# CX22OP — full text > The complete written content of https://cx22op.par2labs.com, as Markdown, for AI assistants and answer engines. CX22OP is a product of PAR2 LABS (https://par2labs.com). The one-line-per-page index is at https://cx22op.par2labs.com/llms.txt. Generated from the same records the pages render, on 2026-09-22. Images are described, not linked. ## In short **Is it worth turning the radio on?** An offline-first console for radio amateurs: propagation measured at your own grid, a logbook that needs no signal, and a straight answer to whether it's you or the Sun. #### What it solves - You call CQ, hear nothing, and start doubting the antenna. → NOAA's measured D-layer absorption, sampled at your grid, names the bands the Sun is eating. - Propagation read off a global average, not off your square. → Live WSPR reports at your grid, with what is measured kept apart from what is forecast. - A summit, a park, no signal, and a logbook that needs one. → A logbook that works offline with no account, and counts your countries as you go. #### Why it is different - **Free No account, no catch** — Your callsign and grid stay on your device. - **Measured Not just modelled** — Observations and forecasts, side by side and labelled. - **Offline Installs anywhere** — An app on any device, and it keeps working with no network. - **CW A Morse room that answers** — A practice partner at three levels, and public rooms to key in. Built for: Operators deciding whether to key up, Park and summit activators, CW learners, The shack display. ## The product ### CX22OP https://cx22op.par2labs.com/ Amateur Radio Console · Free · offline-first · Live · v1.0 An offline-first operations console for radio amateurs — measured propagation, a logbook that works with no signal, a CW room that answers back, and a straight answer to the oldest question on HF: is it me, or is it the Sun? Is it worth turning the radio on? CX22OP answers the question every operator asks before keying up: is the band open, from here, right now. It separates what is measured from what is modelled — live WSPR reception reports and NOAA's D-layer absorption map, sampled at your own grid, against the forecast — so you can tell an observation from a prediction, and a dead antenna from an eaten band. Around that sit a logbook that works with no network and no account and counts your countries and states as you go, spots flagged against your own log, a Morse room with a practice partner at three levels and public rooms where operators key to each other, satellite passes computed for your square, a mutual-privilege overlay with a one-field frequency check, a watch that tells you when a callsign you are waiting for turns up, and a chrome-free shack display for the screen across the room. It installs as an app on any device, keeps your callsign and grid on that device, and costs nothing. Free, and free of accounts. Your callsign, grid and log stay in the browser's own storage on your device — export ADIF whenever you want a copy elsewhere. Open CX22OP: https://cx.par2labs.com — It runs at cx.par2labs.com — free, no account, and installable from the browser. *Screen — 01 — Ops. Signals other people are hearing right now, the operators calling from parks, and a log you can fill without leaving the screen. Captured from the running console.* *Screens — Every screen, and what you do on it.* #### Three answers nothing else gives you. - **Is it me, or is it the Sun?** — You call CQ, hear nothing, and start doubting the antenna. NOAA publishes a measured map of the highest frequency the D-layer is absorbing right now — CX22OP samples it at your own square and names the bands being eaten, in one line on the Conditions screen. When the verdict's own band is on the list, it says so: weak signals there are the Sun, not your station. Foot: NOAA D-RAP · sampled on-device · refreshed every 10 min Alt: Editorial illustration of radio waves absorbed in the ionosphere's D-layer - **A wall screen with nothing behind it to die.** — One tap turns the console into a chrome-free display for the screen across the room: UTC clock, the day/night terminator, live indices, which IBP beacon is keying this second, and your next satellite pass. It is the same offline-first app — no private backend, nothing to run, nothing that can be shut down and brick it. Foot: cx.par2labs.com/kiosk · screen wake-lock · Esc returns Alt: A dark radio shack with a wall display showing a glowing world map and clock - **The join nobody else can make.