I am currently looking for a good solution to create a simple VHF dipole connected to a RF preamplifier / band pass filter. The intended use is 88-108 FM RX. I see basically two solutions for a rigid antenna design :
two classic screw terminal consumer telescopic antennas for each dipole leg.
two BNC terminated telescopic antennas for each leg.
I prefer the BNC solution because it is sturdier and easier to streamline and connect to a PCB with through hole sockets. However I wonder what to do with the BNC ground terminal. Keep it floating, connect it to the circuit common ground, or shunt it with the center pin and dipole leg ? FIY I will use a surface mount common mode choke rated for VHF, so the dipole will balanced. The preamp case is unshielded, only the RF preamplifier circuit path will be copper clad.