Sorry!!!
Best achievable performance occurs when the ground of the SAW device, C2 and C3, are physically close, preferably a single point on the
PCB. Transistor selection may be the BFS-17A, MMBR-901, MMBTH-10LT1, MMBTH-17LT1 or similar
NPN Silicon transistor.
C1 = 1 to 5pF, C2 = 8.2 to 18 pF and L1 selected/designed to resonate with the series combination of C1 and C2.
Best is C1 = 3.3pF and C2 variable from 5 to 30pF, L1 = 1 turn, 1 cm air core, 18awg wire.
Values for Rb = 100 Kohm and Rc = 47 ohm, Resistor Re = 470 ohm.
In most cases, you must adjust this values.
Attached is another TX circuit.
Regards