Those projects are really crappy. I would frankly like to say ..
88-108MHz is not a Low Frequency Band, it's RF Band and RF techniques must be carefully applied.It's clear..
Today, double sided PCB costs are really low and SMD components are everywhere , cheap and available.
If you intend to build your own Transmitter and Receiver, I suggest you to dig more in Internet and find more professional looking projects, not like these craps.
Simple is better but not too simple as ..