[Swansea Hackspace] TechHub Buzzer/Access Project

[Alan Cox]

> this?  Have a Spark Core at either end to switch on low power FM radio 
> transceivers for the audio, perhaps with something like this for the 
> transmitter 
> http://www.circuitsgallery.com/2012/09/simple-portable-FM-transmitter.html

Because operating one like that is an offence in the UK and the range
you'd get on permitted power with the right approved equipment is also
measured in feet not yards.

Alan