Deep-dive into every series in the Hood's Finds catalog. Every build name, every spec, every paragraph of why you want it on your bench.
From a beginner's first 30W portable linear to a 1200W MOSFET monster to high-voltage prohibition-themed tube builds — the Hood's Finds amplifier series covers every topology, every power level, and every era of RF amplifier design. All 9 volumes are included in the Master Bundle.
The classic tube ladder, remastered as a 2nd Edition. Ten complete builds climbing 30W to 500W PEP — start with a 30W portable 6L6GC and finish with a 500W 3-500ZG station amplifier, with 6146, 4CX250B, 811A, 572B, 4CX1000A and a MOSFET-tube hybrid on the rungs between. Every rung teaches the next: full SVG schematics, bias references, interactive calculators, and real troubleshooting depth on every build.
The first rung of the ladder. A single-ended 6L6GC grid-driven Class AB1 amplifier — the lightweight HF field topology builders have trusted for decades. Simple bias, low part count, and a complete walk through the fundamentals every later rung assumes: grid drive, plate loading, and safe HV practice at the friendliest power level in the volume.
The 6146 is the tube that powered a generation of amateur transmitters. This single-ended grid-driven build takes about 5W of drive into a classic pi-network for a clean 50W PEP — the ideal step-up for a QRP station that wants real presence without a big chassis. Modest plate voltage, straightforward bias, complete tune-up procedure.
The ladder's VHF detour. A grid-driven 4CX250B pair running Class AB1 into a strip-line tank — the classic 2-meter workhorse configuration. VHF construction is its own discipline, and this build teaches it properly: strip-line technique, screen supply discipline, and clean 75W PEP with plate dissipation kept comfortably in spec.
The classic late-1940s workhorse configuration: two 6L6GC beam tetrodes in push-pull off a single B+ rail. Balanced drive, excellent harmonic suppression, and honest 100W PEP output. This is where the ladder introduces push-pull symmetry — the concept every higher-power build in the catalog leans on.
Solid-state speed driving tube linearity. An IRF510 MOSFET push-pull driver delivers clean RF into a 6L6GC final — the hybrid topology that isolates the high-voltage tube stage from the low-voltage drive chain. Best-of-both-worlds engineering, fully documented from gate bias to plate tank.
Two 811A triodes in grounded-grid Class B with an adjustable bias network and idle-current metering. The 811A pair is beloved for its simplicity and reliability at 200W PEP — and this build adds the bias instrumentation that turns a classic design into a teaching platform. Watch the idle current respond as you adjust, and understand why.
The 572B — an uprated 811A-class triode — anchors this compact grounded-grid mobile build. Robust plate dissipation and efficient grounded-grid operation deliver 250W within the constraints a vehicle installation imposes. Covers the packaging, cooling, and supply questions that make or break a mobile tube amp.
Grounded-grid push-pull with independent idle-set and transmit-shift bias — the topology that isolates idle current from drive so linearity survives at full power. A serious 300W PEP design with the bias architecture explained stage by stage, plus the HV supply discipline a build at this level demands.
A grid-driven 4CX1000A with an automatic bias servo — flat, stable 350W across HF without manual tuning drama. The bias-regulation loop is the whole lesson here: how a servo holds the operating point steady as conditions change, and why broadband stability is a control problem as much as an RF problem.
The top of the ladder. A 3-500ZG grounded-grid station amplifier — QSK-ready keying, full metering, and the stone-simple grounded-grid architecture that has anchored serious HF stations for fifty years. Grid at ground, plate on a stiff HV rail, and every step of the climb behind you when you build it. The Vol 1 capstone.
Ten builds, ten topologies — the whole amplifier design space in one volume, remastered as a 2nd Edition. Push-pull MOSFET symmetry, true Class E switching, a classic 6146B tube linear with modern protection, brutal Class C, a transformerless FET experiment, and a dynamic-bias SSB linear that adapts itself to your voice. Where Vol 1 is the ladder, Vol 2 is the arsenal.
