General Dynamics Mission Systems, through its GPS Source (GPSS) product line, has introduced the MS18ISO, a one-input, eight-output GPS splitter designed for defense and aerospace applications. The unit distributes signals from an active GPS roof antenna to up to eight GPS receivers or devices and features a MIL-STD-704F compliant isolated power supply for reliable operation in military platforms.
The MS18ISO supports L1/L2 GPS, Galileo, GLONASS and BeiDou signals, including M-code. The unit includes waterproofing, EMI shielding and hermetic sealing, and operates across a frequency range of 1 to 1.61 GHz. It provides gain options including 15 dB amplified gain or 0 dB gain, with gain flatness between L1 and L2 below 3 dB.
The splitter accepts external DC input through a 3-pin D38999 military DC power connector. RF outputs J2 through J9 are DC-blocked and include a 200-ohm DC load to simulate antenna current draw for receivers connected to those ports. It operates from 16 to 32 VDC input and supports antenna current up to 100 mA under MIL-STD-704 power conditions. It has an operating temperature range of −40 °C to 85 °C.
Environmental and reliability requirements include compliance with MIL-STD-810, MIL-STD-202, MIL-STD-883, MIL-STD-461 and MIL-STD-704 standards. The device is designed to operate under environmental conditions such as temperature-altitude variations, shock, vibration, humidity, sand and dust exposure, salt fog and explosive atmospheres.
Electromagnetic compatibility testing includes conducted emissions, conducted susceptibility, radiated emissions and radiated susceptibility tests in accordance with military EMC requirements.
Click here to learn more about the MS18ISO.
