Rick Karr over @ Bill Moyer’s Journal has a great story about low power FM and how it might go away when it’s most needed… Imagine climbing a hundred-foot radio tower in the howling headwinds of a Category 3 hurricane so that you can stay on the air and keep your neighbors informed as catastrophe […]
This is interesting, “Blastwavelabs” bought a portable cell phone jammer from a company called DealExtreme, it appears the jammer ships set to frequencies outside North America but it can be modded to work by turning the trim pots a bit (small potentiometers to tune/trim the voltage)… I’m not sure that would actually work that great […]
OpenFM’s Open source radio transmitter – When Adapted Consulting’s co-Founder, Frederic Renet couldn’t find a commercial radio that was energy efficient, easy to repair and affordable, he decided to build his own. These requirements were crucial for where he was installing radios in rural Africa. Based on that first model, Fred has designed a new […]
cryptonoid writes – First thing i did was flash dd-wrt firmware on it. Since FONera router has gpio pins i decided to use one of those pins to control AC loads or turn a switch ON/OFF remotely. There’s a similar/better way of controlling AC loads – check out dd-wrt wiki. However, i only had one […]
Kevin Kelly has a great round up of crystal radio builds, free plans and kits (some I haven’t seen either) – Link. Inspired related round up: HOW TO – Building a crystal radio out of household items – Link. Refugee Radio – An energy-independent AM-receiver radio… – Link. Building a radio in 10 minutes – […]
Well this is interesting, usually sharing WiFi lately will get someone in trouble, but now Time Warner customers might be using FON (fee/free WiFi community) to share their WiFi to anyone – Link. Related: Hacking the FON router – Link.
LeorickSimon writes in – Using your old phones, you could create personal “micro” telephone exchange as simple as above circuit. I manage to solder the test circuit less than a minute. Than connect the phone and test it. It works. So why 39 ohm? From Epanorama Dot Net, the correct value of the resistor should […]