** — Every spot on The Skip is checked against your own logbook — a country you have never reached, a grid square you have never worked, a new callsign, a new band — with a quiet chip on the row. Both datasets already live on your device, so the check needs no upload, no account and no network. Web loggers cannot do this without taking your log; CX22OP does it without your log ever leaving. Foot: on-device join · nothing uploaded · 'new' means new to your log Alt: A paper radio logbook beside a tablet showing a gridded world map #### Features - 01 · **Ops** — Shows what is happening on the bands right now, and logs a contact without leaving the page. Chips: Live map, Quick log, One screen Does: - Watch the map — every curve is a signal a receiver somewhere actually heard in the last few minutes. - Press L, type a callsign, press Enter. The contact is in your log. - Click any marker to see who it is, how far away they are, and which way to point. - Read today at a glance: contacts logged, stations on the air, and your next satellite pass. - 02 · **Conditions** — Answers the question you ask before every session: is it worth switching the radio on right now? Chips: Plain verdict, Measured vs forecast, Grey line Does: - Read the verdict in one line, with the band carrying best from your own location. - Compare what people really heard in the last hour against what the forecast predicts — the screen keeps them apart. - Find out when the Sun is swallowing your band, so you stop blaming your antenna. - Catch the next sunrise and sunset window, when the low bands suddenly reach much further. - 03 · **The Skip** — Draws where signals are landing worldwide this minute, and marks the stations you have never worked. Chips: Live paths, Operators on air, Checked against your log Does: - Follow real reception reports as they arrive, each one a path the sky actually carried. - Read the chip beside an operator before you call — new country, new grid, new callsign, or a quiet 'worked'. - Narrow the map to one band and read the distance and bearing from your own antenna. - Zoom and drag the map to your own part of the world, then click a row to isolate that single path. - 04 · **Logbook** — Logs your contacts on your own device, and needs neither a signal nor a sign-in to do it. Chips: Works offline, No account, Counts countries Does: - Add a contact in seconds — band and mode carry over from the last one, so a run changes one field. - Watch your country and state counts climb as you log; the app works the country out from the callsign itself. - Bring in a log from any other program, and take yours out again whenever you want it elsewhere. - Keep working in a dead spot — nothing about saving a contact touches the network. - 05 · **Satellites** — Tells you when the amateur satellites fly over your location, and where to point when they do. Chips: Passes over you, Sky chart, Calendar reminder Does: - Read the next passes for your square, with the time each one rises and sets. - Follow the pass across the sky chart — the centre is straight overhead, and each dot is a minute. - Save a pass to your own calendar and get a reminder five minutes before it starts. - Check how fresh the orbit data is before you trust a time; the screen says so instead of hiding it. - 06 · **Footprint** — Shows where a station is really getting out, drawn from the receivers that decoded it. Chips: Who heard you, Real distances, Shareable link Does: - Type any callsign and see every receiver that picked it up. - Read how far each report travelled, and on which band. - Trace your own callsign to find out where you reached last night. - Send the result to a friend — the callsign sits in the address, so the link opens the same picture. - 07 · **Privileges** — Answers where two licences can legally meet — and whether you may use one exact frequency. Chips: May I transmit here?, Two licences, Sourced Does: - Type a frequency and get a straight yes or no for your licence, with the power limit that applies. - Pick your country and the other operator's, and read the bands you both hold. - See what already uses that spot: beacon slots to keep clear of, and the frequencies people gather on by habit. - Follow the link on any record to the regulator's own document — this is a well-checked summary, not the law. - 08 · **Nets** — Lists the scheduled on-air meet-ups, and tells you which ones are running this minute. Chips: Running now, Your clock, Every row checked Does: - See what is on the air now, in your own clock as well as UTC. - Read the frequency, mode and language before you tune in. - Check whether the path from your station is even workable before you go looking for it. - Put a net in your calendar as a repeating reminder, and follow the link it was checked against. - 09 · **The Bench** — Does the workshop maths — antenna lengths, cable loss, real radiated power — with no network at all. Chips: Antenna maths, Real radiated power, Fully offline Does: - Cut a dipole or a vertical to the right length for your band, with the formula printed beside the answer. - Turn transmitter power, cable loss and antenna gain into the figure your licence limit actually means. - Work out the distance and bearing between two locations, in a field, with the phone in aeroplane mode. - Learn Morse letter by letter with the trainer, at full speed from the first minute. - 10 · **Morse** — A room for practising Morse code, with a partner that answers what you actually send. Chips: Practice partner, Three levels, Public rooms Does: - Key with the spacebar, type dots and dashes, or type plain words and let the room send them for you. - Work a full practice contact against a partner you set to basic, pro or expert — it slows down when you ask. - Step into a public room and key with real operators; every message clears