trying to see all ble beacons.
Because I have many beacons about (100 in one second) I decided to set the ble becons to transmit on one channel.
30 PCs transmit on</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Mon, 14 Aug 2017 07:47:28 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/24228/nrf-snifffer-1-0-1-problem" /><item><title>RE: NRF Snifffer 1.0.1 problem</title><link>https://devzone.nordicsemi.com/thread/95399?ContentTypeID=1</link><pubDate>Mon, 14 Aug 2017 07:47:28 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:e13e464b-415a-45c4-8dc6-b24873b2195c</guid><dc:creator>Hung Bui</dc:creator><description>&lt;p&gt;Yes, you can change the hopping pattern to listen on only one channel. Press &amp;quot;h&amp;quot; in the sniffer console to select the channel you want to follow.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF Snifffer 1.0.1 problem</title><link>https://devzone.nordicsemi.com/thread/95398?ContentTypeID=1</link><pubDate>Sat, 12 Aug 2017 04:44:17 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:6d09514b-1471-48b4-93bd-16fae02d02cc</guid><dc:creator>MAX</dc:creator><description>&lt;p&gt;Hi Hung,&lt;/p&gt;
&lt;p&gt;Thank you for your reply.
You are right, But my problem is that the sniffer will be paused on the empty channel.
When I am using all beacons on channel 37, the sniffer will not see any thing.
I think the problem is that the sniffer will stay in channel 38 because it is empty and no beacons transmit on this channel. (Is this the firmware bug?)&lt;/p&gt;
&lt;p&gt;How can I tell the sniffer to listen on only one channel?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF Snifffer 1.0.1 problem</title><link>https://devzone.nordicsemi.com/thread/95397?ContentTypeID=1</link><pubDate>Fri, 11 Aug 2017 09:12:27 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:dacd810c-1e61-4d55-bcc3-deae8a19ba9f</guid><dc:creator>Hung Bui</dc:creator><description>&lt;p&gt;Hi Max,&lt;/p&gt;
&lt;p&gt;This is because the sniffer can&amp;#39;t listen to all 3 channels at the same time (simply because it has only one radio). So it must use a hopping pattern. By default the hopping is 37 38 39. You can change that to set to only one channel, 37 for example.&lt;/p&gt;
&lt;p&gt;Note that even though your beacons transmit on different channel, if they transmit at the same time and if they are close enough (signal strength strong enough) to the receiver they will still cause interference.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>