RST Scope vs Stamp Stack

This is an app for amateur radio operators with a narrow band of audio frequency, spectrum scope & waterfall display. You can get a rich display by microphone inputting the speaker output of a radio that does not have a spectrum scope or waterfall function. The FFT allows you to distinguish between the dot and dash of Morse code. [function] 1. Ability to change the speed of the waterfall 2. Ability to adjust the level of audio input 3. Function to switch the display band between wide and narrow 4. Display pause function (pause / cancel by touching the screen) 5. Function to switch the cross hatch ON / OFF by longTap 6. Frequency resolution is fixed at 40Hz. 7. Function to switch the USB/LSB by Left/Right Swipe 8.Recording/Playback function of Input Sound RST Scope(Free) https://www.youtube.com/watch?v=1s9RvOFp52g

Keep your NFA collection organized with Stamp Stack - the secure, private way to track your Form 4 approvals and tax stamps. Key Features: - Scan Form 4 documents with automatic text extraction - Track pending submissions and approved stamps - Monitor wait times and approval dates - Organize items by type: suppressors, SBRs, SBS, AOW, machine guns, and more - Manage NFA trusts and associated items - Secure cloud backup with end-to-end encryption - Biometric lock (Face ID / Touch ID) and PIN protection - Import documents directly from email Your Data, Your Control: All data is encrypted on your device before syncing to the cloud. Only you can access your information - we can't see your items, documents, or personal details. Perfect for: - Suppressor owners tracking wait times - Collectors managing multiple NFA items - Trust owners organizing shared items - Anyone waiting on Form 4 approval