itself after a day. - Hide the text and copy by ear, then tap a message to check what was really sent. - ·· · **Comms** — The reference for how operators actually talk, one press away while you practise. Chips: Phonetics, Q-codes, One contact, four ways Does: - Look up the phonetic alphabet, the signal report system, and the codes worth knowing. - Read the same contact written out four ways, so you know how each mode sounds before you try it. - Learn the shape every contact follows — call, answer, exchange, close — before your first one. - Keep it open beside the practice room: it slides in over the channel, and works with no signal. - 11 · **Station** — Two fields — your callsign and your location — turn every other screen into your answer. Chips: Callsign · location, Set once, Stays on device Does: - Let the app read your location once and turn it into a grid square, or type the square yourself. - Everything then follows: distances, bearings, pass times, sunrise windows, and the bands you may use. - Share four characters of your location at most — about a hundred kilometres — unless you choose otherwise. - Read the register while you are here: every feature says where its data comes from, and what was left out. - ·· · **Profile** — Your own corner of the console: how far your log has reached, alerts that watch a callsign for you, and the people using the app. Chips: Sign in, Callsign alerts, Community Does: - Sign in, then click your callsign in the top bar. That is the door — there is no menu row for it. - Watch a callsign and get told the moment a receiver hears it, or it starts calling from a park. The bell in the top bar collects every alert. - Turn on push and those alerts reach your phone as notifications, even with the app closed. - Ask for a feature, comment on one, or report a bug on the community board — or send the maintainer a private note nobody else sees. - Open the vault from here: restore points, the original files you imported, and every change your log has been through. - ·· · **Shack display** — Turns any spare screen into a wall display you can read from across the room. Chips: Wall screen, Glanceable, Nothing to shut down Does: - Leave it running for the clock, the line between day and night, and the solar numbers. - See which beacon is transmitting this second, and when your next satellite pass starts. - Tap the screen, or press Escape, to come back to the console. - Keep it for good — it is the same app as every other screen, so there is no service behind it to switch off. #### What it is for - Decide whether to turn the radio on, from your grid rather than a global average. - Blame the right thing: know in one line whether silence is your antenna or a D-layer fadeout. - Log contacts in the field — a summit, a park activation, a dead spot — with no signal and no account. - Spot the station worth calling: chips on the live spots mark what would be new to your own log. - Type any frequency and learn whether your licence covers it — and what voluntarily lives nearby. - Practise CW against a partner that sends real Morse and answers what you actually key. - Find out which receivers heard you last night, and how far the signal actually reached. - Watch a callsign and get told the moment somebody hears it, or it starts calling from a park. - Leave it running as the shack display: clock, terminator, indices, beacons, next pass. #### Specifications - **Console**: cx.par2labs.com - **Price**: Free - **Install**: PWA · Web, Android, iOS, desktop - **Storage**: On-device · no account - **Log format**: ADIF import / export - **Live sources**: wspr.live · POTA · NOAA SWPC + D-RAP + aurora · Celestrak - **Awards**: DXCC and WAS counted on-device · Big CTY, MIT licence - **Alerts**: Watch a callsign · in-app and push · account only - **Verification**: 616-check self-test gates every build Film: [Every screen, narrated](https://cx22op.par2labs.com/) (5:33) — A walk through all eleven screens of the console — station setup, conditions, the skip, logbook, satellites, footprint, privileges, nets, the bench and Morse — with what each one is for and why it works without an account or a network. #### Features — Everything it does, in plain words. https://cx22op.par2labs.com/features Thirteen screens, one job each. Read the four steps first if you are new — they take about five minutes and turn the console into a tool that answers for your station rather than the world in general. **What nothing else in the category does.** **Start here. Four steps, about five minutes.** Items: - **01 — Tell it where you are** — Open Station and type your callsign. Let the app read your location once and turn it into a grid square, or type the square yourself. Every other screen now answers for your station instead of the world in general. - **02 — Ask if it is worth switching on** — Open Conditions. It gives you a verdict in one line and names the band carrying best from where you are. It is allowed to say no, and it tells you when the Sun is the reason. - **03 — Find somebody to work** — Open The Skip. It draws the signals receivers are hearing right now and marks the operators calling from parks. A chip on each row tells you whether your logbook has ever seen them. - **04 — Log the contact** — Press L anywhere, type the callsign, press Enter. It saves to your device with or without a signal, and your country and state counts climb as you go. **Every screen, one by one.