I remember when I was kitting and shipping them reading about one a guy scratch built but I have no idea where he came up with the coils. Mabe Dave NM0S will jump in or a while back he was kitting them himself... easy kit to build.
de Paul N0NBD
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From: main@4SQRP.groups.io <main@4SQRP.groups.io> on behalf of troysk8 <kf7sey@...>
Sent: Monday, August 27, 2018 9:01 PM
Subject: [4SQRP] NS40
I was looking at the NS40 schematic and was wondering if any one has scratch built one with toroids? guess the next question would be would it work if I did?