FM transmitter 88-108MHz using two transistors and 1.5V battery

This is also the 88-108 MHz FM transmitter circuit that use 1.5 volts battery power supply source and use two-transistors so easy to builds and small size circuits.

Figure 1 the schematic diagram

Figure 2 the components layout
The coil-L is 8 turns of 22 swg wire wound with a inside diameter air core of about 5mm. Then stretch the coil to width of 9 mm.
And to tap out to the antenna at 3 turns.
You can use all transistor number : 2SC461, 2SC784, 2SC785 instead of 2SC183 transistor and 2SC668, 2SC77 for 2SC185.
Then adjust the all current of this circuit by Stretching or shrinking the coils and adjustable TC (trimmer) to have the current approximately 3mA the frequency in 88-108 MHz range.