Six meters is the magic band — and this push-pull linear is built specifically for it. VHF-optimized layout, microstrip matching, and a stability analysis that explains exactly where the parasitics live and how to kill them before they kill your transistors. Covers the complete build from chassis metalwork to on-air testing with a dummy load.
Class E is theoretically 100% efficient — and while real-world results are closer to 85–90%, that's still dramatically better than Class AB for CW and digital modes. This build walks through the resonant switching theory, component selection mathematics, and the tuning procedure that makes Class E work.
A compact 80W mobile linear that fits in a project box and bolts under a dashboard. The DC wiring guide covers proper fusing, ground strapping, and RF bypass — the three things that separate a mobile installation that works from one that causes RFI nightmares.
The 2SC1969 is one of the most popular transistors in the CB and amateur radio world. This dual-device combo build shows how to harness a matched pair for push-pull operation, including source degeneration resistor selection that prevents current hogging and gate stopper values that keep the design stable at HF.
The 6146B is the tube that powered a generation of amateur transceivers — and it's still an excellent linear amplifier tube. This build covers high-voltage power supply design, cathode-driven grid bias, Pi-network output, and plate tuning procedure. Complete with a high-voltage safety checklist for working with 800V plate supplies. Old school. Proven. Absolutely worth building.
Negative feedback in an RF amplifier is counterintuitive — most builders avoid it — but when done correctly it dramatically improves linearity and reduces IMD. This build shows exactly how to implement resistive feedback without killing gain or creating instability, and includes IMD measurement procedures to verify the improvement is real.
Not everything needs 100 watts — sometimes you need ears, not muscle. This low-noise receive preamplifier is optimized for minimum noise figure and covers HF through VHF. PIN diode T/R switching integrates cleanly with any transceiver. Includes noise figure measurement procedure and a comparison of common low-noise transistors with actual measured data.
Class C is only legal for CW and FM — but within those modes it's brutally efficient. This 200W Class C build is optimized for contest CW operation where you're transmitting at near-100% duty cycle for hours. The efficiency advantage over Class AB at this duty cycle is significant. Complete with key shaping circuitry to keep the clicks off the band.
Most broadband HF amplifiers rely on wound ferrite transformers. This transformerless design uses transmission-line techniques to achieve wideband impedance transformation without a single turn of wire on a core. The fabrication guide makes building the transmission-line elements completely reproducible.
Dynamic bias tracks the envelope of an SSB signal and adjusts the quiescent current in real time — high bias during voice peaks for linearity, reduced bias during pauses for efficiency. The result is an amp that's both cleaner and cooler-running than a fixed-bias design. Complete with a voice-pattern test procedure for verifying the bias tracking is working correctly.
The big-iron volume, remastered as a 2nd Edition. Five extreme RF builds — a dual-572B retro station, a 600W field amp, the 1200W VRF2933 monster — stand beside five study builds inspired by the most legendary audio amplifiers ever made: Le Monstre, Hiraga, Phase Linear 700, Aragon 4004, Hafler DH-500. Same physics, both worlds, one volume.
Pure Class A operation — every transistor conducting on every cycle, all the time. The inefficiency is the point: Class A delivers the lowest possible distortion. This build is for the builder who wants the cleanest signal on the band regardless of power bill consequences. Massive heatsinking, precise bias current, and a linearity test procedure that will make you proud of what you built.
An updated take on the legendary Hiraga Class A topology using modern high-frequency MOSFETs for improved bandwidth and lower output impedance. The Hiraga circuit is famous for its subjective sonic quality — this build documents both the original topology and the modern modifications, with measurements to show what actually changed.
Bob Carver's Phase Linear 700 was famous for two things: enormous power and a tendency to self-destruct. This inspired design captures the high-current output stage topology while adding the protection circuitry the original famously lacked. The result is a 700-watt-class amplifier with Phase Linear character but without the Phase Linear drama.
Six hundred watts across HF and VHF from a single amplifier — the matching network design that makes this possible is the centerpiece of the build. Dual-band transformers, switchable Pi networks, and an interlock system that prevents operating into an open antenna.
