satnogs-diplexer

A 2m/70cm diplexer for SatNOGS groundstations

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18/18 lines (29 parts)

References	Qty	Digikey	Mouser	Farnell
C1	1	399-14791-1-ND	80-EDK476M016A9DAA	2068652
C2, C6	2	1276-1832-1-ND	605-500R15N4R7CV4T	1800809
C3	1	1276-2450-1-ND	80-C0805C104M5R	2520754
C4, C7	2	1276-1107-1-ND	77-VJ0805A180JXAMC	1759194
C5	1	1276-2633-1-ND	77-VJ0805A2R7CXAPBC	2821234
C8, C12	2	311-1857-1-ND	710-885342207010	1650861
C9, C10	2	478-11394-1-ND	581-08055C270KAT2A	2905646

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Satnogs Diplexer

A 2m/70cm diplexer intended for use in Satnogs ground stations. It is loosely based on the micro-diplexer by kw4fb. In addition to the high pass filter for 70cm and the low pass filter for 2m, this design also included an additional high pass filter at 120MHz, to eliminate interference by strong FM radio broadcast stations. Each antenna input provides an optional bias-tee to power a the antenna's LNA. See the schematic for details.

The layout file files can be found in the pcb folder.qucs contains a QUCS simulation for the diplexer.

The files are provided under the CERN Open Hardware Licence v1.2.