180+ complete amplifier builds — from 50W QRP to high-voltage tube monsters — with full SVG schematics and real bench math. Plus ham & CB manuals, antennas, calculators and repair guides. Written by a builder, not a copywriter.
Real-time solar & propagation data straight from NOAA. Check the bands before you key up — free, no login, every day.
All 9 main-line amplifier volumes (Vol 1–9) in one instant download — 90 complete builds. The 9 Tribute Series volumes are sold separately.
All 9 Hood's Finds linear amplifier build volumes in a single instant download. Vol 1 through Vol 9 — 90 complete amp builds from 50W QRP to high-voltage tube monsters, tube classics to GaN outlaw builds, mobile to base station. Tribute Series sold separately. All other Hood's Finds products sold separately.
Want Tribute Series too? Browse Tribute Volumes — sold individually or as a 3-volume bundle.
10 prohibition-era themed high-voltage tube builds — The Bootlegger, The Speakeasy, The Rumrunner, The Contraband, The Kingpin and more. 75W to 600W. 500V+ plate supplies.
The catalog grows based on builder requests. Tell us what you want built.
Submit a Custom RequestEvery guide works offline. Every guide is complete. Written by someone who actually builds this stuff.
Other sites give you Wikipedia. Hood's Finds gives you the bench manual.
Every build includes hand-crafted SVG schematics — readable, accurate, and printable. Not stock photos. Original technical drawings for every circuit.
51 built-in JavaScript calculators. Bias point, impedance matching, antenna cut lengths, enclosure volumes — crunch the numbers before you cut the wire.
Every guide works from CD-ROM, USB drive, or your hard drive with zero internet required. No login. No expiry. Take it to the shop, the bench, the field.
Theory, parts list, BOM, safety warnings, step-by-step construction, testing, and troubleshooting — all 11 sections in every build guide. No skipped steps. Ever.
Written by someone who actually builds this stuff. Direct language, real math, and advice from hard-won bench experience — not textbook theory rephrased.
eBay Top Rated Seller, 99.4% positive across 300+ orders, top 1% in the Ham Radio Amplifiers category. The ham radio community has voted with their wallets. Read the reviews →
The Ham Radio Linear Amp Builder's Quick Reference — transistor substitution tables, bias setup cheatsheet, common impedance values, and the 10 mistakes that kill amplifiers. Instant download. No credit card. No strings.
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The Master Bundle contains all 9 Hood's Finds linear amplifier volumes. One download. Yours forever. Works completely offline. Tribute Series sold separately.
Instant digital download · Works 100% offline · All digital sales final · Educational use · Tribute Series sold separately