ADS-B – Automatic Dependent Surveillance-Broadcast

Before we talk about ADS-B 2-Way Combiner, let’s first have a closer look at ADS-B in general. Air traffic control system known as ADS-B stands for “Automatic Dependent Surveillance-Broadcast”. It is used to indicate airspace aircraft position. The standard was first created in 2005, therefore it is rather new. Since 2020, it has been a requirement for all participants in the USA, and ADS-B has been required throughout Europe starting December 7, 2020.

Unlike ADS-B, which actively communicates aircraft location information to the environment, classic airborne radar follows aircraft by reflecting transmitted radar signals.
Participants use navigation satellites to independently identify their positions, then transmit this information in a standard format to the environment using the 1090 MHz frequency.

If you want to learn more about ADS-B click on this video link.

ADS-B is the automatic method by which appropriately outfitted aircraft broadcast information such as identity and flight number together with technical data such as location, flight direction, and altitude. The transmission is broadcasted on the frequency 1090 MHz. There is no encryption during the transfer. Reception is easily doable with an affordable SDR and appropriate software or a specialized receiver connected with an excellent ADS-B antenna. Contact us via e-mail for a wide range of ADS-B antennas.

ADS-B 2-Way Combiner/Divider 1090 MHz

The ADS-B 2-Way Combiner/Divider is the perfect way to increase gain or coverage. It allows you to stack two antennas efficiently!

Electrical specifications:
Frequency: 1090 MHz
Nominal Input Impedance: 50 Ohm
Input Return Loss batter then: -30 dB
SWR Across Entire Band: <1.05
Maximum Power Input 800 W
Connectors: 3 x “N”

SWR characteristic of ADS-B 2-Way Combiner: Achieved SWR is perfect. Less than 1: 1.05 between 1085 and 1095 MHz.

Smith Chart of ADS-B 2-Way Combiner:

 

If you need to connect four antennas, look at our 4-Way ADS-B divider here.

Dividers in production, from 50 MHz up to 1300 MHz are here.