70 MHz bandpass filter

03/02/2015 graat 0

70 MHz bandpass filter When working on the 144 MHz bandpass filters, these were tunable over such a wide range that 70 MHz was almost […]

Receive splitters HF

25/01/2015 graat 0

To experiment with 2 receive antennas on the lower bands I  needed some kind of splitter / combiner with some isolation between te ports. A […]

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