DD1SB/ARDF-TXDate: 2026-10-15. Engineering review only; unbuilt and unenergized. Open RF80.kicadpro, schematic and native PCB in KiCad10.0.6. Three primary PCBs and the separate VHF true-AM design are unchanged.
RF2M is an open-source printed circuit board by DD1SB, from the DD1SB/ARDF-TX repository on GitHub, published under the MIT licence. It is a 2-layer board of 150 × 110 mm with 358 parts on 191 nets, routed with 4,551 tracks and 912 vias.
It is built around the SN74LVC1G125DBVR-TP, 74HC11D,653-JSM and RC0603FR-0710KL, with the RC0603FR-07100KL, CC0603KRX7R8BB104 and RC0603FR-071KL among its other parts. Its parts include 120 resistors, 90 capacitors, 18 inductors, 13 transistors and 6 ICs.
Date: 2026-10-15. Engineering review only; unbuilt and unenergized. Open RF80.kicad_pro, schematic and native PCB in KiCad10.0.6. Three primary PCBs and the separate VHF true-AM design are unchanged.
Two-layer210×160 mm evaluation board: protected4S normal Si5351/LM5134B/IRF610 path, approximately3 W full/1.2 W extended/calibrated Sprint targets; separate nominal10 mW Fox path, controller3.3 V/protected2S compatible reduced population. Fifteen schematic pages,273 electrical footprints/four mounting holes,74 test pads. Normal and Fox connectors remain independent. No measured target achievement is claimed.
Current review package: schematic PDF, 3D view, assembly, top copper, bottom copper, ERC, DRC, netlist, probe map, populations, Gerbers/drills. These are review artifacts, not a manufacturing release.
E1 is preserved at tag m3b-e1; it has withdrawn BD140/TL431 pin assertions. Current E2 decision, corrections, pin/footprint audit, DRC coverage, power gates, cost delta.
For historical context, read the decision, layout review, qualification, safety gates, staged bring-up, BOM and checks. Current ERC/DRC/parity/unrouted0 and pin-derived R1 regression256/31/16 do not prove analog/RF/thermal operation. Driver and PA must remain absent until bounded power-only fault tests pass.
M3A-R1 is preserved at commit0dfd224 and archived review files; R0 at tagm3a-r0. Legacy files directly under review/ and M3A cost workbooks remain historical. Current M3B outputs use the revision directory. Electrical manifest matches current schematic/PCB.
Reproduce from repo root:
python3 tools/m3b_exports.py --render
/usr/bin/python3 tools/m3b_verify.py
python3 tools/m3b_bom.py
python3 tools/m3be2_power.py
/usr/bin/python3 tools/m3be2_pinouts.py
/usr/bin/python3 tools/m3be2_audit.py
/usr/bin/python3 tools/m3be2_regressions.py
/usr/bin/python3 tools/m3be2_audit.py --manifest
sha256sum --check hardware/80m/review/M3B-E2/SHA256SUMSRendering requires a working display/Mesa; omit --render for nonvisual exports. The checked-in PCB is authoritative for final routing. m3b_pcb.py --place replaces it with initial placement/routing input; do not run it on the reviewed board. Likewise schematic regeneration requires reconciliation with the PCB before exports. Scripts do not upload, order or energize anything. Attribution/licences.
The old m3b_documentation.py writes/checks the frozen E1 package and is not an E2 export generator. Do not run it with --write on this revision. Use the E2 audit/hash tools above. Manufacturer pin tests check physical Q403 1B/2C/3E and U311 1K/2REF/3A independently of ERC/DRC. The ST illustrated face points toward PCB+Y (bottom edge); pin3 is west, pin1 east.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 34 | 10k | ARDF_2M:R_0603_1608Metric_E3 | R201, R202, R203, R302, R314, R405, R501, R502, R503, R504, R509, R512, R515, R706, R708, R804 +18 |
