https://devzone.nordicsemi.com/f/nordic-q-a/27302/nrf52-dk-external-antenna---tuningHi, We have a prototype application which requires an NRF52 based peripheral to be inside a metal cabinet and to connect via BLE to a central while maximising the link range as far as possible. In production the intention is to have an externalen-USTelligent Community 13Thu, 23 Nov 2017 11:44:38 GMThttps://devzone.nordicsemi.com/thread/107859?ContentTypeID=1Thu, 23 Nov 2017 11:44:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6f3122e2-abf0-43c0-94c6-42804788b6a6ketil<p>Great! Happy to know you got it working.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/107858?ContentTypeID=1Thu, 23 Nov 2017 10:28:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:aa0c726e-710b-4ec2-95b1-750a6d4bf4abjumpingfool<p>Thanks for your help.</p> <p>Just in case anyone else experiences this problem, after trying a couple of alternative antennas we realised our error - we were trying to mate an SMA and reverse SMA plug/socket so the connection between the fly lead and the antenna was not mating correctly. Not being familiar with the SMA standard this was not something we were aware we needed to check and the connectors initially appeared to mate fine.</p> <p>Following the addition of an adapter to covert all connections to standard SMA everything is working as expected!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/107857?ContentTypeID=1Wed, 22 Nov 2017 09:03:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2793efa0-7924-452c-a247-c168ea45afaeketil<p>The antenna and cable you linked to should work and your thinking is correct. Our suggestion is to try a different antenna and/or cable to rule out fabrication issues.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/107856?ContentTypeID=1Tue, 21 Nov 2017 09:08:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:101bab25-f577-4573-84a7-11b73eff4aa8jumpingfool<p>Thanks for your help, this is the jumper cable from the NRF52:</p> <p><a href="https://www.digikey.com.au/product-detail/en/murata-electronics-north-america/MXHS83QE3000/490-4982-ND/1775923">www.digikey.com.au/.../1775923</a></p> <p>This is the antenna:</p> <p><a href="https://www.jaycar.com.au/wireless-networking-antenna-5db/p/AR3273">www.jaycar.com.au/.../AR3273</a></p> <p>If a different antenna would give a better result please let me know which one we should try!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/107854?ContentTypeID=1Thu, 16 Nov 2017 19:13:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f8ad931d-7c78-41da-b0bb-62775b05e22cjumpingfool<p>Thanks for your help, this is the jumper cable from the NRF52:</p> <p><a href="https://www.digikey.com.au/product-detail/en/murata-electronics-north-america/MXHS83QE3000/490-4982-ND/1775923">www.digikey.com.au/.../1775923</a></p> <p>This is the antenna:</p> <p><a href="https://www.jaycar.com.au/wireless-networking-antenna-5db/p/AR3273">www.jaycar.com.au/.../AR3273</a></p> <p>If a different antenna would give a better result please let me know which one we should try!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/107855?ContentTypeID=1Thu, 16 Nov 2017 14:35:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0bb6b49f-ed98-473e-8b8e-dc478bb2d327ketil<p>Hi,</p> <p>Could you provide some more information on the antenna and cable that you are using? Preferably links to data sheets.</p><div style="clear:both;"></div>