[arm-allstar] AllStar Node progress

Joe Puma kd2nfc at gmail.com
Thu May 17 16:56:26 EST 2018


After spending a week building my node I’m happy to have it just about complete. It setup with with a good amount of bells and whistles, it’s simplex but I can connect to the node with a few of my sip devices and iax works nicely too. I have some autopatches setup for dialout with my sip providers.  

The most trickiest part I had was getting rid a high pitch ring in the audio when the radio transmitted due to the RF floating around. I’m using a Baofeng 888.  With the radio not being properly shielded everything is hot with RF and if the antenna is nearby forget it. Btw I left the power alone I’m just in low power.  I grounded everything I could and shoving everything in a metal box, it helped with keeping the antenna outside but I still had that high-pitched ringing sound in the audio.  I finally had some luck wrapping the entire radio with this IR blocker I had laying around. Man you can wrap your cell phone in this stuff and after a few seconds it loses all signal lol. It didn’t work wrapping the sound card or isolating it from the radio or covering the raspberry pi  and power supply.  It worked best buy wrapping the radio in it isolating whatever RF is coming off of the radio and bouncing around inside the metal box.  The antenna outside is not penetrating the case at all and finally I don’t hear the ring at all anymore.   Boy that was annoying not sure if anyone else had RF in their audio problems but just wanted to mention what work for me.  Happy to have a QSO with anyone who wants to connect to my node. 46596. This thing is ready to float around In orbit 🛰☺️

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Joe
KD2NFC 


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