Ham Radio 101: The RF Engineering Behind the Signals
A starter collection for anyone who wants to understand what the radio, feedline, antenna and ionosphere are actually doing—without weakening the engineering.
Plain language is the first layer, not the last word
You do not need an electronics degree or a licence-exam vocabulary to begin. Each article starts with the physical idea, defines the RF terms it needs, connects them to a real station example and introduces equations only after the quantities and units make sense.
The limits stay visible. A shortcut is useful only when you know where it stops working. That is why matching is kept separate from efficiency, antenna length is separated from electrical behaviour, and a convenient meter reading is never asked to prove more than it measured.
Read in order for a guided path, or jump directly to the question that brought you here.
Build the picture one current path at a time
These articles form the starting set. Together they connect waves, current, antennas, feedlines, matching, propagation, loss and station safety.
Begin with waves and current
Learn the scale of a radio wave and why changing current and charge can produce radiation.
Understand antenna behaviour
Move from the current on the conductor to polarization, gain, pattern, resonance and DC continuity.
Follow power through feedlines and matching
Learn what the transmitter sees, where current returns and why a match does not certify low loss.
Connect the station to the sky—and protect it
Finish the starter set with radio weather and a bounded introduction to thunderstorm risk.
The classroom is still growing
These beginner lessons are part of the planned RF.Guru 101 path. They remain visible so you can see where the course is heading, but they are not links yet. Each will open when its lesson is complete.
RF foundations
Antenna behaviour
Baluns, UNUNs, chokes and isolation
Feedlines and station entry
Propagation you can use
Transmitters and power amplifiers
Receive antennas
Measurement and station basics
Stay with the main thread before following equations, standards or the deeper related-reading links.
Include the radiator, return path, feedline, mast, ground, radio and nearby conductors.
Write down the quantity, units, reference plane and conditions before deciding what a result proves.
A starting set that can keep growing
This collection is the front door, not the ceiling. New beginner articles can be added as a concept earns a clear place in the learning path, while The Guru’s Incredible Lab remains the complete engineering library.
Mini-FAQ
- What does “101” mean on RF.Guru? — It means written for anyone, including a reader with no RF or electronics background. It does not mean technically weakened.
- Must I read every article in order? — No. The order builds a useful foundation, but each article also answers a practical question on its own.
- Do I need mathematics to begin? — No. Each article starts with the physical idea and defines its quantities before introducing an equation.
- Are these licence-exam notes? — No. They explain the engineering behind a station. Licensing and operating rules still depend on your jurisdiction.
- Where are the advanced articles? — The complete collection remains in The Guru’s Incredible Lab.