Solar cycle 25 should be a repeat of our last eleven year cycle. For the next five years, though, high frequency radio propagation will definitely improve. Read more
Tag: hamr
Wideband Loop Helper Build
Overall, my wideband loop helper build was fast and simple. Everything was made easier with isolation milling a small PCB on my CNC. Read more
Wideband Loop Helper Design
Some online calculators and open source software made wideband loop helper design easy. Using a simulator also helps you make adjustments to use readily available components. Read more
Wideband Loop Helper Project
My wideband loop helper project should let you eliminate overload from strong nearby broadcasters while enjoying HF reception with most wideband software defined radio receivers. Read more
Amazing TinySA Spectrum Analyzer
You will find the new TinySA spectrum analyzer very useful to light to moderate RF work, at a price that’s hard to beat. Check it out. Read more
Reduce ADC Overload from Active Loop on HF
Some front end filtering helps you use wideband loops with wideband SDR receivers on HF while holding overload from nearby broadcasters at bay. Read more
SDR Receiver Front End Designs
If you take a close look, you may find that each of your SDR receiver front end designs is quite different. You need to learn the differences to get best performance from your radios. Read more
Medium Wave Filtering with RSPduo
Your wideband SDR receiver can be crippled by strong local broadcast signals. Medium wave filtering can provide the solution. Either a bandstop or high pass filter does the trick. Read more
NanoVNA Vector Network Analyzer – Neat Tool
So, what the heck is my NanoVNA vector network analyzer? Turns out it’s a pretty useful piece of test equipment, cheap too. Read more
Wideband Rejection Filtering for MW Overload
A wideband rejection filter may be used to prevent medium wave overload while still keeping the wideband nature of your receiving system intact. Learn more. Read more