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
Tag: hamradio
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
Medium Wave Overload – Good and Bad News
Strong local broadcasters can create medium wave overload which causes problems for shortwave reception on higher frequencies. Read more
SDR Antenna Patch Bay
Here’s a neat little project for those of you who like using a 3D printer to compliment your radio hobby. It’s an SDR antenna patch bay. Read more
Dual Antenna Spatial Filtering Really Works
Enjoy RSPduo Dual Channel Receiver
Time for me to enjoy the RSPduo dual channel receiver, especially with wideband loop antennas and diversity reception here in western Canada. Let my journey begin! Read more
My Life Through Solar Cycles
As I approach 70, it’s time to look back at my radio life through solar cycles. I have enjoyed my hobby through five cycles, and hope to get a bit of joy from the sixth. Read more
Understanding PCB Flatness – Essential for Milling
With a height map, your CNC should easily compensate depth of cut for variations in PCB flatness. Take a look at how this works. Read more
Arrange SDR Receivers – New Radio Shack Ideas
At some point, you may want to arrange SDR receivers for easy antenna switching. Here’s how I accomplished this with my SDR radios and active antenna controllers. Read more