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Micro-Tel MSR-901
Precision Microwave Receiver - this page is a stub

The MSR-901 was a precision microwave receiver developed and produced in the early 1980s by Micro-Tel Corporatation in Hunt Valley (Baltimore, US). The receiver covers a frequency range of 1-12 GHz and was intended for Technical Surveillance and Counter Measures (TSCM).
 
The receiver was built using state-of-the-art components, such as YIG oscillators and filters, and was primarily built for various agencies of the US Government. Later, the receiver also became popular with the agencies of other countries, who needed an export license for it, as the MSR-901 was regarded a strategic item.

The image on the right shows a typical MSR-901, housed inside a Samsonite briefcase. The unit is fully self-contained and has a built-in AC mains power supply (at the rear) as well as rechargable NiCd batteries for mobile use.
  
Micro-Tel MSR-901

The MSR-901 is also known as a counterespionage or intercept receiver. All controls and connections are on the front half of the receiver. A suitable antenna can be connected to the N-connector socket at the front right. The MSR-901 was followed by the slightly improved MSR-902 (1-18 GHz), the MSR-903 and finally the MSR-904.
 
Samsonite briefcase with Micro-Tel MSR-901 Micro-Tel MSR-901 Micro-Tel MSR-901 in Samsonite briefcase Close-up of the MSR-901 Close-up of the controls Frequency adjustment Brandname, model number and calibration tag Power supply

 
Help required
Although the MSR-90x range of microwave receivers has been very popular within certain circles, it is very difficult to find any documentation about them. We are currently looking for the user manual and, if possible, the service manual. Furthermore, we like to hear stories from people who have used these receivers in the field. If you think you can help, please contact us.
 
Further information

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