The one they come for. Twelve hundred watts from a bank of paralleled MOSFETs — this build is the most technically demanding in Vol 3 and rewards the careful builder with a legitimate contest-grade amplifier. Current sharing between devices, balanced gate drive, thermal management for sustained 1200W output, and a power supply that doesn't apologize to the utility grid. Not for the timid. Completely documented.
The 572B is a rugged, widely available triode that makes a fantastic linear amplifier tube. This grounded-grid design is as close to foolproof as high-voltage amplifiers get — no tuned input required, simple plate circuit, and an input impedance that most transceivers can drive directly. Complete plate supply design, bandswitch construction, and a neutralization check procedure.
The Aragon 4004 was a benchmark amplifier of its era — high bias, robust output stage, overbuilt power supply. This replica builds on the original topology with modern components and better protection circuitry. Includes a side-by-side comparison of original and modern component choices and explains why each substitution was made.
Ultra-linear operation taps the output transformer screen grids to reduce distortion without sacrificing output power — a technique borrowed from high-fidelity audio and applied to RF. The result is a 500W amplifier with measured IMD numbers that will make you question why anyone builds anything else.
David Hafler's DH-500 defined a generation of amplifier design. DC coupling, high feedback, and a complementary output stage that was ahead of its time. This implementation preserves the essential circuit architecture while adding modern DC offset protection and SOA limiting. The circuit analysis section explains every design decision Hafler made and why it remains correct today.
SSB makes unique demands on a linear amplifier — the peak-to-average power ratio means the amp must handle full power peaks without compressing while remaining linear at average voice levels. This 500W design is optimized for exactly that behavior: fast bias recovery, adequate headroom for peaks, and ALC interface documentation for every common transceiver family. The Vol 3 closer.
30 complete amplifier builds — from a beginner's 50W QRP linear to a 1200W MOSFET monster — in one instant download. The full foundation of the Hood's Finds amplifier series.
The working builder's volume. Simple AB push-pull FET, classic 6AQ5 tube, 2SC1971 mobile linear, hybrid tube-FET combo, single-transistor CW QRP, broadband JFET RF preamp, Class C VHF booster, and more. These are the builds you actually construct in a weekend — complete, practical, and proven. No exotic parts. No unobtanium transformers. Just real amplifiers that real builders can build.
Ten Class-AB powerbuilders: MRF300 push-pull, BLF6G22 high-band booster, IRF540 budget AB, hybrid 6V6+IRF530/9530, 2N3866 Class E CB, 2SC1971 Class C CB, 2N3055 Class AB linear CB, IRF510 Class E CB, 2SC2879 push-pull Class AB, and BD139/BD140 push-pull. The transistor lineup reads like a who's-who of RF amplifier parts. Detailed bias setup and thermal management for every build.
The 11-meter dedicated volume. The Bare-Knuckle Class C AM Slammer. The Sideband Sniper. The GaN Gun-Slinger. The DSP Dynamo. Ten builds named for what they do and built for where they live. CB-optimized transistors, outlaw-appropriate topologies, and enough power to rattle windows three counties over. Educational purposes only. Complete design documentation for each build.
Essential homebrew, Class-AB elite designs, and 11-meter Outlaw Power — 30 builds covering every solid-state topology you'll ever need.
The glow-in-the-dark volume. Classic 6L6 Beast, 12AX7 Driver Amp, Compact 6BQ5 Linear, 2x6L6 Parallel CB Build, Sweep Tube Sleeper, Twin 6DQ6 Linear, Plate-Modulated Tube Amp, Dual-Band 10/11m with 6146s, Vintage Rebuild, and Mobile Tube Amp on Steroids. Ten tube builds from the practical to the legendary. Every build includes a high-voltage safety checklist, plate supply design, and the specific tuning procedure for that tube's characteristics.
Prohibition-themed high-voltage tube builds. The Bootlegger (4x6L6GC, 75–125W). The Speakeasy (2x811A, 175–250W). The Rumrunner (1x813, 150–225W). The Contraband (2x572B, 300–400W). The Hustler (1x3-500Z, 350–500W). The Syndicate (4x811A, 400–600W). The Kingpin (1x833A, 150–200W) — and more. Ten builds, 500V+ supplies, 10 CSS visual themes, animated interface, and a clock widget. The most advanced product in the catalog.