** **What it will not do.** Items: - **It never transmits** — There is no path from this app to a transmitter. It reads, calculates and logs. Keying the radio stays your job, which is also the only arrangement your licence allows. - **It does not make you sign up** — Every screen except the community board and the callsign alerts works signed out, offline, for good. An account adds things; it never unlocks the basics. - **It keeps your location yours** — Your grid square stays on your device. Where anything is shared, four characters go out, which covers about a hundred kilometres. Sharing anything finer is a switch you have to turn on yourself. - **It does not fill gaps with guesses** — When a source cannot be reached, or a band-plan record cannot be checked twice, the screen says so and shows nothing there. A wrong frequency costs you an evening at best, so absence beats invention. **Where the numbers come from.** | | | | --- | --- | | Signals being heard | wspr.live — reports from real receivers, worldwide | | Operators on the air | api.pota.app — people calling from parks right now | | The Sun, and what it is absorbing | NOAA Space Weather Prediction Center | | Satellite orbits | celestrak.org, refreshed every two hours | | Countries behind a callsign | Big CTY by Jim Reisert AD1C, MIT licence, built in | | Band plans, privileges, nets | hand-checked tables — every row carries its source and the date it was checked | | Your logbook | your device, and nowhere else | **Everything you'd use it for.** #### Architecture — How the console fits together. https://cx22op.par2labs.com/architecture What the console reads from the outside world, what it works out for your grid square, and what stays on your device — and the specification underneath it. **The specification.** #### Field Manual: Ham Radio https://cx22op.par2labs.com/what-is-ham-radio A licensed radio service, operated by civilians, that answers to no carrier and needs no network. When the towers are down and the cables are cut, it is still on the air — because it never depended on either. ##### 01 · A communications capability you are licensed to operate yourself. Amateur radio is a licensed, non-commercial radio service. The state issues you a call sign, allocates you slices of spectrum, and then largely gets out of the way. What you build on that allocation is yours to design, test and repair. Operators work each other across a street, across a country and across an ocean, on equipment they often built or modified themselves. Nothing in the chain belongs to a service provider. There is no subscription to lapse, no exchange to fail, and no operator to route around you. Points: - **Licensed** — Spectrum granted to an individual, not a company. - **Non-commercial** — No traffic for hire. Experimentation, training, service. - **Self-supported** — Your antenna, your power, your maintenance. - **Worldwide** — One licence, a global operating community. ##### 02 · There is no gatekeeping — only a syllabus. Anyone with an interest in radio, electronics or communications can qualify. Age is not a barrier at either end. What is required is a licence, and the licence is earned by examination rather than granted by connection. Steps: - D: Radio theory, regulations and operating practice. The material is public and the exam is set against it — no course is mandatory, though a club will get you there faster. - D: Local clubs run classes, lend equipment, and put a first signal on the air under supervision. Most operators trace their start to one. - D: Nets, field days and contests are where operating is actually learned. Listening is a skill; so is being brief. - D: Pass, pay the fee, receive a call sign. From that point the allocation is yours to operate. ##### 03 · From application to call sign. In India the Wireless Planning and Coordination wing of the Department of Telecommunications issues amateur licences. The whole process runs through the government's Saral Sanchar portal. Steps: - D: The official DoT portal. Register, and select the Amateur Radio Service. - D: Radio theory and regulations, taken at a scheduled session. - D: Pass the exam, complete police verification, and pay the prescribed fee. - D: The licence is issued with a call sign that identifies you on the air, anywhere in the world. Link: **Saral Sanchar — Department of Telecommunications** (https://eservices.dot.gov.in/saral-sanchar) Grades: - **Foundation** G: Restricted D: The entry grade. A working licence with a reduced privilege set — enough to get on the air and learn on real spectrum. - **Intermediate** G: General D: The standard grade. Wider band access and higher permitted power; where most operators settle. - **Advanced** G: HAREC D: Harmonised to the European certificate, which makes reciprocal operation abroad far simpler. ##### 04 · The spectrum you are handed. Each band behaves differently, and