CL schrieb:

Have 2 types available. A Discone and a Ground Plane. Both good for 25 -
1000 MHz.

On technical reason a ground plane antenna can NEVER work as a broadband
antenna. It is limited to some frequencies or relatively small frequency
ranges with acceptable gain.

A discone has some gain above 0dBi on the wohle specified range up to 2
dBi. A groundplane has some gain up to 3 or 4 dBi on resonant
frequencies and dramatic loss down to -(!)15dBi on nonresonant ranges.

odo