HT008: portable RF signal generator with MAX2871 + GD32F303, 23.5MHz–6000MHz.
High resolution: 78Hz below 46MHz; low phase noise -111dBc at 3GHz/100KHz offset. Dual-channel output: CH1 4-level amplitude, CH2 11-level amplitude.
Two modes: fixed frequency (button control) and sweep (custom start/stop, step, interval). Serial 115200 8N1, SCPI-compatible, V5.0.4.
