2 layers85.1 × 71.7 mm
2 layers97.1 × 97 mm
Easy Digital 'FT8' Transceiver. Easy-Transceiver v0.01.
- Size
- 97.1 × 97 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 90
- Nets
- 74
- Pads
- 335
- Tracks, vias
- 423, 389
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 3 Feb 2022
- Updated
- 28 Jul 2022
Overview
PDX is an open-source printed circuit board by kholia, from the kholia/Easy-Transceiver repository on GitHub. It is a 2-layer board of 97.1 × 97 mm with 90 parts on 74 nets, routed with 423 tracks and 389 vias.
It is built around the 74ACT244SC, BS170 and 100UF/16V. Its parts include 28 capacitors, 10 resistors, 10 diodes, 6 connectors and 5 ICs. It belongs with the RP2040 boards of this library.
Main components
3
74ACT244SC
SOIC-20-300mil-40℃~+85℃ 2 24mA 24mA 4.5V~5.5V 40uA 74ACT 7ns@5V,50pF 8 Bidirectional Output enable Tri-State SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSonsemiBuffers, Drivers, Receivers, Transceivers
BS170
TO-92-55℃~+150℃ 1 N-channel 1.2Ω@10V 17pF 2.1V 24pF 500mA 60V 7pF 830mW N-Channel TO-92 MOSFETs ROHSonsemiMOSFETs
100UF/16V
C1812C1812 SMT ROHSJLCPCB AssemblyUncategorised
README
PDX/README.mdPDX
[UPDATE] Check out PDX-v2 instead ;)
A port of https://github.com/WB2CBA/ADX/ to Raspberry Pi Pico.
FT8 is natively decoded on the Pico using the code from the following repository:
https://github.com/kholia/pico_ft8_xcvr
The PDX RX Block when combined with the following projects becomes a complete
digital FT8 transceiver.
The live FT8 audio can also be decoded on PC / RPi / Android phone.
Notes
PIN39 VSYS (used to power system, can be in range 1.8V-5.5V).
BOM Sources
International users can buy from Mouser and DigiKey.
Here are some local BOM sources I use:
-
https://inkocean.in/ - CD2003 (Chinese clone which is known to work fine)
-
https://www.electronicscomp.com/ (SMD resistors + SMD caps + THT inductors)
-
https://www.ktron.in/ (SMA connectors)
-
https://www.comkey.in/ - Branded SMD stuff
-
https://rarecomponents.com/store/1002 - NXP 1N4148
-
https://projectpoint.in/ - CDIL 7805, PJ307 Stereo Socket
-
https://www.evelta.com/l7805-positive-voltage-regulator-1-5a-5v/ (alternate)
-
https://robu.in/product/si5351a-i2c-8-khz-160-mhz-clock-generator-breakout-board-module/
Credits
Parts
90| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C3, C6, C8, C9, C10, C14, C15, C21, C22, C23 |
| 4 | 1N4148 | Diode_THT:D_DO-35_SOD27_P2.54mm_Vertical_KathodeUp | D3, D4, D11, D12 |
| 4 | BS170 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q2, Q3, Q4 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_ISO7380_Pad | H1, H2, H3, H4 |
| 3 | TestPoint:TestPoint_THTPad_1.0x1.0mm_Drill0.5mm | TP_D1, TP_G1, TP_S1 | |
| 3 | 100nF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C19, C20, C25 |
| 3 | 2.2uH | Inductor_THT:L_Axial_L5.3mm_D2.2mm_P2.54mm_Vertical_Vishay_IM-1 | L4, L5, L6 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical | R3, R4 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R6, R7 |
| 2 | 10nF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C12, C17 |
| 2 | 10nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C4, C5 |
| 2 | 1N4148 | Diode_THT:D_A-405_P2.54mm_Vertical_KathodeUp | D7, D8 |
| 2 | 2.2nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C27, C30 |
| 2 | 820 | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C28, C29 |
| 2 | Jumper_2_Open | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1, JP2 |
| 2 | TestPoint | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP3, TP4 |
| 1 | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | GND1 | |
| 1 | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | CX1 | |
| 1 | 100 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical | R14 |
| 1 | 100uF/16V | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C16 |
| 1 | 100uF/16V | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C24 |
| 1 | 100uH | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | L2 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C26 |
| 1 | 10uF/16V | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C18 |
| 1 | 10uF/16V | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C13 |
| 1 | 12v (Max 18v) | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | 1M | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical | R1 |
| 1 | 1N4001 | Diode_THT:D_DO-35_SOD27_P2.54mm_Vertical_KathodeUp | D2 |
| 1 | 1N4148 | Diode_THT:D_A-405_P2.54mm_Vertical_AnodeUp | D6 |
| 1 | 1N5817 | Diode_THT:D_A-405_P2.54mm_Vertical_KathodeUp | D9 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical | R13 |
| 1 | 1uH | Inductor_THT:L_Toroid_Vertical_L10.0mm_W5.0mm_P5.08mm | L1 |
| 1 | 2.7k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical | R12 |
| 1 | 330 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical | R5 |
| 1 | 4.7k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical | R2 |
| 1 | 470nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C7 |
| 1 | 5.6V 5W | Diode_THT:D_DO-15_P5.08mm_Vertical_KathodeUp | D1 |
| 1 | 620pF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C11 |
| 1 | 74ACT244 | Package_DIP:DIP-20_W7.62mm_LongPads | U3 |
| 1 | BNC | Connector_Coaxial:BNC_Amphenol_B6252HB-NPP3G-50_Horizontal | J1A1 |
| 1 | CAL | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP8 |
| 1 | CAT | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | CAT1 |
| 1 | CD2003GB_GP | Package_DIP:DIP-16_W7.62mm_Socket | U1 |
| 1 | CDIL_7805_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U5 |
| 1 | CLK0 | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP1 |
| 1 | CLK1 | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP2 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | GPS1 |
| 1 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | TFT1 |
| 1 | Filter-Skip | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP3 |
| 1 | GND | TestPoint:TestPoint_THTPad_2.0x2.0mm_Drill1.0mm | TP7 |
| 1 | IO | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J3 |
| 1 | MIC | footprints:PJ-307 | CON2 |
| 1 | Pico | footprints:RPi_Pico_SMD_TH | XA1 |
| 1 | SI535X_Module | VFO_footprint:SI5351 Module_Vertical | U2 |
| 1 | SMA | SMA_EDGE:SMA_Samtec_SMA-J-P-X-ST-EM1_EdgeMount | J1 |
| 1 | SPK | footprints:PJ-307 | CON1 |
| 1 | uSDX_LPF_BAND_MODULE | uSDX_LPF_BAND_MODULE:uSDX_LPF_Band_Module | U4 |
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Questions
How big is the PDX PCB?
It measures 97.1 × 97 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PDX use?
90 parts, built around the 74ACT244SC, BS170 and 100UF/16V. 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.
Where can I download the PDX KiCad files?
From the kholia/Easy-Transceiver repository on GitHub, at the commit this page was made from: the board is PDX++/PDX.kicad_pcb and its schematic BoB-For-2003/PDX.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PDX design in my own project?
Its repository states no licence, so its author keeps all rights: ask kholia before reusing the design.