hat
Sous: "Elektwonik hobbyist Manyèl", Spring 1994. Copyright © Fred Blechman ak Gernsback Piblikasyon, Inc 1994. Pibliye ak pèmisyon Gernsback. (Gernsback nan Piblikasyon pa egziste ankò).
eng
Source: "Electronics Hobbyist Handbook", Spring 1994. Copyright © Fred Blechman and Gernsback Publications, Inc. 1994. Published with permission from Gernsback. (Gernsback Publishing no longer exists).