CHELTON RADALT Patch Antenna ■ Conformal ■ Lightweight ■ Isolation 75dB at 20 inch spacing ■ Beam width 40 deg (H-plane), 45 deg (E-plane) ■ Side Lobe < -40dB Type 20-21 is a radar altimeter patch antenna (RADALT). The antenna is designed to exhibit the electrical characteristics of ARINC 707 and is a conformal design. The antenna operates with a broadside linear polarisation coverage in the Radar Altimeter (RADALT) band to allow transmission and reception of microwave signals from two adjacent antennas. ELECTRICAL MECHANICAL Frequency 4200 - 4400 MHz Polarisation Vertical Radiation Omnidirectional Dimensions 93 x 89 x 4.3 mm (LxWxH) Weight 0.11 kg Connector TNC Type Female Vibration RTCA DO-160C, Section 8, Curve C The Chelton Centre, Fourth Avenue, Marlow, Buckinghamshire, SL7 1TF, UK T: +44 (0)1628 472072 E: [email protected] W:chelton.com Chelton Limited has a policy of continuous development and stress that the information provided is a guide only and does not constitute an offer or contract or part thereof. Whilst every effort is made to ensure the accuracy of the information contained in this Data Sheet, no responsibility can be accepted for any errors or omissions. The copyright of antenna designs and images is copyright protected and owned by Chelton Limited. ©Chelton Limited.