A link to an article on circuit bending FM transmitters with short transmission ranges:

https://www.wired.com/2015/11/create-your-own-pirate-radio/

One of the main problems which has been holding me back from working with radio is the price of equipment. Most of my Radio project ideas revolves around broadcasting signals over a long distance. Transmitters with a larger transmission radius often have to be built yourself or bought for a premium. To cut around this I wanted to attempt circuit bending a cheap FM transmitter with a weak transmission radius and boost the signal by removing the current antenna and replacing it with a larger one. Also, removing resistors in the circuit board and replacing them with copper wire as explained in the article. The result would be a cheap transmitter that can broadcast signals at a farther distance. The original transmitter I am working with can broadcast signals up to 10 metres away and once tinkered with the maximum broadcast range will be around 300 metres.

Unfortunately some of the parts needed to create this haven’t arrived in time so I haven’t been able to realise this idea before the deadline. However, it’s something I am excited to attempt to create in my spare time during the summer as well as develop knowledge and understanding of ham radio before returning at the start of second year. I will attempt to complete the same concept I used for the streaming project and compare. The difference in sound and the enhancement of certain frequencies of a streaming feedback loop and a radio feedback loop will be interesting to hear.