| 31 | 100k | ARDF_2M:R_0603_1608Metric_E3 | R104, R105, R106, R107, R108, R109, R110, R111, R112, R115, R116, R118, R204, R205, R304, R308 +15 |
| 30 | 100n | ARDF_2M:C_0603_1608Metric_E3 | C101, C102, C201, C203, C204, C205, C206, C207, C208, C302, C303, C306, C307, C310, C401, C506 +14 |
| 10 | 1k | ARDF_2M:R_0603_1608Metric_E3 | R117, R206, R306, R311, R508, R516, R606, R707, R709, R826 |
| 8 | 1n | ARDF_2M:C_0603_1608Metric_E3 | C104, C602, C604, C615, C703, C705, C706, C804 |
| 8 | 4.7k | ARDF_2M:R_0603_1608Metric_E3 | R102, R103, R305, R307, R310, R312, R505, R710 |
| 8 | MMBT3904,215 | ARDF_2M:SOT-23_E3 | Q303, Q306, Q403, Q404, Q405, Q702, Q703, Q704 |
| 7 | 33p | ARDF_2M:C_0603_1608Metric_E3 | C612, C613, C636, C712, C713, C722, C723 |
| 6 | 100p | ARDF_2M:C_0603_1608Metric_E3 | C406, C601, C637, C701, C702, C704 |
| 6 | 22u | ARDF_2M:C_1210_3225Metric_E3 | C304, C305, C403, C404, C960, C961 |
| 6 | 4.7n | ARDF_2M:C_0603_1608Metric_E3 | C405, C501, C502, C503, C504, C505 |
| 6 | 56n | ARDF_2M:L_0603_1608Metric_E3 | L611, L613, L711, L713, L721, L723 |
| 6 | 8.2p | ARDF_2M:C_0603_1608Metric_E3 | C611, C614, C711, C714, C721, C724 |
| 6 | MountingHole_3.2mm_M3 | ARDF_2M:MountingHole_3.2mm_M3_E3 | H1, H2, H3, H4, H5, H6 |
| 4 | 22p | ARDF_2M:C_0603_1608Metric_E3 | C631, C633, C644, C646 |
| 3 | 0 | ARDF_2M:R_0603_1608Metric_E3 | R517, R519, R650 |
| 3 | 1u | ARDF_2M:C_0805_2012Metric_E3 | C103, C202, C407 |
| 3 | 330p | ARDF_2M:C_0603_1608Metric_E3 | C632, C634, C639 |
| 3 | 91n | ARDF_2M:L_0603_1608Metric_E3 | L612, L712, L722 |
| 3 | AO3401A | ARDF_2M:SOT-23_E3 | Q302, Q305, Q309 |
| 2 | 2N7002 | ARDF_2M:SOT-23_E3 | Q301, Q502 |
| 2 | 33k | ARDF_2M:R_0603_1608Metric_E3 | R972, R976 |
| 2 | 33n | ARDF_2M:Coilcraft_1812SMS_Doc184 | L606, L635 |
| 2 | 4.7u | ARDF_2M:C_0805_2012Metric_E3 | C950, C951 |
| 2 | 68.1 | ARDF_2M:R_0603_1608Metric_E3 | R712, R713 |
| 2 | 74HC11D,653 | ARDF_2M:SOIC-14_3.9x8.7mm_P1.27mm_E3 | U204, U206 |
| 2 | 96.5 | ARDF_2M:R_0603_1608Metric_E3 | R603, R604 |
| 2 | BAT54 fault AND | ARDF_2M:D_SOD-323_E3 | D801, D802 |
| 2 | LM339BDR | ARDF_2M:SOIC-14_3.9x8.7mm_P1.27mm_E3 | U802, U803 |
| 2 | SN74LVC1G125DBVR | ARDF_2M:SOT-23-5_E3 | U601, U701 |
| 1 | 0 | ARDF_2M:R_1206_3216Metric_E3 | R952 |
| 1 | 0.05 | ARDF_2M:R_2512_6332Metric_E3 | R970 |
| 1 | 0.068 | ARDF_2M:R_2512_6332Metric_E3 | R309 |
| 1 | 10 | ARDF_2M:R_0603_1608Metric_E3 | R703 |
| 1 | 10 | ARDF_2M:R_2512_6332Metric_E3 | R506 |
| 1 | 100 | ARDF_2M:R_0603_1608Metric_E3 | R714 |
| 1 | 100 | ARDF_2M:R_1206_3216Metric_E3 | R704 |
| 1 | 10V gate clamp | ARDF_2M:D_SOD-123F_E3 | D304 |
| 1 | 10V input gate clamp | ARDF_2M:D_SOD-123F_E3 | D306 |
| 1 | 10V reverse-FET gate clamp | ARDF_2M:D_SOD-123F_E3 | D307 |
| 1 | 10k NTC B3977 | ARDF_2M:NTC_Remote_2Wire | TH801 |
| 1 | 10k bias trim | ARDF_2M:Potentiometer_Bourns_3296W_Vertical_E3 | RV501 |
| 1 | 10u | ARDF_2M:C_1210_3225Metric_E3 | C301 |
| 1 | 10u | ARDF_2M:Bourns_SRP1265A | L301 |
| 1 | 110k | ARDF_2M:R_0603_1608Metric_E3 | R819 |
| 1 | 116k | ARDF_2M:R_0603_1608Metric_E3 | R301 |
| 1 | 120k | ARDF_2M:R_0603_1608Metric_E3 | R811 |
| 1 | 12p | ARDF_2M:C_0603_1608Metric_E3 | C643 |
| 1 | 150 | ARDF_2M:R_0603_1608Metric_E3 | R801 |
| 1 | 150k | ARDF_2M:R_0603_1608Metric_E3 | R403 |
| 1 | 150n | ARDF_2M:Coilcraft_1812SMS_Doc184 | L604 |
| 1 | 150u | ARDF_2M:CP_Panasonic_OSCON_C10 | C409 |
| 1 | 154 | ARDF_2M:R_0603_1608Metric_E3 | R711 |
| 1 | 15p | ARDF_2M:C_0603_1608Metric_E3 | C647 |
| 1 | 160k | ARDF_2M:R_0603_1608Metric_E3 | R805 |
