Profile: Technical Systems Associates. is a designer of electronic components. Our product line includes antennas, polarizers, rotary joints, slip rings, microprocessors, pedestals, controllers, feeds, radomes, systems and waveguides. Our rotary joints include rectangular waveguide, single and double ridge waveguide and coax to meet specific needs. Our TSAA series model 10027 antenna is a wide band circularly polarized antenna designed for airborne applications. Its wide frequency range makes it ideal for multifunction usage.