( ( ( Radio ( frequency range ) ) ( is ( ( ( ( roughly ( between 10 ) ) kHz ) and ) ( ( several hundred ) GHz ) ) ) ) ( , ( this ( ( ( refers ( to ( ( the frequency ) ( of ( the ( carrier wave ) ) ) ) ) ) only ) . ) ) ) )
(ROOT (S (S (NP (NNP Radio) (NN frequency) (NN range)) (VP (VBZ is) (NP (NP (QP (RB roughly) (IN between) (CD 10)) (NN kHz)) (CC and) (NP (QP (JJ several) (CD hundred)) (NNS GHz))))) (, ,) (NP (DT this)) (VP (VBZ refers) (PP (TO to) (NP (NP (DT the) (NN frequency)) (PP (IN of) (NP (DT the) (NN carrier) (NN wave))))) (ADVP (RB only))) (. .)))
Radio frequency range is roughly between 10 kHz and several hundred GHz, this refers to the frequency of the carrier wave only.
(ROOT (S (NP (NNP Am) (NN radio) (NNS waves)) (VP (VBP exist) (PRT (RP in)) (NP (DT the) (ADJP (QP (CD 540) (TO to) (CD 1600))) (NN khz) (NN frequency) (NN range))) (. .)))