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Antenna Control System, HF/VHF, TX/RX coupler/switch, 1.6-88 MHz


The antenna switch is intended for use with 5 transceivers together with 1 or 2 antennas. During transmission the active transmitter is automatically connected to the antenna, while an inhibit signal is issued to the other transmitters—the receivers are either disabled, or connected to the (optional) receive antenna.

The receive signal is amplified and distributed to all receivers with a low noise amplifier.

It is possible to give priority to one transmitter. For fail-safe operation one transmitter is connected directly to the antenna in case of power failure.

The unit uses vacuum relays for fast/high power switching. RF sensors are used for TX/RX switching

Ethernet and USB connectors are available for remote control, and interfacing to the radio system. A ¼VGA display is also used for control and indication.

See datasheet for a closer functional description.

Frequency Range 1.6-88 MHz
Nominal Impedance 50 Ω
TX Signal Path Power Rating: 500 W continuous, 1000 W PEP
Loss: 0.1 dB typical @ <30 MHz
0.2 dB typical @ 30-88 MHz
TX/RX Switching Switching Speed: 1 ms typical
Switching Level: 37 dBm ±3 dB
SSB Delay: 0..2.55s configurable
RX Signal Path Gain: – 4..2 dB
P -1dB, Out: 30 dBm typical
IP3, Out: 40 dBm typical
Isolation, Out: > 20 dB @ 1.6-30 MHz
> 10 dB @ 30-88 MHz
Max. inp.Power: 30 dBm continuous
Power Supply 18-32 V @ < 2 A, galvanic isolation
Connectors RF: N female is standard, others on request
Power: Amphenol 62GB series, others on request
Other: Circular, USB, RJ45
Size 3U, 19″, 455 mm depth (ex. handles and connectors)
Temperature Range Operational: – 0°C to + 55°C (optional – 20°C to + 70°C)
Storage: – 40°C to + 70°C