This product comes from Alaris Antennas catalogues

Compact Marine Adcock DF Antenna

DF-A0158

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The DF-A0158 is a wideband compact DF antenna with a ruggedized design to suit harsh environments and applicationsbrThe antenna uses primarily Adcock type arrays, and incorporates a patented high sensitivity hybrid loopAdcock topology for the lowest frequency band to maintain high sensitivity for its size. Each band offers an omni-channel output that can also be used for monitoring.brBand switching is done by a switch integrated into the antenna. An on-board wideband noise source is provided to allow for downstream RF channel calibration. An on-board electronic compass is provided.brCommunication to, and control of, the antenna is provided by means of RS485 interface. Band switching can also be accomplished via direct differential pair switching for higher speed if needed.

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Specifications

Frequency range	20 - 6000 MHz
Gain	NA
Channels per band	3
DF method	Watson-Watt or 3-channel CIDF
RMS accuracy	< 5° (using only pure WW)*
Polarisation	Vertical
Omni-output	Yes (utilised for Watson Watt estimation
Nominal input impedance	50 O
Control	- RS 485 serial at 115 kbaud - two switching lines
Switching time	< 100 µs using serial commands < 4 µs when using dedicated lines
Integrated compass	Available on RS485 serial. Accuracy 2°
Power consumption	< 1 W (noise source and compass o
RF calibration	Internal wideband noise sourc
Power supply	15 ±2 V DC
Antenna outputs	3x N-type female

Product Applications

Signals Intelligence

Radio Direction Finding

C-ESM