At VHF frequencies layout is critical, by the time you get to UHF layout is super-critical, coils don't even consist of turns any more! - just straight pieces of wire. The higher the frequency, the lower both the capacitance and inductance have to be - by UHF stray capacitance is a huge factor, and so is stray inductance.
It's not a project for beginners, if you want to make UHF circuits you should buy a suitable radio amateur book (ARRL or RSGB), which will contain circuits and exact constructional details.