AIS Splitter

Pole/Zero offers an integrated AIS Splitter/Receiver system in a rugged flange mount or DZUS chassis. The splitter taps off a path from the existing transceiver, auto-blanks the secondary path during primary high-power transmissions (fast attack, slow decay), and provides high selectivity bandpass filtering for receiver protection and interference mitigation. This Splitter/Receiver enables maritime Automatic Identification System (AIS) monitoring from an existing VHF antenna path. In addition, an on-board converter provides RS-422 balanced outputs from unbalanced RS-232 inputs. Includes mounting accommodations for Smart Radio, Shine Micro and Protec receivers (wiring harnesses available).

This Splitter/Receiver supports frequency hopping or single channel tactical communications; SDR, test/measurement, and other applications needing multiple receive outputs and high power handling. Potential installations include avionics, UAVs, ground systems and vehicles, as well as shipboard or lab environments.

In addition to the AIS application, this splitter design can be tailored for other applications such as adding a Guard path to an existing antenna. Please contact your sales representative at 513.870.9060 or for details. 


Part Number: 218000
Frequency Coverage: 30-512 MHz
Input/Output Impedance: 50Ω
VSWR: 1.5:1 typical
Mainline Insertion Loss, Isolated: <0.5 dB
Mainline Insertion Loss, Shared Rx:

 30 to 159.5 MHZ            0.5dB

159.5 to 164.5 MHZ        3.5dB

164.5 to 512 MHZ           1.0dB

Transmit RF Power Handling 100 W
Secondary Receive Frequency (1):  156.025 – 162.025 MHz
Secondary Receive Gain: 8 dB typical
Secondary Receive NF (w/ Split Loss): 14 dB typical
Secondary Receive Selectivity: -65 dBc @ ± 10 MHz
Transmitter-Secondary Isolation (2):  -50 dB
DC Input Power: 28 VDC, <250 mA
DC Output Power:  12 VDC, <250 mA
Temperature Range:  -40ºC to +55ºC
Size (excluding connectors)(3):  5.0 x 7.5 x 1.2 (in.)
65.405 x 146.05 x 215.392 (mm)
Weight Approximately 24 oz./.68 kg



1. Other secondary frequencies are available upon request. 
2. The secondary path is blanked when the transmitter frequency is close enough to cause non-linear effects. 
3. DZUS package also available including mounting provision for AIS receiver. 

Flange Mount:


DZUS Mount:

Contact Sales

The Pole/Zero Sales and Marketing team is a highly qualified group of engineers who can relate to your design problems and provide expert assistance. They make sure you get the right components at the right time and price.

Feel free to call upon our sales team (513) 870-9060 at any time. They are here to assist you and are happy to do so.