I'm relatively new to this--pardon any vernacular errors. I've a 50mW
veronica transmitter that I'm using around the house and yard. 9/12V DC
power source. It currently has two flexible wire leads serving as the
antenna and ground--each is 70cm in length and is directly soldered to
the PCB. I usually coil them up to keep the range at a minimum.

Is there anything I can do to change the existing antenna setup? I'd
like to be able to switch antennas to attain different coverages. I was
told the impedance on such a unit is different than that of common
connectors (BNC, F, etc). Is there any way to change this configuration
to accept a whip antenna or a rubber duck antenna? I tried wrapping the
existing wires around rabbit ears arranged vertically which seemed to
give me an option for increased range.

Thanks.