Amateur Radio Books and Magazines: Recent and Archive
Amateur Radio Books and Magazines: Recent and ArchiveCurrent amateur radio magazines, as of 2019. Practical Wireless (UK)Radio User (UK)Radcom (RSGB UK)QST (ARRL USA)CQ (USA)CQ-TV (UK amateur...
View Article"Just" my smartphone camera; Computational Photography
After a long time, I have found what I was searching for; improving photographs with computers via multiple frames. I am interested in video for DATV (Digital Amateur TV) and was impressed with some of...
View ArticleCheap thrills: Dual boot dual Xeon workstation; Dell Precision T5610 Windows...
I like building and playing with very fast computers but I can't afford new ones. In the past, I have built a dual Xeon from components but even that was quite expensive. However, it is possible to buy...
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Single and Dual Xeon workstations builds from components 2017
IntroductionWhile writing the blog on my latest dual Xeon workstation, I discovered I hadn't written a post on earlier single and dual Xeon builds. So, a quick post on them using photos from...
View ArticleMacbook Pro issues and fixes
I am a long time PC guy, although my first usable computer was a Singapore copy of an Apple II in 1980. Over the years I have dabbled with Hackintoshes once Apple started using Intel chips.Recently I...
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Hacking high power switching server power supplies for amateur radio use.
Server power supplies are high-quality, heavy-duty, 24/7 supplies but cheap, less than AU$100. They have been modified for amateur use, particularly to turn them on and to raise the output from 12.2 V...
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Radio Applications of Deep Learning Noise Suppression and Speech Enhancement...
NVIDAMy initial contact with DNN noise reduction was the NVIDA RTX Voice beta. It is meant to work with the new NVIDA RTX graphics cards but works with some earlier ones, specifically the GTX 1060 in...
View ArticleOne remote streaming international TV with a VPN; Roku and a secondary router.
One remote streaming international TV with a VPN; Roku and a secondary router.What works (What doesn't work later!)Roku media box with a secondary VPN router.Roku has apps for the streaming services I...
View ArticleBypass newspaper paywalls
Bypass newspaper paywallsOh, joy and rapture, finally a way to beat newspaper paywalls. It works on windows and will probably work with Chrome on Mac. Copy the link and follow instructions. Pretty...
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Low-cost duplexer for 6m, 2m or 70cm
Low-cost duplexer for 6m, 2m or 70cmI am proposing a conceptual design for a low-cost, home-made duplexer for 6m, 2m, or 70 cm. I have not built one to this design but it combines ideas from duplexers...
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RX888 Mk II new generation SDR
A description of the RX888 Mk II in the I/O group for the devices (join if interested)https://groups.io/g/NextGenSDRs/message/431How to set up and use an RX888 MkI or...
View ArticleStarlink Satellite Internet Gold Coast Queensland Australia
Starlink Satellite Internet Gold Coast Queensland AustraliaMy Starlink satellite internet order arrived a couple of days ago, February 2022, after a wait of about nine months. I think the wait was due...
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Transients and dynamics in power supplies for SSB or CW transceivers.
Transients and dynamics in power supplies for SSB or CW transceiversHow to estimate control loop bandwidth from the transient response time?https://www.youtube.com/watch?v=6CdA40ixBkARichtek Load...
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To access movies and TV shows
To access movies and TV shows.1 Need USA VPN to access blocked torrent sites. Either expressvpn or nordvpn. Nordvpn is best for UK TV. They are both about $100 per year. You can use them for...
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Why otherwise good HDMI cables won't always work with modern devices and how...
Why otherwise good HDMI cables won't always work with modern devices and how to test them.A friend had trouble connecting a modern 4K TV streaming dongle, Chromecast with Google TV, to an older 4K TV....
View ArticleVector signal generators
Rigol RSA-3015N 9kHz TO 1.5GHz REAL-TIME spectrum analyser WITH VNAhttps://emona.com.au/products/electronic-test-measure/rf-test-equipment/rsa-3015n.htmlGCARS repeaterUHF Band Pass / Band Reject...
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Tinkering with a mobile/cell phone repeater booster, very high-tech RF
Tinkering with a mobile/cell phone repeater booster, very high-tech RF.I have been tinkering with improving mobile phone reception in remote areas (or buildings that have poor phone reception). There...
View ArticleMeasuring phase noise
Measuring phase noisehttps://edadocs.software.keysight.com/kkbopen/measuring-phase-noise-with-a-real-time-sampling-oscilloscope-584447063.html
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An economical way to measure phase noise using the PN2060A cross-correlation...
An economical way to measure phase noise using the PN2060A cross-correlation Phase Noise Analyzer Six weeks ago, I had heard of the phase noise of an oscillator but didn't really know what it was,...
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Have PN2060A phase noise analyser, will measure
Have PN2060A phase noise analyser, will measure!This post is for measurements of different TCXOs I have on hand. The measurements are not too exact as I am not set up for precise measurements....
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Why the phase noise of a U-Blox GPS module at 10 MHz is terrible
Why the phase noise of a U-Blox GPS module at 10 MHz is terrible.There was a YouTube video showing the poor phase noise of a U-Blox GNSS module programmable pulse output at 10 MHz but cleaner at 8 MHz....
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Measuring GHz phase noise using a dual-channel downconvert with the PN2060A...
Measuring GHz phase noise using a dual-channel downconvert with the PN2060A phase noise analyserDigital PLL Frequency Synthesizers: what they are, how they work...
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PN2060A GHz phase noise measurement using only reference OCXOs
PN2060A GHz phase noise measurement using only reference OCXOs.In this post, I extend my earlier posts on using a PN2060A phase noise analyser to measure GHz signals with downconverters but using the...
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An improvised 9 GHz real-time spectrum analyser with 64 MHz bandwidth using...
An improvised 9 GHz real-time spectrum analyser with 64 MHz bandwidth using RX888, SDR Console and a downconverter.Having worked with a 9 GHz downconverter for my phase noise analyser, I realised I...
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