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GPS and GLONASS Antenna AD420

SKU: ANT-0001

GPS / GLONASS Antenna AD420


A robust, compact symmetrical antenna, the AD420 is designed for the reception of low power satellite transmissions down to -130 dBm in areas where general purpose antennae are inoperable due to L-band interference.

The antenna element is a shaped dipole with right-hand circular polarisation, an Omni-directional radiation pattern in azimuth, and good reception down to 5 degrees in elevation.

The element is connected to a built-in GaAs FET amplifier with a precision low-loss comb filter. A comb filter’s frequency response is shown in figure 2 for the band 1530 to 1560 MHz enabling DGPS reception. Other options are filters tuned for the band 1530 to 1575 MHz for DGPS and GPS reception (also figure 2) or 1570 to 1610 MHz for GPS and GLONASS reception.

The amplifier gain is factory preset within the range of 30 dB to 45 dB with an overall noise figure of less than 2.5dB. The amplifier is phantom powered via the coaxial output lead with a 3.3V to 20Vdc supply at typically 35mA. The amplifier complies with EMC requirements and is CE marked.

From AMI Marine Limited, Manufactured by Alison Microwave Ltd.

Additional information

Item Measurements

16 x 11 x 13cm – 1.65kg

Packed Weights & Dimensions

31 x 25 x 26cm – 2.3kg


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Item Measurements

16 x 11 x 13cm – 1.65kg

Packed Weights & Dimensions

31 x 25 x 26cm – 2.3kg

Please note that due to the complex nature of shipping for certain products it will be more cost effective to contact AMI directly using the [email protected] address or the telephone number +44 (0) 2380 480450, for a bespoke quotation.

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