FLC OF DC9-30 HAS FLAG APPEAR ON RADIO ALTIMETER PLUS TCASII FAIL AND GPWS FAIL. BOTH ANNUNCIATE. AFTER OTHER CHKS A PAX ELECTRONIC DEVICE WALK THROUGH THE ACFT REVEALS A PAX WITH PAGER OPERATING. IT IS SHUT OFF AND INSTS RETURN TO NORMAL.

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CLBING OUT THROUGH 6000 FT DEPARTING MEM; THE CAPT'S RADIO ALTIMETER FLAG APPEARED. 'TCASII FAIL' ANNUNCIATED ON THE VSI AND GPWS FAIL ANNUNCIATED ON THE ANNUNCIATOR PANEL. THE USUAL CHKS PROVED NEGATIVE SO I ASKED THE LEAD FLT ATTENDANT TO DO A PAX ELECTRONIC DEVICE WALK AND SHE RETURNED TO SAY THAT A PAX HAD BEEN USING A PAGER IN FIRST CLASS; BUT HAD JUST SHUT IT OFF. THE RADIO ALTIMETER DID IN FACT RETURN TO NORMAL AS DID TCASII AND GPWS. BOTH TESTED NORMAL AS DID THE RADIO ALTIMETER. SINCE WE HAD HAD THE SAME PROB EARLIER IN THE DAY WITH THE SAME ACFT AND THE SAME TYPE OF PAGER AND HAD HAD THE RADIO ALTIMETER CHKED AFTER THE FIRST INCIDENT; I DID NOT FEEL IT WAS NECESSARY TO HAVE THE RADIO ALTIMETER CHKED AGAIN (ALTHOUGH I DID MAKE AN INFO ONLY ENTRY IN THE LOGBOOK). THIS WAS MY 5TH PAGER PAX ELECTRONIC DEVICE INCIDENT IN 8 MONTHS AND THE SECOND OF THE DAY. I FEEL THAT PAGERS OUGHT TO BE ADDED TO THE LIST OF PAX ELECTRONIC DEVICE ITEMS THE USE OF WHICH ON ACFT IS SPECIFICALLY BANNED.