V/UHF Tuneable Antenna The 12-190-310 V/UHF Tuneable Antenna is a multiband, low profile, blade antenna designed for operation in the frequency bands 30 MHz to 88 MHz, 108 MHz to174 MHz, 225 MHz to 530 MHz and 960 MHz to 1220 MHz. When operating with the AN/ARC 210 radio, the 12-190-310 should be tuned using a Cobham Antenna Systems Type 7-163PIN160 Logic Control Unit. The 12-190-310 is configured as three separate radiating elements. The VHF function is fulfilled by a PIN diode tuned structure. The topplate surmounting the blade provides a capacitance which is tuned by an arrangement of binarily related switched inductive elements, This produces a high efficiency structure with some degree of selectivity, particularly at low FM frequencies. The UHF antenna is configured as a broadband passive element. predominantly matched using essentially lossless techniques. The VHF and UHF antennas are combined within the blade by a contiguous diplexer consisting of two five section filters exhibiting a Tchebyscheff response to a single RF connector. The L-band antenna comprises a fan monopole. reactively matched and fed via a separate RF port. The 12-190-310 comprises a blade of aerofoil section surmounted by a capacitive top loading plate. The electronic circuitry is mounted on a circuit board housed within the blade. which is sealed at the base by an aluminium alloy baseplate. The baseplate also supports the three connectors. The Chelton Centre, Fourth Avenue, Mario' 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.

High Temperature Power Rating RF Power Frequency VSWR Frequency Radiation Nominally omnidirectional in azimuth Polarisation Essentially vertical when mounted vertically VHF/UHF: TNCfemale L-Band: N female Mounting 10 holes fixed location MIL-STD-810E, Method 501.3, Procedures I and II Continuos Operation: +55°C Altitude MIL-STD-810E, Method 500.3. Procedures I Acceleration MIL-STD-810E, Method 513.4. Procedure I 13.5 g all axes Mechanical MIL-STD-810E, Method 516.4. Procedures I Functional: 11 ms, 20 g terminal sawtooth Crach safety: 11 ms. 40 g terminal sawtooth Vibration MIL-STD-810E, Method...