We listen to our radios in a broadband RFI spectrum conducted and radiated all around us. Read more
Tag: hamr
RFI Transmission Paths – How Does It Get Into My Receiver?
Your house and neighborhood are full of RFI transmission paths. It’s time to understand these better as we fight the effects of interference on our radio hobbies. Read more
LTSpice FFT Spectrum Analyzer for Amplifiers
You can use an LTSpice FFT to check expected performance from an amplifier, and compare simulated results to the data sheet specifications. Read more
Surface Mount Toner Transfer Experiments
My surface mount toner transfer experiments led me to move from using magazine pages to heavier photo paper stock to get better results. Take a look! Read more
Wideband Loop Base Amplifier Feeds Receiver
We complete the electronics requirements for our loop antenna design with a wideband loop base amplifier to match the transmission line to a receiver. Read more
Surface Mount PCB Artwork – Using Inkscape
Surface mount PCB artwork requires you to print designs smaller than a grain of rice. Is this even possible with my home laser printer? Read more
Zotero Technical Library – Getting Organized
Finding information is important. Build a sophisticated Zotero Technical Library on your PC to organized your digital assets. Read more
Wideband Loop Transmission Line Choices
With a little ingenuity, you can select either coaxial or network cable for your wideband loop transmission line. Either will work, but I am going with twisted pair. Read more
Is It Time to Rename Amateur Radio?
Bob gave me a new Amateur Radio mug for Christmas. It falls short of trying to rename amateur radio, but does a great job of re-branding. Read more
Wideband Loop Antenna Head End – TIA In Action
Implementing a wideband loop antenna head end appears fairly simple with a transimpedance amplifier. But there are some tradeoffs between gain, stability and bandwidth you need to make. Read more