R&S®Antenna tuning units

Antenna tuning units for HF communications

R&S®Antenna tuning units
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R&S®Antenna tuning units
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R&S®Antenna tuning units
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R&S®Antenna tuning units, Front High R&S®Antenna tuning units, Front view R&S®Antenna tuning units, Front view

Key facts

  • HF wideband capable
  • Frequency hopping capability
  • Silent tuning functionality
  • EMC and overvoltage protection
  • Maintenance-free, rugged design

Brief description

All Rohde & Schwarz antenna tuning units (ATU) operate in the frequency range from 1.5 MHz to 30 MHz, where they tune antenna impedance to 50 Ω in both receive and transmit modes. Rohde & Schwarz ATUs also provide preselection in receive mode. HF wideband and ALE-4G (MIL-STD-188-110D; MIL-STD-188-144D) are supported as well.

Features & benefits

Frequency hopping capability


R&S®SECOM-H is a Rohde & Schwarz proprietary HF frequency hopping radiocommunications waveform similar to STANAG 4444. It is designed to operate in environments where a certain percentage of the hop set frequencies are blocked by intentional (i.e. jamming) or unintentional disturbances and in environments with severe Doppler spread and/or multipath delay.

Silent tuning function

The Rohde & Schwarz antenna tuning units (ATU) permit silent tuning over the entire frequency range from 1.5 MHz to 30 MHz. The advantage is low probability of intercept (LPI), since Rohde & Schwarz ATU frequency settings are made very quickly and with no RF power emissions. The Rohde & Schwarz ATUs must be connected to the antenna to “learn” its characteristics before using this feature. Learning occurs in a user-defined frequency range within the HF band.

EMC and overvoltage protection

All circuit boards are equipped with EMC filters. Rohde & Schwarz ATU outputs have lightning protection to protect against overvoltage from lightning strikes to the antenna. All antenna tuning units are tested to withstand arcs of 10 kV/10 kA.

Maintenance-free, rugged design

Rohde & Schwarz ATUs have a rugged design that allows for operation 24 hours a day.


Built-in test equipment (BITE)

Rohde & Schwarz ATUs continuously monitor the entire system to display deviations from the normal operating status on the control unit.

Available models

Available models
Frequency range (transmit)
RF output power


Frequency range (transmit)
1.5 MHz - 30 MHz
RF output power
150 W (PEP)


Frequency range (transmit)
1.5 MHz - 30 MHz
RF output power
500 W


Frequency range (transmit)
1.5 MHz - 30 MHz
RF output power
1000 W

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General and legal information

Manufacturer's recommended retail price (MSRP). The price shown does not include VAT. Prices and offers are only intended for entrepreneurs and not for private end consumers.

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Terms & Conditions of the Prize Draw 10 years Rohde & Schwarz oscilloscopes

1. The prize draw “10 years Rohde & Schwarz oscilloscopes” (herein referred to as “Draw”) is organized by Rohde & Schwarz GmbH & Co. KG, Mühldorfstraße 15, 81671 Munich, Germany, Tel. +49 89 41 29 0 (herein referred to as “R&S).

2. All participators can register to the draw during January 01, 2020 to December 31, 2020 with their name, company name and business e-mail.

3. Participation is free of charge and not dependent on the purchase of goods or services.

4. The draw is only open to legal entities and only the legal entities are able to win the prizes. An individual person is not allowed to participate on its own name and its own account but as a representative of a legal entity filing the participation form in the name of and on behalf of the legal entity.

5. The prizes to win are 1 of 10 R&S®RTB2000 within the time frame January 1, 2020 to December 31, 2020:

Prize: 1x R&S®RTB2000 Digital Oscilloscope

6. The draw takes place at Rohde & Schwarz headquarters, Muehldorstrasse 15, 81671 Munich. The winner of the prizes will be informed by e-mail within 5 (5) working days.

7. The authorized representative of the legal entity shall inform Rohde & Schwarz about the acceptance of the price. In case of the denial of the acceptance, or no answer within two (2) weeks, a new winner will be drawn. If no winner can be determined within four (4) weeks, the draw ends and the prize forfeit.

8. R&S’ employees and members of their families and also person being familiar with the process of the draw and members of their families are excluded from filling the participation form.

9. No cash equivalent or exchange of prizes is allowed. Prizes are non-transferable. All taxes, levies, duties, fees and other charges levied in the participant´s country shall be borne by the participant.

10. Personal data will be processed only for the purpose of this prize draw and deleted four (4) weeks after the draw, if not agreed otherwise.

11. Any Participant who does not comply with these Terms & Conditions may be disqualified by R&S from this Competition. In such cases, prizes can also be withdrawn retrospectively. In case a prize is withdrawn retrospectively due to the non-compliance with these Terms & Conditions, it shall be returned by the respective participant at his cost to R&S’ address mentioned under Nr.1 and a new winner will be drawn.

12. The participants cannot claim the prizes of this draw and no legal recourse is permitted in this respect.

13. The draw and any contractual relationship arising therefrom between R&S and the respective participant shall be governed by and construed in accordance with the laws of Germany, without any recourse to the conflict of laws. The courts of Munich, Germany, shall have exclusive jurisdiction in case of any disputes arising directly or indirectly from the participation in this Competition.

* “fast delivery” inside 7 working days applies to the Rohde & Schwarz in-house procedures from order processing through to available ex-factory to ship.