A simple vhf active antenna using a single BFG65 transistor which is a low noise type.
The telescopic antenna and the wide band rf amplifier combination is known as an active antenna.
The antenna is a 1.6 meter telescopic dipole which works in lambda/2 from 60 MHz to 187 MHz or as a multi-lambda dipole as far as 900 MHz.
L1 is made of 10 turns of 60 Ω coaxial cable with 2.5 mm diameter, coiled on 10 cm long ferrite core with 10 mm diameter.
If the receiver is at 2 meter distance from the active antenna, connect it at K1 with an ussual cable like RG58. If the radio signals are weak increase a little the R3 value. Do not do this if there are strong radio signals.
With R3 = 560 Ω, the current consumption is 20 mA. The fm dipole antenna gain is around 12 dB, with a noise factor of 1 dB. THis ensure results comparable with Yagi antenna.