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2 layers50 × 50 mmK BF, the printed circuit board in 3D

OpenHPSDR Audio I/O board, Andromeda/CPU/Hermes interface

Size
50 × 50 mm
Copper layers
2
Thickness
1.6 mm
Parts
25
Nets
27
Pads
100
Tracks, vias
99, 27
Pours
1
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
6 Nov 2023
Updated
5 Nov 2023

Overview

K BF is an open-source printed circuit board by DH1KLM, from the DH1KLM/K_BF repository on GitHub. It is a 2-layer board of 50 × 50 mm with 25 parts on 27 nets, routed with 99 tracks and 27 vias.

It is built around the SJ1-3535NG. Its parts include 7 connectors and 6 capacitors.

Main components

1

README

README.md

K_BF

OpenHPSDR Audio I/O board, Andromeda/CPU/Hermes interface

K_BF aka Kêtos

This card is an interface between

  • the IDC10 output connector of "audio" signals (HP/headphones, microphone/PTT, CW key) coming from the Andromède board

  • the audio input/output jack connectors going to the embedded computer

  • the input/output jack connectors of the main SDR board (Hermes/Angelia/Orion) using the OpenHPSDR standard.

Ketos is the name of the sea monster that Perseus slays to deliver Andromeda...

Andromeda is the high-end "human to machine interface" of the OpenHPSR architecture.

Kêtos, an openHPSDR audio switchboard

Parts

25
QtyValueFootprintReferences
60805Inductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolderFB2, FB3, FB4, FB5, FB6, FB7
610nfCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC2, C3, C4, C5, C6, C7
6SJ1-3535NGSJ1-3535NG:SJ1-3535NGJ9, J10, J11, J12, J13, J14
4MountingHole_PadMountingHole:MountingHole_3.5mm_Pad_ViaH1, H2, H3, H4
2LOGOCetos:CetosG***, G***
1IDC10Connector_IDC:IDC-Header_2x05_P2.54mm_VerticalJ1

Questions

How big is the K BF PCB?

It measures 50 × 50 mm and has 2 copper layers, 1.6 mm thick.

What parts does the K BF use?

25 parts, built around the SJ1-3535NG. 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 K BF KiCad files?

From the DH1KLM/K_BF repository on GitHub, at the commit this page was made from: the board is K_BF.kicad_pcb and its schematic K_BF.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the K BF design in my own project?

Its repository states no licence, so its author keeps all rights: ask DH1KLM before reusing the design.

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