Comant CI-420-221 GPS Gain Arnic Teardrop TNC

The Comant CI-420-221 ComDat® is a standalone GPS antenna designed with a popular teardrop-style mounting footprint and a female TNC connector.

Operating at 1575.42 MHz, the antenna provides 17 dB nominal gain and is intended for use with compatible 17 dB panel-mount GPS receivers. Its right-hand circular polarisation (RHCP), hemispherical radiation pattern and 50 Ω output impedance support GPS antenna installation requirements where the specified electrical characteristics are needed.

• Manufacturer part number: CI-420-221
• GPS frequency: 1575.42 MHz ±3 MHz
• Gain: 17 ±3 dB
• Connector: TNC female
• Polarisation: RHCP
• Output impedance: 50 Ω
• Supply voltage: 4–24 V DC
• Current draw: 20 mA maximum
• Noise figure: 3.8 dB maximum
• Environmental documentation: RTCA DO-160D, including direct-effects lightning

The CI-420-221 is not intended for most portable or hand-held GPS receiver systems. Confirm receiver interface requirements, installation configuration and applicable airworthiness requirements before purchase and installation. Refer to the manufacturer’s technical data and installation instructions for installation details.