The Tickler. Swing King. The Splatterer. The Frequency Bandit. Echo Chamber. The Screamer. The Clipper Killer. The Harmonizer. RF Reactor. The Final Boss. Ten modulator-focused builds that live in the space between transmitter and amplifier. Audio processing, clipper circuits, frequency shaping, and modulation enhancement designs with dark/light/warm CSS themes and advanced JavaScript calculators.
Classic tube builds, 500V+ prohibition-era underground collection, and modulator-focused forbidden series. 30 builds. The premium end of the amplifier catalog.
The builders who shaped the CB and ham radio amplifier world deserve to be documented. Eighteen tribute volumes — DaveMade, Fatboy, X-Force, Varmint XL, Hopper Built, Italy Built, Carl Built, Donkey Stomper, Box Builder Idaho, 307 Amps, Tinman, Gatekeeper, Crusher Built, Wizard Built, Skullcracka, Mud Duck, RocketBox, and Eagle Made — each one a full 10-build series honoring a legend's style, topology, and contribution to the hobby. The Tribute Series is sold separately and is not included in the Master Bundle.
Big Red 1x2. Alley Pounder. Ghost Key Warrior. Redline Ghost 1x4. Driver Slammer. The 2x4 Street Heat. Ghost Box Lite. The 1x8 Mud Skipper. The Sled. The Redneck Rocket. Ten tribute builds inspired by the DaveMade style — HG-2879 transistors, street-named builds, and the kind of output stage simplicity that makes a design reliable for decades. Each build includes a reverential homage section and a Hood's Finds deviation callout wherever the design was updated for educational clarity. Not affiliated. Just honored.
Big Nasty 2x3 Combo. Fat Stack 4-Pill. Mobile Mayhem 1x4. Bench Buster 6-Pill. Driver Slam 1x2 Compact. Swamp Pounder 8-Pill. The Fat Brick 1x1. Twin Deck PowerHouse. 2x4 Pushin' Power. Competition Slammer Base. The Fatboy style is all about output stage robustness — more transistors, more thermal mass, more reliability. Ten tribute builds documenting that philosophy from a 1-pill compact to an 8-pill competition base station.
1x2 Storm Box. Ghost 2x2879. Street Talker 1x4. Long Chassis 2x4 Combo. Mobile Beast 4-Pill. Twin Driver Special. 6-Pill Stackdown. High Drive 8-Pill. The Alley Brawler. The Bench Load King. X-Force builds are characterized by their high-drive tolerance and robust output stages designed for real-world mobile and base station abuse. Ten tributes documenting the X-Force approach to maximizing performance from the HG-2879 transistor family.
The First Bleed. The Deep Bleed. The True Bleed. The Soviet Bleed. The Long Bleed. The Push-Pull Bleed. The Iron Bleed. The Bias Bleed. The Legacy Bleed. The Flagship Bleed. The Varmint XL is one of the most respected names in the CB amplifier world, and this ten-build tribute series documents the HG-2879-based circuit topology that made it legendary. Complete specs comparison tables showing original vs Hood's Finds implementation.
The Inlet Shrimper. The Lowcountry Hammer. The Straight 4. The Workbench 4. The SSB 2 Pill. The 6 Pill Base. The Low Drive 4. The 8 Pill Bruiser. The Carolina Crusher. The Flagship. South Carolina Lowcountry geography meets Hopper Built/Hopper Electronics circuit philosophy in ten tribute builds that honor one of the most distinctive builders in the hobby. Amber accent color system, HG-2879 specialist designs. If the original builder reads it, they feel honored.
The Roman Starter. The Milan Driver. The Long Board 4. The Venice Pusher. The Napoli Six. The Sicilian Split. The Torino Eight. The 1969 Deep Driver. The Italia Massima. The Italia Ultima Flagship. Ten tribute builds honoring the Italy Built long-board push-pull tradition — 2SC2879 finals, 2SC1969 drivers, 13.8V DC, 90W to 640W. Italian flag CSS theme. The most architecturally complete tribute series in the catalog. Build guides include signal flow diagrams, full BOMs, and assembly procedures — not traditional circuit schematics.
