https://devzone.nordicsemi.com/f/nordic-q-a/6805/gazell-availabel-channelsWhat are the allowed channel numbers for gazell? In the gazell user manual it states, a possible 80 channels. While the nrf_gzll_set_channel_table () API reference says channels can be &quot;0 &lt;= channel &lt;= 125, where the actual centre frequency is (2400en-USTelligent Community 13Mon, 04 May 2015 14:15:19 GMThttps://devzone.nordicsemi.com/thread/23963?ContentTypeID=1Mon, 04 May 2015 14:15:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9931ec81-5864-42a3-98f8-71e1311c137fovrebekk<p>Hi</p> <p>If I am not mistaken the ISM band covers the range from 2400-2483.5MHz.</p> <p>Technically that means channels 0-83 are safe to use, but it is good practice not to use the lower and upper channels as you could get outside the band when you factor in the bandwidth of the signal (in particular this could be an issue when using the 2Mbps mode).</p> <p>To be 100% sure that you are inside the band regardless of the bitrate I would then recommend sticking to channels 2-81.</p> <p>Regards Torbjørn</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/23962?ContentTypeID=1Thu, 30 Apr 2015 22:17:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bd89fbbf-96f5-42c0-8b79-343edc47faaaRick.Soza<p>From support,</p> <p>&quot;Even though our radio is capable of setting those channels, you should not use the top 25 channels as this would go into the 2.5 GHz range. Also, it is not recommended that you use channel &#39;0&#39; and channel &#39;99&#39;, just because you are at either edge of the 2.4 GHz spectrum and any clock jitter will put you outside of the 2.4 GHz range.&quot;</p><div style="clear:both;"></div>