The 436CP42UG (Ultra-Gain) sets a new performance standard for UHF circular polarized antennas. Gain and F/B are excellent. The boom length is matched to the 2MCP22, and together they form an unbeatable satellite communications package. The extremely clean pattern maximizes forward gain and F/B. The pattern is important in order to match the antenna’s noise temperature with modern low-noise preamps. The CP42 is also excellent for ATV, repeater operation, and long haul tropo DX and EME around 432 MHz. The driven element and 'T' blocks are CNC machined, with connectors O-ring sealed for low maintenance and long-term peak performance. Internal connections are embedded in a space-age silicone gel that seals out moisture and improves power handling. The 3/16” 6061-T6 rod elements are centered in the boom to minimize interaction and maintain low ellipticity. Insulators are UV stabilized and locked in place with stainless retainers. The central boom section is 1-1/2" dia., tapering, front and rear,through 1-1/4" sections to 1" ends.If you are looking for rugged construction and top-notch performance, For EME use, M2 can supply an optional polarity switch and parts needed to convert these to dual polarity Yagis. Contact us for more details.