So recently I decided to get into warspying. Warspying (or warviewing) is searching for wireless analog A/V cameras and senders in the 2.4GHz ISM band. I was able to build this for less than $30. The 7" screen would probably be the most expensive part but I got it from a friend because it's pretty much useless as an ATSC receiver, but it does have A/V inputs and a headphone jack. If someone pulls you over you can just attach a whip to it and set it to TV mode. It uses a Pocket Jump portable battery with switchable 12v/5v outputs which will give me at least 6 hours of receiver use, with the monitor lasting about 2 hours (but I'm sure it will run longer). I'm going to add a Y cable and install a 5.8GHz receiver as well and run it off USB which will give me 36 channels to work with across the two bands. I've already started finding feeds around town when running the smoke test. For anyone wondering yes, these transmitters are still around and you can still build a receiver for very little money.
http://i.imgur.com/aw1eUi6.jpg
http://i.imgur.com/ZlKouou.jpg
http://i.imgur.com/aw1eUi6.jpg
http://i.imgur.com/ZlKouou.jpg
Last edited: