GlennB Posted July 26, 2018 Share Posted July 26, 2018 I often have my Bluetooth headset (JBL Everest 100s) on under my ear muffs while I'm working in the shop. While forging, there is no issue. When I am grinding (2 x 36 or angle grinder), I experience stuttering until the machine is powered off. Has anyone experienced this or found a solution? Quote Link to comment Share on other sites More sharing options...
Glenn Posted July 26, 2018 Share Posted July 26, 2018 Loose brushes or electrical contacts in the grinder? Read as arcing and sparking. Quote Link to comment Share on other sites More sharing options...
GlennB Posted July 26, 2018 Author Share Posted July 26, 2018 The angle grinder in brand new. The 2 x 36 is also new (1 yr but has seen only limited use until now). Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted July 26, 2018 Share Posted July 26, 2018 Brushed motors tend to create radio frequency interference no matter what age they are! Quote Link to comment Share on other sites More sharing options...
GlennB Posted July 26, 2018 Author Share Posted July 26, 2018 So, if working with power tools, there will always be interference if using a Bluetooth/wireless headset. I can always go back to the wired headset albeit a pain in the neck. Thanks. Quote Link to comment Share on other sites More sharing options...
PaperPatched Posted July 26, 2018 Share Posted July 26, 2018 The first radio transmitters were arc based. And I think that I read that they are now banned due to the wide splatter of frequencies they output (there was no one else to share the spectrum of radio frequencies with back in those pioneering days). Every time you pull the switch you are creating a local radio transmitter. I don't think there is any practical way to prevent the Bluetooth interference. Alan -- K1ALN Quote Link to comment Share on other sites More sharing options...
GlennB Posted July 26, 2018 Author Share Posted July 26, 2018 Would it make a difference, PaperPatched, if the Bluetooth frequencies were in a different range? I know that would have to be an industry wide agreement to deal with said issue. Also, I reckon, this kind of problem is so limited as to not pose a concern for any of the manufacturers. Thanks! Quote Link to comment Share on other sites More sharing options...
JHCC Posted July 26, 2018 Share Posted July 26, 2018 This is what happens when manufacturers work the Bluetooth at too high a temperature and don't normalize properly before tempering. The larger grain structure picks up those random vibrations from the motors and turns it into static. Write to the manufacturer and tell them that they need to practice proper edge packing on their products in future. Quote Link to comment Share on other sites More sharing options...
GlennB Posted July 26, 2018 Author Share Posted July 26, 2018 Not a bad thought. Maybe if I do a subcritical quench followed by a spheroidial cycle the Bluetooth won't suffer micro fissures. Thanks! Quote Link to comment Share on other sites More sharing options...
PaperPatched Posted July 27, 2018 Share Posted July 27, 2018 Glen, I think you are right about power tool interference to Bluetooth being too small a problem for manufacturers to worry about. As it is the level of background "noise" increases all the time. The FCC is charged with dealing with radio interference, but is so strapped with bigger problems that this problem will probably never see any attention. The switching power supplies in LED light bulbs and other consumer electronics are posing quite a problem for ham radio (Amateur Radio). Manufacturers seem to pay little attention to complying with FCC regulations, and the FCC is so under funded that they cannot deal with it all. I'm no expert at radio interference so don't know if there is any practical way to deal with it in regards to Bluetooth. The size of Bluetooth devices makes conventional avenues such as shielded cables and wrapping cables through ferrites impossible (at least at my skill level). Alan Quote Link to comment Share on other sites More sharing options...
Koek Posted August 23, 2018 Share Posted August 23, 2018 Cover the receiver in your headset in tinfoil (I used aluminum tape) and leave an opening pointing towards your player. I keep my phone in my pocket so it was straight down in my case. Doesn’t solve everything but helps alot. be prepared however because the amount of tinfoil headset jokes in your future will be numerous. Quote Link to comment Share on other sites More sharing options...
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