/members-area/personalblogs/b/gough-lui-s-blog/posts/idt-sdawir03-roadtest-in-depth-ch6-radio-emission-testingIn this blog, I will look at the characteristics of the radio emissions from the IDT ZWIR4512 6LoWPAN modules. For testing, the module region has been set to US with 10 channels as this is seemed most appropriate for Australia where ISM operation in en-USTelligent Community 12https://community.element14.com/members-area/personalblogs/b/gough-lui-s-blog/posts/idt-sdawir03-roadtest-in-depth-ch6-radio-emission-testingWed, 10 Jul 2019 04:17:17 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:70ba6fd3-045f-448b-9d5d-7169db441b83aspork421<p>I just did some basic testing with the modules with an H-field probe and Rigol SA. The 868.3 and the 906 mHz frequencies do seem to work properly; but only after a reboot of the hub. The cube &#39;hangs on&#39; to the last channel but then starts looking around on both frequencies to sync up again. I didn&#39;t mess around with other frequencies like you were talking about above (I only just re-read your post after I had been playing with this for a while). So none of that fixes the problem you have where none of these frequencies are allowed. </p><p>&nbsp;</p><p><span>[View:/resized-image/__size/620x372/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-70ba6fd3-045f-448b-9d5d-7169db441b83/0576.contentimage_5F00_190899.bmp:620:372]</span><span>[View:/resized-image/__size/620x372/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-70ba6fd3-045f-448b-9d5d-7169db441b83/0552.contentimage_5F00_190900.bmp:620:372]</span></p><img src="https://community.element14.com/aggbug?PostID=7109&AppID=316&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/members-area/personalblogs/b/gough-lui-s-blog/posts/idt-sdawir03-roadtest-in-depth-ch6-radio-emission-testingMon, 24 Jun 2019 04:05:40 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:70ba6fd3-045f-448b-9d5d-7169db441b83aspork421<p>Good read. I noticed that the particular version of the ZWIR4512 on the cube has a Hirose U.FL (?) connector, so presumably an external antenna could be added. So we don&#39;t really know if the problem is transmission on one side, or receiving issues on the other. It is a shame that &lt;5M is the best we could expect from the modules in their current form. Good work on finding ways to configure the module via command line - another undocumented feature....</p><img src="https://community.element14.com/aggbug?PostID=7109&AppID=316&AppType=Weblog&ContentType=0" width="1" height="1">