What were you doing in March 1978? I was reading my favorite Ham Radio magazine issue of all time. Read more
Category: Ham Radio
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
Third Party PCB Fabrication – My OSH Park Experience
My first experience with third party PCB fabrication was painless, reasonably priced and relatively fast. Oh, and they are much better than anything I could have done myself. 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
LTSpice Digital Breadboard – Learning Accelerator
Download your free LTSpice digital breadboard and have some fun learning electronics. Test and understand your ideas before you actually build something. Read more
Remembering Ham Radio Magazines
Ham radio magazines have been part of my life for fifty years. The best of them all was actually called “Ham Radio Magazine”. Remember it? Read more
Loop Amplifier Input Impedance – Keeping It Low
Popular circuits do a pretty good job of providing low loop amplifier input impedance. This means you can use these to keep a loop in short-circuit wideband mode quite easily. Read more
Dipole Versus Wideband Magnetic Loop Performance
Dipole versus wideband magnetic loop performance simulations show that a good active loop will stack up fairly well on the HF ham bands. Read more
Magnetic Loop Magic Continues – Wideband Next
Looking back, I have had a lot of fun with magnetic loop magic. Next up, I will try my hand at wideband active loops for diversity reception. Read more