⚡ Foundations of Electricity
Charge, current, voltage, resistance and the three components every radio is built from
Free · No account · Works offline once loaded
Pass the ASOC exam and get your callsign
The complete syllabus for the Indian Amateur Station Operator's Certificate (Restricted) — from what a volt is, to the exact wording of the licence conditions you will be examined on. Written for someone who has never studied electronics.
- 36lessons
- 470practice questions
- 21live calculators
- ~8 hof reading
Where you left off
Why this exists
Most of what I know about radio arrived years later than it needed to. It came off the air, from club evenings, from people who were patient with me on a repeater — long after the examination was behind me. Very little of it was hard. It was just nowhere I could have found it when I was starting.
This course is an attempt to move some of that forward. It follows the ASOC syllabus clause by clause, and it tries to explain the mechanism behind each answer rather than only naming it, because an answer you understand survives the examination hall and an answer you memorised does not survive the first person who asks you why.
It is also written against the rules as they stand today. The Telecommunications (Amateur Services) Rules, 2024 replaced the 1978 Rules in October 2024, while the published syllabus still names the older ones. Both are set out here, and every point where the answer has moved is marked.
— Dinakar, VU3EXJ, Bengaluru
Every answer explained
470 questions, each with the reasoning — plus a note wherever an answer is commonly misremembered or a figure has changed.
Things you can actually turn
Ohm’s law solver, resistor colour decoder, resonance lab, rectifier waveforms, superhet image calculator, skip-distance visualiser.
Marked to the real pass rule
Timed one-hour mock exams scored the way WPC scores them: 40% in each section and 50% overall, or you have not passed.
It remembers what you got wrong
A revision queue built from your own mistakes, in this browser. No sign-up, no email, nothing uploaded.
Before any of the theory
This is the whole chain
Everything in Section A is one of these six boxes explained properly. If you are not sure where a lesson fits, come back here — each block goes to the lesson that covers it.
- Power Mains or battery, turned into steady DC Lesson 11
- Transmitter An oscillator makes the carrier; a PA makes it strong Lesson 18
- Feeder Coax carrying the power up to the roof Lesson 24
- Aerial Turns power in a wire into a wave in space Lesson 22
- Propagation Ground wave, sky wave or line of sight Lesson 21
- Receiver Picks one signal out of thousands and recovers the sound Lesson 16
The other half of the course, Section B, is the rulebook that says which frequencies, how much power and which modes any of this may use.
Section A — Radio Theory and Practice
Half the paper. Starts from charge and current and assumes nothing.
〜 Alternating Current
Sine waves, reactance, resonance and turning the mains into clean DC
🧪 Semiconductors and Circuits
Diodes, transistors, amplifiers and oscillators - where the signal is made
📻 Receivers and Transmitters
The superhet, what makes a receiver good, and how a signal leaves the shack
🌍 Radio Wave Propagation
The spectrum, the ionosphere, skip distance and why the band closes at sunset
📡 Aerials and Feeders
How an antenna radiates, the common types, and getting power into it
📏 Frequency Measurement
Wavemeters, counters and the licence condition that makes them compulsory
Section B — Radio Regulations
The other half, and the half people fail on. It is also the easier half to score in, because the answers are written down in a rulebook rather than derived.
🇮🇳 Indian Regulations
The rules that actually govern your station - including the 2024 ones nobody teaches
🌐 ITU Radio Regulations
Band nomenclature, emission designators, identification, interference and distress
🗣 Operating Practice
Phonetics, the figure code, Q-codes, abbreviations and time signals
🎓 Sitting the Exam
Applying, the paper itself, and what happens between passing and transmitting
On the plan, not yet built
Should these lessons have video too?
Thirty-six lessons is the better part of eight hours of footage, and it is only worth recording if people would actually watch it rather than read. One tap tells me. Nothing else is asked of you.
The honest small print
- It is free, and there is nothing to sign up for.
- No account, no email wall, no paid tier hiding the second half.
- Your progress lives in this browser only.
- Nothing is uploaded. Clear your site data, or open the course on a different device, and it starts fresh. That is the price of having no account.
- It is not an official WPC publication.
- It is written by a licensed operator against the published syllabus and the current rules. Fees, portals and band edges do change — confirm anything that costs money on Saral Sanchar before you pay.
- Found a mistake?
- Say so — the feedback box at the foot of every lesson reports which page it came from. A correction from a reader is worth more than a compliment.