The Forge Sessions. Ten tribute builds honoring the Carl Built HG 2SC2879 push-pull tradition — from the entry-level Forge to the legendary 1500W PEP capstone. These builds represent the upper end of what the 2SC2879 transistor can do in the right hands, documented with the reverence the craft demands. 150W–1500W PEP. If the original builder reads it, they feel honored. Build guides include signal flow diagrams, full BOMs, and assembly procedures — not traditional circuit schematics.
The Stampede Sessions. Ten tribute builds honoring the Donkey Stomper 2SC2879 pill-amp tradition — from a single-pill starter to our 8-pill "Eight-Hoof Thunder". 100W–800W PEP on our own bench, with honest per-pill power expectations. Donkey Stomper have been building to order since 1998, and their own line runs to ten transistors.
The Silicon Frontier. Ten tribute builds documenting the modern LDMOS era — BLF188XR finals from single-device builds to dual-device monsters. The solid-state high-power capstone of the Tribute Series, honoring a working bench that does its LDMOS work in the open, on camera.
The High Plains Sessions. Ten tribute builds honoring 307 Amps in the 2SC2879 pill-amp tradition. From the starter pair to the ~900W PEP flagship, every build documented with full reverence for the high-plains bench that earned the name.
The Crossroads Sessions. Ten tribute builds honoring Tinman Amps and the hand-built 2SC2879 tradition — brushed-metal craftsmanship, clean layouts, and build discipline from starter pairs to the ~850W PEP flagship.
The Candy Coat Sessions. Ten tribute builds honoring Gatekeeper Amps — the glossy candy-coat finish outside and the clean 2SC2879 build discipline underneath. Starter builds through the ~850W PEP flagship, documented builder to builder.
The Bluegrass Sessions. Ten tribute builds honoring Crusher Built — rugged Kentucky heavy-duty construction in the 2SC2879 tradition, from the first matched pair to the ~850W PEP flagship. Built to take a beating, documented to teach why it can.
The Prairie State Sessions. Wizard Built earned their name on big transmitting-tube amplifiers — and on a bench they put on camera, where finished units get keyed up, output-tested and shown in the open. Ten tribute builds honoring that measured-not-claimed standard — from a two-pill mobile to a twelve-pill console flagship. The pill designs are Hood's Finds originals; their own catalog is tube work.
The Bone Yard Sessions. The shop went quiet years ago — which is exactly why the hunt is on. Skullcracka amps trade as collectibles today because nobody is making more. Ten tribute builds honoring the legend, climbing from a two-pill mobile all the way to a sixteen-pill flagship modelled on the unit owners and sellers documented.
The Waterline Sessions. Mud Duck Sharky took modern LDMOS on 27 MHz and did the generous thing with it — published it as pallet kits an operator assembles himself, with the build tutorials to walk through it. Ten complete LDMOS builds that start at one pallet on a copper spreader and end at a four-device, water-cooled 2400W PEP console.
The Ignition Sessions. There's a bench out there that built its own output device — the RB-1942 RF MOSFET, their part number, and it is what their whole amplifier line runs on. Ten complete builds of ours where solid-state RF — bipolar AND MOSFET — is taught with real discipline.
The Ironworks Sessions. Somewhere out there is a bench that runs on vacuum — genuine big-iron EIMAC and Russian tube work, plus a parts house machining its own sockets, Teflon chimneys, plate chokes and HV boards for the whole scene. Ten builds where high-voltage craft is taught right — always at the 1500W PEP legal limit. The closer of the tribute run to Vol.20.
Crusher Built + Wizard Built + Skullcracka in one collector's download. 30 tribute builds — the Bluegrass, Prairie State, and Bone Yard Sessions — with full parts lists, board layouts, bias procedures, tune-up walkthroughs, and troubleshooting on every build.
307 Amps + Tinman + Gatekeeper in one collector's download. 30 tribute builds honoring three modern legends of the underground 2SC2879 pill-amp world — the new trilogy of Hood's Finds tribute documentation.
