Bustin’ Makes Me Feel Good: A Low-Cost Cell-Phone Buster for the 850 MHz Band

T. Robishaw, Stephen T. Harrison, D. D. Del Rizzo, R. Messing, Benoit Robert
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Abstract

In 1957 the site for the Dominion Radio Astrophysical Observatory was chosen for its minimal radio frequency interference (RFI) from nearby human activities. The efficacy of the site has since been compromised by having a full staff of 40+ engineers, technologists, and scientists located directly adjacent to the telescopes. The site is visited daily by temporary workers, the general public, couriers, and contractors. Guided tours are offered 10AM–5PM every weekend from April through October, significantly increasing the number of visitors. The encroachment of humans on site brings RFI that is carried on their persons, such as cell phones, tablets, smart watches, and cameras. We built a device to detect cellular uplink activity as a means to demonstrating an affordable off-the-shelf solution for finding bad actors on site who have not powered off their cellular devices. We describe the cell-phone buster device, show the results from a brief survey of on-site cellular activity, and discuss plans to expand the capabilities to detect Wi-Fi, Bluetooth, and other RF emissions from personal electronic devices on site.
巴斯汀让我感觉很好:850兆赫频段的低成本手机巴斯汀
1957年,多明尼安射电天体物理观测站的选址是因为附近人类活动的无线电频率干扰(RFI)最小。由于有40多名工程师、技术人员和科学家直接靠近望远镜,该地点的效率受到了损害。工地每天都有临时工、公众、快递员和承包商来参观。从4月到10月,每个周末上午10点到下午5点都有导游,这大大增加了游客的数量。人类在现场的入侵带来了随身携带的RFI,例如手机,平板电脑,智能手表和相机。我们建立了一个设备来检测蜂窝上行活动,作为一种手段,展示了一种经济实惠的现成解决方案,可以在现场发现没有关闭蜂窝设备的不良行为者。我们描述了手机破坏装置,展示了对现场蜂窝活动的简要调查结果,并讨论了扩展检测现场个人电子设备的Wi-Fi、蓝牙和其他射频发射的能力的计划。
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