HardLabs

ActiveSplitter

aaknitt·ActiveSplitterKiCad·ActiveSplitterMainPCB/ActiveSplitter.kicad_pcb

ActiveSplitter PCB layout, top view — open source board by aaknitt

About the ActiveSplitter PCB

ActiveSplitter is an open source PCB design by aaknitt, published on GitHub under the Custom license license. It is a 2-layer board measuring 68 × 31.5 mm, with 32 components from 11 distinct parts.

Other key parts include the PSA4-5043. By type, the board carries 13 resistors, 11 connectors, 5 capacitors, 2 inductors and 1 IC.

It belongs with the rf & radio designs in this gallery.

From the project

Hardware design for an active RF splitter for use with RTL-SDR receivers in the 100 MHz to 1 GHz band

Uses amplifier circuit from this LNA design.

Estimated cost to build is $40 to $50 in low quantities with U.S. sourced parts. Could be as low as $10 BOM cost with overseas sourcing and higher quantities.

- Designed to connect four RTL-SDR USB receivers to a single antenna without insertion loss. - Amplifier circuit provides about 18 dB to 20 dB of gain. Four way resistive divider results in 12 dB of loss per output, so total is about 6 dB of gain to each port. - Amplifier is designed to be powered from an SDR providing 3 to 5 volts DC power to the J1 RF output port via a bias tee or from…

ActiveSplitter, from the project README
From the project README

Main components on the ActiveSplitter

PSA4-5043

ActiveSplitter bill of materials (BOM)

32 components, 11 distinct parts.

QtyPartRefs
1
PSA4-5043
U1
4
SMA_EDGE
J1, J2, J3, J4
1
SMA_EDGE
J5
2
Conn_01x24_Pin
J6, J7
2
Conn_01x12_Pin
J8, J9
2
Conn_01x01_Pin
J10, J11
2
200n
L1, L2
4
100p
C1, C3, C4, C5
1
10n
C2
9
30
R1, R2, R3, R4, R5, R6, R7, R8 +1
4
DNP
R10, R11, R12, R13

ActiveSplitter design files

The KiCad project lives in the aaknitt/ActiveSplitterKiCad repository on GitHub; these links point at the commit this page was built from.

ActiveSplitter: common questions

How big is the ActiveSplitter PCB?

The ActiveSplitter measures 68 × 31.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ActiveSplitter?

32 components, from 11 distinct parts. The full bill of materials is listed on this page.

Where can I download the ActiveSplitter design files?

From the aaknitt/ActiveSplitterKiCad repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ActiveSplitter design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

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