DaveMade + Fatboy + X-Force in one collector's download. 30 tribute builds honoring three legends of the CB radio amplifier world. The complete first trilogy of Hood's Finds tribute documentation — the definitive reference for HG-2879-based amplifier topology as practiced by the builders who defined the genre.
Six encyclopedia volumes documenting the history of linear amplifiers — the makers, the models, decades of design evolution. Vol.1 U.S., Vol.2 Japan, Vol.3 Europe, Vol.4 U.S. Edition Vol.2, Vol.5 Export/10-Meter, and Vol.6 Military & Commercial are all live now, or grab the Vols 1-3 Encyclopedia Bundle for $14.99.
The definitive reference for American-made ham radio linear amplifiers. Ameritron to Yaesu — 26 U.S. manufacturers, 140+ documented amplifier models, more than 70 years of design history in a single offline HTML reference. Six visual themes including Night, Daylight, Brass, Steel, Patriot, and Paper. Iron-wrench ratings system. Fully interactive navigation. Works 100% offline — no internet required, ever.
The Japan chapter of the Encyclopedia series. Fifteen manufacturer profiles — Yaesu, Kenwood/Trio, Icom, JRC, Tokyo Hy-Power, Daiwa and more — models, specifications, tubes, topologies, and the engineering legacy that defined precision RF amplification. Tokyo-night CSS theme with six visual modes. Crimson and gold accent design. Instant download, works 100% offline.
The European companion to the U.S. and Japan Editions. Twelve European ham radio linear amplifier manufacturers documented in full — models, specifications, tubes, topologies, and the engineering heritage of the continent. Six visual themes, fully interactive navigation. Instant download, works 100% offline.
The second American volume — 20 more U.S. makers documented in full, from the tube era to modern LDMOS. Models, specifications, topologies, and iron-wrench collectability ratings on every maker. Six visual themes, fully interactive navigation. Works 100% offline.
The export side of the amplifier world — 13 makers of export and 10-meter linears documented in full: models, specifications, topologies, and the collector's context for the gear that ruled the export bench. Six visual themes. Works 100% offline.
The professionals' side of HF — 12 military, government and commercial makers in one collector's reference: Harris, Collins, Racal, Rohde & Schwarz, Marconi, Telefunken, Codan, Barrett, Sunair, TMC, Mackay, and Continental. The gear that carried embassy traffic and maritime distress watches — built to specs no ham amp ever chased. Cross-reference indexes, iron-wrench ratings, works 100% offline.
All three first-trilogy encyclopedia editions in one download — 53 manufacturers, decades of amplifier history across the U.S., Japan, and Europe. The reference library at a bundle price. Works 100% offline.
Complete ham radio service manual collections for five major brands — Yaesu, Kenwood, Icom, Alinco, and Mixed. Schematics, alignment procedures, parts lists, and technical data for dozens of transceivers. Sold individually.
The most complete Yaesu service manual collection available as a digital download. Twenty-one ZIP files covering dozens of Yaesu transceivers, receivers, and accessories — HF, VHF, UHF, handheld, and base stations. Every file includes original service schematics, alignment procedures, technical specifications, and parts list data. Instant download, works offline, yours forever.
Seventeen ZIP files of Kenwood ham radio service documentation covering transceivers, receivers, and accessories across multiple decades of production. Kenwood's engineering documentation is among the most detailed in the industry — circuit descriptions, alignment data, and schematics that actually explain what each stage is doing and why.
Ten ZIP files of Icom service documentation covering a wide range of transceivers, handheld radios, and accessories. Icom manuals are known for their clear schematic presentation and detailed alignment procedures — which makes them particularly valuable for the technician who needs to actually fix something rather than just replace the whole board.
Three ZIP files covering Alinco ham radio equipment — transceivers, handhelds, and accessories. Alinco built excellent value-oriented equipment with solid engineering documentation, and this collection preserves that documentation for the hobbyist community.
The catch-all collection — ham radio service documentation that doesn't fit neatly into the dedicated brand volumes. Multiple manufacturers, multiple eras, all organized and ready to reference. If you work on a variety of equipment and want a single download that extends your reference library beyond the big four brands, this is the volume for you.
