We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissable in your locale.

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lewisp Newbie

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Date Registered:
January 21, 2018, 1806 UTC
Local Time:
March 28, 2023, 0912 UTC
Last Active:
August 29, 2018, 1343 UTC

Item image   Simplified Practical Filter Design by Irving M. Gottlieb

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