CAPT OF A DORNIER DO328 EXPERIENCED COCKPIT INTERCOM RADIO XMITTER PROB DURING TAXI FOR TKOF. HOWEVER; HE MADE THE DECISION TO TAKE OFF WITH THE CONDITION OVER THE OBJECTION OF THE FO SINCE THE PROB HAD CORRECTED ITSELF IN THE PAST DURING PWR APPLICATION FOR TKOF. THE PROB SUBSEQUENTLY DID GO AWAY AGAIN DURING TKOF.

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ON OCT/XA/99 WE BEGAN THE TAXI OUT FOR DEP FOR FLT WITH THE NORMAL CAPT AND FO AND A JUMP SEATER FROM ACR X. AS SOON AS WE STARTED TAXIING; WE NOTICED THAT MY (THE CAPT'S) INTERCOM WAS NOT WORKING PROPERLY. I COULD HEAR ATC AND THE FO NORMALLY; BUT NEITHER I NOR THE FO COULD HEAR ME TALK THROUGH MY HEADSET. I HAD EXPERIENCED THIS PROB ON THIS ACFT BEFORE AND WAS CONFIDENT THE PROB WOULD WORK ITSELF OUT; AS IT HAD ON THE PREVIOUS OCCASION. I CHKED MY HEADSET CONNECTIONS AND THE AUDIO PANEL CTLS AND FOUND THEM ALL TO BE NORMAL. WE LEFT 1 EAR UNCOVERED BY OUR HEADSETS; AND ACCOMPLISHED THE TAXI AND BEFORE TKOF CHKLISTS WITHOUT ANY PROBS HEARING EACH OTHER. WHEN WE REACHED THE END OF THE TXWY. I TOLD THE FO I WAS READY FOR DEP. HE SAID HE WAS NOT COMFORTABLE WITH THE PROB. I SAID THAT I HAD THIS PROB BEFORE AND THAT IT WOULD WORK ITSELF OUT AS SOON AS WE WERE ON OUR WAY. HE SAID HE WAS STILL NOT COMFORTABLE AND WAS NOT GOING. I SAID I KNOW THIS ACFT AND I WAS EXTREMELY CONFIDENT IT WOULD WORK FINE ONCE WE WERE UNDER WAY. I ALSO SAID THAT I TOOK HIS RECOMMENDATION UNDER ADVISEMENT AND WAS MAKING THE DECISION TO GO. I NOTIFIED ATC WE WERE READY FOR DEP AND TAXIED ONTO THE RWY. AS SOON AS I PUSHED THE PWR LEVERS FORWARD FOR DEP; MY INTERCOM BEGAN WORKING NORMALLY. THE TKOF WAS ACCOMPLISHED WITH ME AS THE PF AND THE FO MAKING ALL REQUIRED CALLS; EVEN THOUGH IT WAS THE FO'S TURN TO FLY. THE FLT WAS COMPLETED TO DENVER WITHOUT FURTHER INCIDENT.