The Wellbrook Communications Receiving Antenna Splitter

The Wellbrook AS 1030 Splitter is a passive transformer Splitter that has a frequency range from 100kHz to 30MHz and is fed by a 12dB gain broadband amplifier. This amplifier and Splitter combination provides an overall gain of 6dB from 100kHz to 10MHz; above 10MHz the gain decreases with frequency. The Splitter has a single antenna input with four outputs to allow up to four receivers to used with up to 25dB isolation between the receivers. The Splitter is built into an ABS box fitted with BNC connectors.

FEATURES

SPLITTER DESIGN

The signal from the Antenna Input is fed to a 12dB Broadband Push-Pull amplifier. The Amplifier uses two medium power RF transistors with transformer negative feedback. The output impedance from the amplifier is 12 Ohms to ensure the correct match to the 4 way Splitter. The 4 way split is provided by cascading two passive transformer 2 WAY-0° Splitters.

INSTALLATION

The Splitter requires a 12 volt stabilized power supply at 100mA. A 12 volt regulated mains plug adapter is recommended. A 315 mA fuse is fitted to the Splitter to protect the power supply from overload. To ensure optimum receiver isolation, fit a 50 Ohm terminator to the unused outputs. The antenna should have an output impedance of 50 Ohms to ensure minimum signal loss.

WARNING: The Splitter must not be used with a transmitter or transceiver. Under no conditions must any supply voltage be connected to the BNC Connectors.

TECHNICAL INFORMATION