Wow! Great info. This material is being asked about, and talked about more and more as technology and clothing combine. Next, heated jackets.

It had not occurred to me to take off my bluetooth connected GPS watch. I seem to remember old transceivers being mounted on the center of your chest. Now the tend to be lower left abdomen. 20cm away from a pacemaker. Thanks for the information

Great information, if you have a link to more detail about how the interference was tested I'd be curious. I did my own backyard tests a couple of years ago using a Mammut Barryvox S and a Mammut Element beacon. As expected, I saw major interference in search mode from an iPhone, seemingly about equal in magnitude between regular and airplane mode. Interestingly, I didn't see any difference in search mode when I held a transmitting radio right next to the beacon. I used both a BCA transmitting at 2W and a Baofeng at 5W. I had similar results when the electronics were next to the sending beacon. I found that quickly moving my phone to my back pocket created enough distance and the increased shielding from my body probably helped too. A friend and I have hypothesized that a clothing manufacturer could incorporate a Faraday pouch pocket into a touring pant that could eliminate any phone interference.

Important subject. Thanks for discussing it even the recent avalanche fatality in Weber canyon had issues with ghost signals from a radio. Everyone has a phone with them nowadays and many of us have FSR radios for communication as well. Some have additional go pro type devices that may use Bluetooth wifi etc as well. So many bc skiers have 2-4 electronic devices on them most have at least 2. We’ve also talked about not using electric gloves and socks etc. I think we should discuss the phone issue further as almost all will have one with them most often or if not they will have a Garmin mini Sat communication device. A great solution and easy one is everyone should have their phone in a faraday bag to shield the screen as the article mentions but also with the phone on airplane mode to help preserve the battery life in case of emergency. Great detailed article on faraday bag use for off piste backcountry skiing use from Alpine guides. Also with a suggested tested faraday bag recommendation as well. II would suggest that Mark staples could update this article to also suggest the use of faraday bags as an additional solution to interference as well, understanding that the phone in the faraday bag still needs to be kept at least 20 cm or 8 inches away from your beacon transceiver. If you are buried you will certainly be happy that the phone is in a faraday bag not interfering at all with your beacon so the searchers can find you as quickly as possible. https://www.alpine-guides.com/faraday-pouches-a-solution-for-electronic-shielding-whilst-off-piste-skiing/ Also another Faraday bag option to check out here locally in SLC area. Or online. I have no connection to any of these. https://wndr-alpine.com/products/slnt-x-wndr-faraday-phone-sleeve

A side note on the alpine guides article I just posted to you on faraday bags or pouches is that they did some testing on them and have some recommendations based on the testing that they did. I haven’t investigated the other link I posted about the local company’s faraday but you could follow up on that to see if it’s double shielded or has 2 layers of shielding as the alpine guides article testing suggested. Their website says it has multi shielding so it appears to be what we are looking for and here locally as well. Just $29 aprox plus shipping etc. Or we could possibly just pick them up Michael C# 801-560-0149 Or my email [email protected] https://wndr-alpine.com/products/slnt-x-wndr-faraday-phone-sleeve

By the way great article Mark! Thanks so much for putting it together for education and opening up the conversation. Really appreciate what you guys do. ✅

Tests for the SLNT WNDR Faraday bag mentioned from my other email. https://slnt.com/blogs/news/do-faraday-bags-work-these-4-tests-reveal-the-truth