A volumetrically compact and efficient antenna, with a high radiation resistance and low losses, that can be designed for any frequency, and which has a gain within 1 dB of that of a full-sized vertical monopole radiator or, in its horizontally polarized form, within 2 dB of that of a horizontally polarized half-wave dipole. The control assembly provides a means to translate user input, such as rotating a lever to operate a centercase. The upper region of the web-work structure includes a deep upper beam structure that has downwardly extending skirts. The laser mixes the 1109 nm pump wavelength with the 5th harmonic of the 1171 nm fundamental, which is at a wavelength of approximately 234.