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@@ -2,14 +2,15 @@ |
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## 1. Mission |
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Create a Go-based UKW/FM stereo transmitter with RDS that can run on standard Linux systems and, where feasible, on Raspberry Pi / SBC-class hardware. |
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Create a Go-based UKW/FM stereo transmitter with RDS that can run on Windows, Linux, and, where feasible, on Raspberry Pi / SBC-class hardware. |
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Primary design goals: |
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- reliable CPU implementation first |
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- Windows-first bring-up and development ergonomics |
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- clean architecture for real-time DSP |
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- optional CUDA path for selected heavy DSP blocks |
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- practical control interfaces for audio, RDS, frequency, and TX settings |
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- portability across x86_64 Linux and ARM Linux |
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- portability across Windows x86_64, Linux x86_64, and ARM Linux |
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--- |
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@@ -23,7 +24,8 @@ Primary design goals: |
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### Technical |
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- Go as the primary implementation language. |
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- Linux is the primary target. |
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- Windows is the initial bring-up target. |
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- Cross-platform portability must be preserved from day one. |
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- Raspberry Pi / ARM compatibility must be preserved for the CPU path. |
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- CUDA is optional and must be runtime-detectable, never mandatory. |
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@@ -87,7 +89,11 @@ Tasks: |
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- SDR IQ output |
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- direct MPX/composite output |
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- both |
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- freeze first backend direction: |
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- SoapySDR as preferred abstraction for hardware flexibility |
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- optional vendor-native backend later if required for performance/features |
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- shortlist hardware targets: |
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- Windows PC + SDR |
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- Linux PC + SDR |
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- Raspberry Pi 4/5 + SDR |
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- other ARM SBC |
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@@ -162,7 +168,7 @@ Tasks: |
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Acceptance criteria: |
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- generated composite can be decoded by reference analysis tools |
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- RDS PS and RadioText can be recovered reliably from recorded output |
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- CPU use acceptable on x86 Linux for real-time operation |
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- CPU use acceptable on Windows x86 and Linux x86 for real-time operation |
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--- |
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@@ -177,7 +183,7 @@ Deliverables: |
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- underrun/overrun telemetry |
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Backend options to evaluate: |
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1. **SoapySDR backend** for broad SDR support |
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1. **SoapySDR backend** as the preferred first backend for broad SDR support and flexibility |
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2. **Vendor-native backend** for selected hardware where latency/control is better |
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3. **Composite audio backend** for hardware exciters that accept MPX input |
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@@ -319,7 +325,7 @@ Be careful with naming: |
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## 7. Recommended MVP definition |
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Ship this first: |
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- Linux CLI daemon in Go |
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- Windows-first CLI daemon in Go, kept cross-platform from the start |
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- CPU-only path |
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- stereo MPX generation |
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- basic RDS (PS + RT + PI + PTY) |
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