| 1 | 18.2k | ARDF_2M:R_0603_1608Metric_E3 | R101 |
| 1 | 18.5n | ARDF_2M:Coilcraft_A05T_Doc107 | L638 |
| 1 | 180n | ARDF_2M:L_0603_1608Metric_E3 | L704 |
| 1 | 18k | ARDF_2M:R_0603_1608Metric_E3 | R511 |
| 1 | 18p | ARDF_2M:C_0603_1608Metric_E3 | C642 |
| 1 | 19.1k | ARDF_2M:R_0603_1608Metric_E3 | R977 |
| 1 | 1k | ARDF_2M:R_1206_3216Metric_E3 | R513 |
| 1 | 1u | ARDF_2M:C_0603_1608Metric_E3 | C635 |
| 1 | 2.49k | ARDF_2M:R_0603_1608Metric_E3 | R974 |
| 1 | 20.9k | ARDF_2M:R_0603_1608Metric_E3 | R813 |
| 1 | 22n | ARDF_2M:Coilcraft_1008CS_Doc101 | L642 |
| 1 | 25MHz CL10p 10/10ppm | ARDF_2M:Crystal_SMD_3225-4Pin_3.2x2.5mm_E3 | Y101 |
| 1 | 26.5k | ARDF_2M:R_0603_1608Metric_E3 | R821 |
| 1 | 27k | ARDF_2M:R_0603_1608Metric_E3 | R514 |
| 1 | 27n | ARDF_2M:Coilcraft_1008CS_Doc101 | L643 |
| 1 | 27p | ARDF_2M:C_0603_1608Metric_E3 | C645 |
| 1 | 29.4k | ARDF_2M:R_0603_1608Metric_E3 | R817 |
| 1 | 3.3p | ARDF_2M:C_0603_1608Metric_E3 | C641 |
| 1 | 330 | ARDF_2M:R_0603_1608Metric_E3 | R931 |
| 1 | 330k | ARDF_2M:R_0603_1608Metric_E3 | R973 |
| 1 | 340k | ARDF_2M:R_0603_1608Metric_E3 | R404 |
| 1 | 39.2k | ARDF_2M:R_0603_1608Metric_E3 | R809 |
| 1 | 39n | ARDF_2M:Coilcraft_1008CS_Doc101 | L641 |
| 1 | 39p | ARDF_2M:C_0603_1608Metric_E3 | C638 |
| 1 | 4.02k | ARDF_2M:R_0603_1608Metric_E3 | R829 |
The 261 most common of 358 parts.
DD1SB/ARDF-TX
Date: 2026-10-15. Engineering review only; unbuilt and unenergized. Open RF80.kicadpro, schematic and native PCB in KiCad10.0.6. Three primary PCBs and the separate VHF true-AM design are unchanged.
DD1SB/ARDF-TX
Date: 2026-10-15. Engineering review only; unbuilt and unenergized. Open RF80.kicadpro, schematic and native PCB in KiCad10.0.6. Three primary PCBs and the separate VHF true-AM design are unchanged.
DD1SB/ARDF-TX
Date: 2026-10-15. Engineering review only; unbuilt and unenergized. Open RF80.kicadpro, schematic and native PCB in KiCad10.0.6. Three primary PCBs and the separate VHF true-AM design are unchanged.
DD1SB/ARDF-TX
Date: 2026-10-15. Engineering review only; unbuilt and unenergized. Open RF80.kicadpro, schematic and native PCB in KiCad10.0.6. Three primary PCBs and the separate VHF true-AM design are unchanged.
DD1SB/ARDF-TX
Date: 2026-10-15. Engineering review only; unbuilt and unenergized. Open RF80.kicadpro, schematic and native PCB in KiCad10.0.6. Three primary PCBs and the separate VHF true-AM design are unchanged.
AndrewCraswell/agency
Native KiCad engineering prototype, separate from the earlier ESP32/tscircuit board. Open usb-scoring-platform.kicadpro in KiCad 10; schematic and PCB are the editable source, with no generator required.
ademuri/colordance-circle
An art project that uses arrays of colored lights around a circle to create kaleidoscopic colored shadows.
misko/prompt2device
The separate vNext PCB skill and orchestrator package is available alongside the reference workflow below; existing projects keep their accepted toolchain until an explicit migration.
max-proj17/Self-Balancing-Bot
Self-balancing two-wheeled robot with PID control — includes firmware, PCB designs, and 3D files.s.
dwmorrin/power-module-skiff
This is a medium sized power module for $\pm$12 V and +5 V.
It measures 150 × 110 mm and has 2 copper layers, 1.6 mm thick.
358 parts, built around the SN74LVC1G125DBVR-TP, 74HC11D,653-JSM, RC0603FR-0710KL and RC0603FR-07100KL. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the DD1SB/ARDF-TX repository on GitHub, at the commit this page was made from: the board is hardware/2m/RF2M.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).