51 interactive offline JavaScript calculators covering every calculation a radio builder needs. All 51 tools work with zero internet connection. Sold individually or as the Calculator Bundle.
The essential RF builder toolkit: impedance matching calculator, resonance frequency tool, SWR and power calculator, antenna cut-length calculator, capacitor and inductor value solver, transmission line calculator, and more. These are the calculations every builder does repeatedly — and every one of them has been turned into an interactive form you fill out and get an instant answer from.
Amplifier-focused calculations: bias point calculator, load line analysis tool, gain and efficiency calculator, power supply sizing tool, transformer ratio calculator, heat dissipation calculator, and more. These are the tools you reach for when you're designing — not just following someone else's schematic, but actually understanding why the values are what they are.
Advanced calculation tools: LC filter design calculator, coil winding tool with wire gauge compensation, enclosure volume and port tuning calculator, Ohm's law multi-solver, frequency conversion tool, wavelength calculator, and more. Vol 3 covers the calculations that come up less often but matter enormously when they do.
Every calculator Hood's Finds has built — 51 interactive offline tools in one instant download.
When you need a schematic now, not after a 45-minute internet search. Schematic libraries, CB radio guides, antenna builds, subwoofer enclosures, and repair references — all included in the Master Bundle.
The schematic reference library. 1,200+ homebrew electronics circuits spanning amplifiers, power supplies, RF circuits, audio gear, test equipment, and more. Organized and searchable. When you need to know how something was done — or need inspiration for how to do it differently — this collection has an answer.
A dedicated linear amplifier schematic collection — CB, ham, HF, VHF, single-transistor builds to multi-pill powerhouses. When you need to trace a circuit, understand a topology, or compare your build to a reference design, this collection is faster than searching the internet and more reliable than anything you'll find there.
The complete CB radio modification reference. Frequency expansion, clarifier modification, power output optimization, and performance enhancements for popular CB models. Every modification is documented with the specific procedure, the rationale for the change, and the expected result. Educational reference.
Complete Cobra CB radio service manual collection. Schematics, alignment procedures, and technical data for Cobra transceivers. When your Cobra needs service or you're trying to understand what makes it tick, this collection has the original documentation.
Twenty complete ham radio antenna builds — dipoles, verticals, yagis, loops, wire antennas, and specialty designs. Every build includes cut-length calculations, feedpoint impedance data, construction diagrams, and a mounting/installation guide. The antenna is the most important part of your station — this volume treats it that way.
Twenty CB radio antenna builds covering mobile and base configurations, ground planes, fiberglass whips, and specialty designs. 11-meter optimized with SWR tuning guidance and installation procedures for vehicle and fixed-station mounting.
Professional Skar Audio subwoofer enclosure designs — ported, sealed, and bandpass. Calculated internal volumes, port dimensions and tuning, bracing requirements, and construction procedures. Skar builds great drivers — this collection makes sure the box they go in is worthy of them.
Complete PS5 repair guide covering the failure modes that actually happen: HDMI port replacement, power supply service, fan control issues, and component-level diagnosis. Step-by-step with illustrated procedures. When the repair shop quotes you $200 and you have a soldering iron, this guide pays for itself on the first job.
Taramps car audio amplifier repair guide covering protection circuit diagnosis, MOSFET replacement, power supply repair, and common failure patterns. Taramps builds good amplifiers that can be repaired — this guide makes sure they are rather than getting thrown away over a $3 MOSFET.
All 9 linear amplifier build volumes — 90 builds from 30W QRP to 1200W monster — with full SVG schematics and interactive calculators built into every volume. One price. Offline forever. The Master Bundle is the 9 amp volumes only — Tribute Series, manuals, and all other products are sold separately.
Instant digital download · Works 100% offline · Yours forever · Educational use · Tribute Series sold separately
Want the Tribute Series too? The 7 Tribute volumes (DaveMade, Fatboy, X-Force, Varmint XL, Hopper Built, Italy Built, Carl Built) are sold separately at $9.99 each ($14.99 for Italy Built), or grab the Tribute Bundle Vol 1-2-3 for $14.99. Browse Tribute Volumes →