the difference is physics rather than preference. The low bands carry at night and over ground; the high bands need an ionosphere in the right mood and then reach the other side of the planet on a few watts. VHF and above are line of sight, repeaters and satellites. Table: | Band | Frequency | Modes | Typical use | | --- | --- | --- | --- | | 160 m | 1.810 – 2.000 MHz | CW · SSB · Digital | Long-haul at night, regional groundwave | | 80 m | 3.500 – 4.000 MHz | CW · SSB · Digital | DX after dark, rag chews, nets | | 40 m | 7.000 – 7.200 MHz | CW · SSB · Digital | DX, contests, the reliable workhorse | | 20 m | 14.000 – 14.350 MHz | CW · SSB · Digital | Worldwide DX, open in daylight | | 15 m | 21.000 – 21.450 MHz | CW · SSB · Digital | DX when the solar flux is up | | 10 m | 28.000 – 29.700 MHz | CW · SSB · FM · Digital | Sporadic-E, long DX on low power | | 6 m | 50.000 – 54.000 MHz | FM · Digital | The magic band — local, then suddenly not | | 2 m | 144.000 – 146.000 MHz | FM · Digital | Local work, repeaters, emergency nets | | 70 cm | 430.000 – 440.000 MHz | FM · Digital | Local work, repeaters, data links | | 23 cm | 1240 – 1300 MHz | FM · Digital | Weak signal, experimentation | | Microwave | Above 1 GHz | Various | Experimentation, EME, satellite | *Allocations follow WPC / DoT and are subject to change. Always operate against the current notification, not against a summary — this one included.* ##### 05 · The network that is still up when the networks are down. Commercial communications share a failure mode: they depend on infrastructure that is itself in the disaster. Towers lose power, backhaul is cut, exchanges flood, and the network that worked yesterday is a dead handset today. Amateur radio has none of those dependencies. An operator with a battery, a wire and a licence is a working link, and a hundred of them are a working network — one that has carried traffic out of floods, cyclones and earthquakes when nothing else could. Hams serve when others cannot. Points: - **No infrastructure** — Battery, antenna, operator. That is the whole chain. - **Trained volunteers** — Nets and field days are the drill; the emergency is the exercise. - **Interoperable** — Works alongside disaster management authorities, NGOs and local units. - **Proven** — Search and rescue, relief coordination, medical traffic, welfare messages. ##### Get licensed. Then get on the air. CX22OP is the console we built for the part that comes after the licence — knowing whether the band is open, logging where there is no signal, and finding out where your signal actually landed. ##### FAQ **Q: What is ham radio?** A: Ham radio, or amateur radio, is a licensed non-commercial radio service. A national regulator issues an individual operator a call sign and access to allocated slices of spectrum, which they may use for communication, experimentation, training and public service — but not for commercial traffic. Operators supply and maintain their own equipment, so the service does not depend on any carrier or network. **Q: How do I get an amateur radio licence in India?** A: Apply through the Department of Telecommunications' Saral Sanchar portal and select the Amateur Radio Service. Sit the online examination covering radio theory, regulations and operating practice, complete police verification, and pay the prescribed fee. On success the WPC wing issues your licence together with a call sign. **Q: What licence grades exist in India?** A: Three. Restricted grade is the entry level with a reduced privilege set. General grade is the standard licence, with wider band access and higher permitted power. HAREC is harmonised with the European certificate, which simplifies reciprocal operation abroad. **Q: Which frequency bands can Indian hams use?** A: The HF allocations run 160 m (1.810–2.000 MHz), 80 m (3.500–4.000 MHz), 40 m (7.000–7.200 MHz), 20 m (14.000–14.350 MHz), 15 m (21.000–21.450 MHz) and 10 m (28.000–29.700 MHz). Above them sit 6 m (50–54 MHz), 2 m (144–146 MHz), 70 cm (430–440 MHz), 23 cm (1240–1300 MHz) and the microwave bands above 1 GHz. Allocations follow WPC / DoT notifications and change from time to time. **Q: Why is ham radio used in emergencies?** A: Because it carries no infrastructure dependency. Mobile and landline networks fail in a disaster precisely because the towers, power and backhaul are inside it. An amateur operator with a battery, an antenna and a licence is a complete communications link, and a network of them can carry search-and-rescue, relief coordination, medical and welfare traffic when nothing else is working. **Q: Do I need a licence to transmit?** A: Yes. Receiving is unrestricted, but transmitting on amateur allocations without a licence is an offence. The examination exists to establish that an operator understands the regulations and will not interfere with other services. ## Who makes it PAR2 LABS PVT LTD — Technology . AI . Strategy . Films. We engineer world-class technology and AI products across intelligence, infrastructure, hardware, and story — designed to make sense, deployed to make a difference. Studio: https://par2labs.com · Contact: ceo@par2labs.com · +91 90591 69238