DDK6 (Deutscher Wetterdienst, Germany)

From goughlui.com 7 months ago in Blogs

The triplet of stations from Germany (DDH3/DDK3/DDK6) are distinguished in the radiofax field. They operate on a +/-425Hz shift (whereas others operate on +/-400Hz), and they have the highest transmission powers – 10kW for DDH3 and 20kW for DDK3/DDK6. This … Continue reading →

Articles from Dr. Gough Lui

Launch-Day Review: Rohde & Schwarz NGM202 Power Supply (Overview)

From goughlui.com 2 days ago in Blogs

I seem to be having a lot of luck with Rohde & Schwarz lately, as a RoadTester of their RTM3004 oscilloscope, I was awarded RoadTester of the Year. I also RoadTested their HMP4040 power supply, which led to an opportunity...

R&S NGM202 In-Depth – Ch6: Teardown

From goughlui.com 2 days ago in Blogs

It wouldn’t be a review challenge review if I didn’t at least attempt to take a peek under the hood to see what it’s made out of. Join me as I take the covers off and take a look underneath....

R&S NGM202 In-Depth – Ch5: Instrument Performance Testing

From goughlui.com 2 days ago in Blogs

This section attempts to test the NGM202 to verify its datasheet specifications across various scenarios. In order to maintain balance between the chapters, some instrument features have been covered in prior chapters. For information about the in-built features and options...

R&S NGM202 In-Depth – Ch4: Remote-Control Interfaces

From goughlui.com 2 days ago in Blogs

A useful feature of many power supplies is their programmability through their remote-control interfaces which allow them to be integrated into automated testing workflows. This chapter examines the NGM202’s various remote-control interfaces and performs a number of simple experiments using...

R&S NGM202 In-Depth – Ch3: Standalone Operation

From goughlui.com 2 days ago in Blogs

This chapter explores the NGM202 from the perspective of standalone operation, as you might have on a bench-top application. I offer my opinion on the user interface, acoustics and various in-built features and options. User Interface & Ergonomics The NGM202’s...

R&S NGM202 In-Depth – Ch2: Unboxing

From goughlui.com 2 days ago in Blogs

As part of my launch-day review of the NGM202, this chapter focuses on the unboxing of the instrument. Note that as this was a pre-release unit, the packaging and inclusions may vary slightly compared to the retail version. Unboxing The...

R&S NGM202 In-Depth – Ch1: Market Survey & Feature Introduction

From goughlui.com 2 days ago in Blogs

Before I delve into the Rohde & Schwarz NGM202 unit in earnest, it would be a good idea to begin with a little background to what makes this a specialty power supply and how its specifications and features compare to...

Review: Sennheiser PXC550 Wireless Adaptive Noise Cancellation Headphones

From goughlui.com 2 weeks ago in Blogs

Many moons ago, I upgraded to a Sharp Aquos S3 which caused a new problem for me as it lacked the familiar 3.5mm stereo headphone jack which I was using my AudioTechnica ATH-ANC9 with. While there was an included USB-C...

Lucy Helton’s SSTV Ham Radio Project: a “Reception Experience” Remixed Microsite

From goughlui.com 2 weeks ago in Blogs

During the period of 9th to 23rd April 2019, Lucy Helton (KD2MFV) partnered with Jón Þ Jónsson (TF3JA) to embark on creating a transmission artwork which was known as the “SSTV Ham Radio Project”. The transmissions were sent on the...

Experiment: Examining Solid-State Drive Temperature Reporting

From goughlui.com 2 weeks ago in Blogs

Regular reader and frequent contributor Franc e-mailed me around two weeks ago with an interesting request – “Would you consider investigating how SSDs report their temperatures?” He reports of discrepancies in temperature readings in a Kingston A400 NVMe version versus...