Ne, klamo = "clam," do la angla estus be a clam again.

(Looks up a couple of entries)

Perhaps Clam up?

But to be serious for a moment, The P.I.V. says [ klam/i (intr) Plurvoĉe krii. ] And that's all it says. But you were actually, apparently, asking for the etymology of reklami, or at least, I can give you that and klami simultaneously.

From "La konciza etimologia vortaro" Fare de André CHERPILLOD: reklami L. rĕclamare <- re~ «re~» + clamare «klami» <= H.E. kel «krii». So both the root words are derived from the Latin, but the klam/i part is traceable back to the ancient Hindo-European proto-languages.

I hope that this is satisfactory. Mi nun enlitiĝos, kaj dormos kiel klamo.