I had speculated
-había especulado
Past perfectconjugation ofspeculate.There are other translations for this conjugation.

speculate

While I had speculated that this would make a nice audio output transformer in small radios for years, this is my first time to try it.
Mientras yo había especulado que este sería un transformador de salida de audio bueno en pequeñas radios durante años, esta es mi primera vez para intentarlo.
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