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Is there a good band pass filter you would recommend that I could have anything below 14Mhz goes to loop and anything above goes to my Dipole?? (For KIWISDR receiver)

You mean anything below 14 MHz?comes from the loop and anything above 14MHz?comes from the dipole? I think you would have to make your own. You will need a lowpass filter on the RX side of your loops' bias-t and a high pass filter from the dipole. Both will feed a combiner, who's output feeds the Kiwi. Here is a link to a good filter design tool:

Here is a link for DIY splitter/combiners:

73 Tom

On Wed, Jan 5, 2022 at 04:00 AM, Tom Seeger wrote:

You mean anything below 14 MHz?comes from the loop and anything above 14MHz?comes from the dipole? I think you would have to make your own.

The device you require is called a diplexer.

Tonne Software provide a free design tool.



Don't worry about making it too complicated. Two coils and two capacitors should be adequate for your purpose, but there will be some interaction between the two antennas around the cross over frequency. So I'd try to make this cross over away from any frequencies of particular interest, and chose a bit of the spectrum that is relatively quiet instead.

Send me a PM if you need any help with the design and construction.

Regards,

Martin

Would suggest Tonne software ELSIE to design crossover filter. Tonne software is exceptionally good.

73, Alan G8LCO

I was thinking about using prebuild filter circuit. I found a chip from minicircuits. 16Mhz low pass ()?but I closes high pass I could find starts at 18Mhz ().? So anything between 16-18 will have around 3db loss.?

Found something better on Mini-Circuits
? ?