The R&S SK4105 high-power HF transmitter from Rohde & Schwarz combines
high transmission power and reliability with a small footprint, making it ideal
for air traffic control over large areas with harsh site conditions, such as Greenland.
Nuuk/Munich, December 13, 2022 - In the summer of 2023, Rohde & Schwarz will
be delivering low-maintenance and compact
R&S SK4105 shortwave transmitters to Naviair, the Danish air navigation
service provider that handles air traffic in the lower airspace from the Flight
Information Center (FIC) in Greenland.
Greenland’s airspace is huge and transmitter stations are placed in remote locations.
Naviair operates several HF and VHF radio systems at strategic points along the
Greenlandic coast. The Flight Information Center (FIC) in Nuuk, Greenland, is responsible
for primary communications. Its legacy HF transmitters will soon be replaced with
the new, high power R&S SK4105 shortwave transmitters.
"The R&S SK4105 is ideal for the demanding
Greenland environment with a compact footprint, reduced maintenance, low power consumption
and high reliability" Henrik Tvilling Jensen, Project Manager, Naviair. "The new
transmitter meets our environmental and performance requirements."
The R&S SK4105 transmits in the frequency range from 1.5 MHz to 30 MHz
with up to 5 kW transmission power. The high transmission power enables clear,
long-range radio links between ground stations and aircraft. The transmitter has
a liquid cooling pump unit and fits into a 19-inch rack. Other transmitters require
up to four times as much space and more frequent maintenance because of mechanical
"Liquid cooling relieves thermal stress on all components in the housing and
increases overall system reliability," explains Marius Münstermann, Vice President
Air Traffic Control, Rohde & Schwarz. "This is very important for transmitters
with safety-critical tasks, especially those in remote, snow-bound locations that
are very difficult to access. Under such operating conditions, waste heat from the
transmitter housing can be used to warm the transmitter shelter."
Compared to air-cooled RF transmitters, overall power requirements are lower.
This reduces operating costs and helps air navigation service providers shrink their
carbon footprint. In regions outside Greenland's permafrost climate, liquid cooling
has another benefit: since the cooling system is independent of ambient air, the
transmitter can also be operated in locations with little air conditioning.
"The R&S SK4105 control transmitter is based on R&S Series 4100 radio
devices, whose 1 kW version has been successfully used in several Greenland
coastal radio stations for vessel traffic," Mr. Münstermann says. "The exciter is
in line with EUROCAE ED-137C criteria and is software defined, making it easier
to integrate new transmitter functions and adapt to future radio standards. As part
of the Rohde & Schwarz CERTIUM portfolio, the HF high-power transmitter is compatible
with other CERTIUM hardware and software and can be expanded to suit specific applications."
About Rohde & Schwarz
The Rohde & Schwarz technology group is among the trailblazers when it comes
to paving the way for a safer and connected world with its leading solutions in
test & measurement, technology systems, and networks & cybersecurity. Founded
nearly 90 years ago, the group is a reliable partner for industry and government
customers around the globe. On June 30, 2022, Rohde & Schwarz had around 13,000
employees worldwide. The independent group achieved a net revenue of EUR 2.53 billion
in the 2021/2022 fiscal year (July to June). The company is headquartered in Munich,
R&S® and CERTIUM® are registered trademarks of Rohde & Schwarz GmbH &
Co. KG. All press releases, including photos for downloading, are available on the
internet at www.press.rohde-schwarz.com.
Rohde & Schwarz USA, Inc.
6821 Benjamin Franklin Dr.
Europe, Africa, Middle East
+49 89 4129 12345
+1 888 837 8772
+1 410 910 79 88
+65 65 13 04 88
+86 800 810 8228 or +86 400 650 5896
Posted December 13, 2022