- Vector network analysis kicks off
In 1950 Rohde & Schwarz developed the first complex network analyzer, calling it the Zg diagraph. For the first time it was possible to directly measure the phase of S-parameters of a signal. The instrument was primarily found in measurements on sound and TV broadcasting antennas. But it was also used to test special cables in telecommunications, and it served microwave engineers as a Smith chart. The ZDU Zg diagraph (30 MHz to 300 MHz), introduced at the beginning of the 1950s, was followed by the ZDD (300 MHz to 2400 MHz) – at 62 kg no lightweight by present-day standards.
- Expanding scale – the 1000th employee is hired
In 1954 Rohde & Schwarz reached the magic mark of 1000 employees, and this development continued at a fast pace. Just six years later the workforce had doubled, and in 1969 there were 3000 committed people on the payroll of the Munich electronics company.
- Serving air safety - development of radio direction finder NAP1
The first direction finder from Rohde & Schwarz was the NAP1. It was used in air traffic control as an addition to radar since the latter alone did not enable unique identification of an object in flight. In addition, the direction finder produced data that could be processed in radiomonitoring as well as ATC. This played an important role in air emergencies, ground control of sport aircraft or if radar failed. The system operated by Germany’s ATC administration at Munich Airport was a visual direction finder, the located object appearing on a screen in the form of an illuminated cursor. It was the first development of this kind in Germany after the war.
- Today's company HQ set up
A company relocates. In 1956 a building was constructed on the Trausnitzstrasse/Mühldorfstrasse site (near Munich’s Eastern Station) to house communications and broadcast engineering. It marked the start of a move from Tassiloplatz, where the principal office and various departments had been located until then, to premises in Mühldorfstrasse. This is where the main building of the company emerged in 1960/61, adding a good 10,000 sqm working space – in other words, a 50 percent enlargement. The new building accommodated the executive board, central engineering, manufacturing shops, test shops, administration and product-related divisions.
- EK07 shortwave receiver sets standards
A relatively high price, not all that compact in design, and a weight of 53 kg to 66 kg – not necessarily ideal specifications for a shortwave receiver. But in every other respect the EK07 was the star of its day in shortwave radio. The signal corps of the German army opted for it when looking for a standard HF receiver. The EK07’s excellent receiving characteristics, high frequency accuracy and ease of operation convinced them. And the EK07 was rugged too. Deutsche Welle, Germany’s international broadcaster, installed the receiver in a relay station in Kigali/Rwanda. And the EK07 also stood the test on a Belgian-Dutch expedition to the South Pole in 1964.