This article shows how to modify an inexpensive LNB to accept an external LO-reference signal in order to be used as a K-band downconverter for QO-100 (Qatar Es’hail 2) amateur radio sattelite reception, radio astronomy or similar K-band experiments. This article is a shortened version of a scientific paper that I wrote as the lead […]
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Search Results for: 10 ghz oscillator
Tektronix RSA 306 | GPS Receiver and Clock Reference
The Tektronix RSA 306 is a great low-cost USB 3.0 spectrum analyzer for up to 6 GHz in an ultra low-profile format. If paired with the RSA Map function of SignalVu-PC and a GPS receiver, it becomes an extremely powerful tool for interference hunting and signal strength mapping. This article shows a possible way to […]
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Review: Analog Devices ADF4351
Frequency generation is usually a very critical part in every RF design. The higher the target frequency, the higher complexity. Usually. With the ADF4351, Analog Devices offers an effort-saving component level solution for frequencies up to 4.4 GHz. The ADF4351 from Analog Devices (ADI) is a modern wideband PLL synthesizer with integrated low phase noise […]
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Repairing a MRC DAR Plus Receiver
This is another piece of industry story time. This time it’s about Vislink MRC DAR Plus receivers and transmitters. It shows that even highly integrated devices in the 1 each including shipping. After carefully replacing the MMIC on the PCB, I tested the IF module by applying a 70 MHz signal again. This time the […]
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C-Band DRO LNB Teardown
A low-noise block downconverter (LNB) is a key element in a satellite receiver system and is responsible for converting the relatively high frequency of the received signal into the more convenient L-Band. But how do they work and what do they look like on the inside? Let’s have a look! From a theoretical standpoint, a […]
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