4 ms·
These are absolutely game-changing while driving, makes spotting cop cars a breeze.
by bbbbb5 4y ago
These are absolutely game-changing while driving, makes spotting cop cars a breeze.
- ReaLNero 4y agoWow, it lets you see behind trees and street corners? The device is practically paying for itself at that point!
- bbbbb5 4y agoNo, unfortunately not. For that I just use an USRP to alert on nearby TETRA handsets, not super reliable though. There are UK companies with a similar commercial products https://www.targetblueye.co.uk https://www.targetblueye.co.uk https://www.pythondetectors.com https://www.pythondetectors.com
- aliqot 4y agoWoah, didn't know these existed. Thanks!
- bbbbb5 4y agoThis has been a really fun project to work on during the weekends, definitely recommend it. Next step for me will be to get automatic direction finding working, hopefully will finish that during the next year.
- aftbit 4y agoAre you using multiple phase matched receivers? I've wanted to try that on P.25 radios here in the US but never gotten the hardware, time, and motivation together. :)
- bbbbb5 4y agoI'm way out of my depth with the ADF. A friend gave me an old rotating marine ADF receiver I've been playing with, but as it turns out I'm not gonna get that spinning fast enough for my purposes. I've got the mathematics background to eventually get this working, but not the radio background to do so very quickly.
- ornornor 4y agoAre you speeding while looking out for cops through binoculars?
- codethief 4y agoReminds me of the war stories Arne Toman tells about his Cannonball Runs[0] from NYC to LA. Apparently, the front-seat passenger ("spotter") is constantly (for hours!) on the lookout for cops using binoculars. Toman is this guy: > In May 2020, Arne Toman, Doug Tabbutt, and spotter Dunadel Daryoush set the new cannonball record of 25 hours and 39 minutes in a modified 2016 Audi S6 disguised to look like a Ford Taurus police interceptor. Police-evasion modifications included brake light kill-switches, radar detectors, laser diffusers, CB-radio, and a roof-mounted thermal camera. Performance modifications included a trunk-mounted 67-gallon auxiliary fuel cell sourced from the car used in Toman and Tabbutt's 2019 cannonball run, modified turbochargers, an upgraded heat-exchanger, and custom ECU tuning that allowed for engine-mapping to be changed on-demand to suit either 91 or 93-octane fuel; allowing the car to generate an estimated 600 horsepower. The run achieved an overall average speed of 110 miles per hour (180 km/h) for the entire run, with average speeds upwards of 125 miles per hour (201 km/h) across some states, and which at no time exceeded 175 miles per hour (282 km/h). [0]: https://en.wikipedia.org/wiki/Cannonball_Run_challenge https://en.wikipedia.org/wiki/Cannonball_Run_challenge
- ManuelKiessling 4y agoThese people are risking other people‘s lives for their stupid rich-people hobbies. It’s disgusting, really.
- bbbbb5 4y agoI think you might be severely overestimating the risk, people doing these runs obviously do everything in their power to spend as much time on empty roads as possible.
- codethief 4y agoI am a bit torn. I attended a talk by Toman and he mentioned that, apart from having a spotter on the passenger seat, they have many spotters along the entire way and also use drones and thermal cameras to spot cars, so they always know ahead of time what's coming. In particular, he said that they slow down to legal speeds whenever they get near another car. Given all that, I don't think the risk is that crazy high anymore but I do see where you're coming from.
- mellavora 4y agoI usually don't have binoculars up to my face while driving. It interferes with the peripheral vision.
- this_steve_j 4y agoBesides driving too fast, a good pair of binoculars really comes in handy for a wide variety of antisocial activities.