Hi Bill,

I have one and can try to answer any questions you have about it. I never was able to find documentation for the 402DL but the documentation for the 402 is very close and most of the schematic is identical. On mine, I had to replace a quad comparator and some other IC I can’t think of right now. The alignment was also way off, but the 402 manual had enough hints to figure it out on the 402DL.

Chris

W4SVA

On Sat, Aug 1, 2026 at 12:58 PM Bill Abate via GreenKeys <greenkeys@mailman.qth.net> wrote:

73,

Bill, K3PGB

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