TerayTech Blog

Minimal notes on engineering, Mixed-Signal & RF, Antenna, and experiments.

Power Amplifier Non-Linearity Affect on Digital Modulation

Investigation of the Impact of Highly Nonlinear RF Power Amplifiers on High-Order Digital Modulation Signals

October 6, 2025 · 8 min · TerayTech

Observing 24g ISM Band Radar FMCW Signal With Real-Time Spectrum Analyzer

Spectrum, RT Spectrum, Power vs Time Measurements

October 6, 2025 · 1 min · TerayTech

Indie Radar Transceiver Die Shots

TRX_120_067 die shots and annotations

October 5, 2025 · 1 min · TerayTech

What's the Video Resolution & Bitrate of DVB-S/S2 in Amateur Radio

An analytical report comparing the standard DVB-S2 signal parameters with the unconventional low symbol rates commonly used in HAM DATV.

October 4, 2025 · 6 min · TerayTech

TG5032CFN Phase Noise Measurements

A phase noise measurement of TG5032CFN on my mini STM32 GPSDO

October 4, 2025 · 2 min · TerayTech

GME Repeater Teardown

A teardown of an analog repeater built with GME TX3600T & TX3800T

October 2, 2025 · 1 min · TerayTech

Simoco SRM9000 Mobile Radio Teardown

A picture collection of SRM9000 Teardown

October 1, 2025 · 1 min · TerayTech

An Unknown Issue Motorola DP4801 UHF Radio

A teardown reveals a broken digital two-way radio built around a strong RF front-end, a custom Motorola baseband with TI processing, and a semi-reflective display — a compact design that blends rugged hardware with complex digital logic.

September 30, 2025 · 5 min · TerayTech

Ra30h4452ma Inside the Package

Look inside of the RA30H4452MA RF power amplifier module

September 30, 2025 · 1 min · TerayTech

ECRAFT HDMI DVB-T Modulator

A budget-friendly DVB-T modulator with flexible settings and integrated baseband/RF processing—perfect for hands-on HAM TV experiments.

September 22, 2025 · 5 min · TerayTech