I have posted a couple of pictures.
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Note that the part numbers in the simplified circuit diagram are not the same as those marked on the original PCB. I had only used the minimum amount of detail to be able to run a simulation using Qucs Studio.
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It should be useable from approx 2MHz to almost 30MHz.
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The shifts are not exact 90 degrees over the entire frequency range, but they are close enough for the intended purpose.
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Regards,
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Martin
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On Mon, Apr 21, 2025 at 03:29 PM, Everett N4CY wrote:
Please send me what you have in the way of circuits?
