Meteor Speed Test vs PhantomGram

- Testing speed for mobile and WiFi internet connections Meteor is an ad-free internet speed test tool that can be used to check the speed of your mobile and wireless connection (on 3G, 4G LTE or 5G), as well as for WiFi speed testing. - Test connection speed and app performance Meteor’s unique test allows you to see how your internet connection and download speed will affect the performance of your favorite mobile apps. You can test app performance for up to six mobile apps at a time, from 27 of the most popular apps and games around the world. - Test connection speed and app performance Meteor’s unique test allows you to see how your internet connection will affect the performance of your favorite mobile apps and games. You can test up to six mobile apps at a time, from 27 of the most popular ones around the world. - Easy to use speed test One simple test gives you easy-to-understand results for download speed, upload speed and ping time. Then, simply choose the apps you use most to see how they are impacted by your current network connection - no more trying to work out whether your network service provider is delivering the 5G connection you need. - Historic internet speed test performance View all your internet speed tests by location on a map and sort them by best and worst performance. See a timeline of your tests in the history tab and review the stats for each speed test to monitor how your network experience has changed over time. - Connectivity coverage map Always know where to find the best coverage with Meteor’s network coverage map. The map shows signal strength down to street level using signal data from local users. With network stats on local network operators, you can check coverage ahead of a trip, check the internet and signal strength in remote areas, compare your network to other providers in the area, arrange the best local SIM. - Improving network connection Meteor is completely free to use and contains no advertising. We provide an independent source of truth in mobile network experience: A data source that shows how users experience mobile network speeds, gaming, video, and voice services worldwide. To do this, we collect anonymised data on the signal strength, network, location, and other device sensors. You can stop this at any time in the settings section. We share this data with network operators globally and others in the industry to drive better connectivity for all. Do Not Sell My Info: https://www.opensignal.com/ccpa

PhantomGram — Paint the Airwaves Spectrum painting for amateur radio. Encode any image as audio and transmit it through your radio — the picture appears directly on the receiver's SDR waterfall display. No special decoder needed at the other end. The image IS the spectrum. HOW IT WORKS Spectrum painting exploits the way SDR waterfall displays work. A waterfall shows radio frequency on one axis and time on the other, with colour representing signal strength. PhantomGram converts each row of your image into a carefully crafted audio signal where pixel brightness maps to tone amplitude and pixel position maps to frequency. When transmitted via SSB radio, the receiver's waterfall reassembles the picture automatically. TRANSMIT Select an image from your photo library or camera, or use the built-in test patterns (bars, gradient, checkerboard, concentric circles). Choose a resolution preset — from QUICK (80×64, under 4 seconds) to SLOW (640×256, maximum detail). Adjust the frequency range with the dual-knob slider. The image is encoded automatically, a TX preview shows the picture as the receiver's waterfall will draw it, and the status line shows the send time. Tap SEND to transmit, and watch the cursor and timer follow the image down. RECEIVE Tap START and point your iPhone's microphone at a radio speaker or connect via audio cable. The live FFT spectrum shows incoming signal energy across the frequency band. Below it, a continuous waterfall display reconstructs the image in real time as it arrives. When the sender's header tone is heard, the status line says so. Adjust gain to brighten weak signals. Save decoded images to the built-in log for later viewing and sharing. FEATURES • Encode images as spectrum painting audio via inverse FFT with random phase • Adjustable frequency range (0–10,000 Hz) with sensible defaults for SSB radio (200–2,800 Hz) • Four resolution presets: QUICK, STANDARD, DETAIL, SLOW • Real-time receive decode with live FFT spectrum display • SDR-style waterfall colourmap (black → blue → cyan → green → yellow → orange → red) • Optional header tone, sent before the image and detected on receive • Status lines for encoding, sending and receiving • Received image log with save and share • Phosphor CRT aesthetic — green or amber display themes • Zero external dependencies — pure Swift and Accelerate framework DSP • iPhone speaker and microphone — no additional hardware required TYPICAL USE Connect your iPhone's headphone output to your radio's microphone input (or simply hold the phone near the mic). Tune your radio to an appropriate frequency, key the transmitter, and tap SEND. Anyone monitoring that frequency with an SDR receiver will see your image appear on their waterfall display. For receiving, tune your radio to the transmission frequency, connect the radio's speaker output to your iPhone (or use acoustic coupling), and tap START. FREQUENCY GUIDANCE • STANDARD (200–2,800 Hz) — fits within normal SSB audio passband • NARROW (500–2,500 Hz) — safe for most radio mic inputs • WIDE (200–3,500 Hz) — only if your radio passes full audio bandwidth • SSTV-FIT (1,500–2,300 Hz) — coexists with SSTV activity Part of the Phosphor suite, sister app to PhosphorRTTY and PhosphorCW, amongst others. REMEMBER: TRANSMIT ON LICENSED FREQUENCIES ONLY.