Signal Lab is a 10-part tutorial series on SigLab, GopherTrunk’s standalone signal-analysis workbench — the tool that runs entirely offline against a recorded IQ capture, no SDR and no daemon required. We start from your very first replay and climb, one post at a time, to lab-grade modulation measurement, blind signal identification, P25 PDU dissection, and demodulator regression benchmarking.

Every post is built for three ways of reading: a TL;DR + cheat-sheet up top for skimmers, bold section headers, tables, and diagrams for the medium read, and full prose with real command output for the deep read. You’ll meet Ada, a brand-new operator working her first capture, and Reese, the RF veteran who explains why each number matters.

This is one leg of the Lab Bench trilogy — three concurrent series on GopherTrunk’s analysis consoles: Signal Lab (this one), RF Scope, and Crypto Lab. A single mystery signal — Mercury — runs through all three.

New to radio first? Start with the Learn RF & SDR path, then come back.<ol class="post-list series-list"><li class="post-card"> <h2 class="post-card__title">Signal Lab, Part 1: Your First Capture — No Radio Required</h2> <p class="post-card__meta"> July 2, 2026 Tutorials </p><p class="post-card__desc">Signal Lab is GopherTrunk’s offline signal-analysis workbench — replay, identify, synthesize, and grade recorded IQ captures through the exact production decode pipeline with no SDR, no daemon, and no network attached.</p></li></ol><p class="blog-feed-link"> See all tutorials or subscribe via RSS. </p>