This schematic seems like a failed attempt to design a jammer... The Hartley oscillator is wired for approximately 513MHz and the 555 timer output (obviously a wrong design... the chip cannot handle more than 1MHz... and it is not true that it will create a 1MHz even if it is designed for a much higher frequency.. 8.4MHz)...
I think he basic aim was to mix the two frequencies... (f1+f2 or f1+2f2 ...) Still it is really hard to reach the cell band... The harmonics will not be that strong!