AN EMB120 FO DSNDS BELOW THE AUTH DECISION HT WHILE ON AN ILS APCH WITH A 'RESTR CAPT' TO MCO; FL.

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DURING AN ACR FLT; I SERVED AS PF WITH A HIGH MINIMUMS CAPT. UPON RECEIVING THE DEST ATIS; WE DETERMINED THAT THE ARPT WAS RPTING LOWER VISIBILITY AND CEILING THAN WE REQUIRED TO INITIATE THE APCH. WE CONTACTED OUR DISPATCH DEPT WHO INFORMED US WE COULD INITIATE THE APCH WITH REQUIRED VISIBILITY ONLY AND THE CEILING REQUIREMENT FOR HIGH MINIMUMS; CAPTS DID NOT PREVENT INITIATING THE APCH. AS WE WERE BEING VECTORED FOR A HOLD; APCH CTL ADVISED US THAT THE RVR HAD INCREASED ABOVE OUR REQUIREMENTS AND WE REQUESTED AND RECEIVED VECTORS TO THE ILS FINAL APCH COURSE. AFTER A VERY HURRIED BRIEF; WE INTERCEPTED THE FINAL APCH COURSE AND GS. AS WE HAD NOT CONTACTED OUR OPS GND FACILITY; THE PIC CALLED THEM ON COM #2 JUST AS WE PASSED THROUGH 1000 FT ABOVE MINIMUMS; AND WAS NOT FOLLOWING THE PROGRESS OF MY APCH. CONSEQUENTLY; THERE WAS LITTLE OR NO COM BTWN US AS WE DSNDED TO DECISION HT. UPON APCHING DECISION HT; I DID NOT HEAR THE STANDARD 'GAR' OR 'APCH LIGHTS; CONTINUE' CALL AND I LOOKED OUTSIDE THE ACFT FOR ANY SIGN OF THE RWY. A FEW SECONDS LATER I SPOTTED THE APCH LIGHTS AND FINALLY THE RWY. HOWEVER; DUE TO THE LACK OF COM; DURING THE DELAY BTWN APCHING DECISION HT AND SPOTTING THE RWY; I AS PF MOST LIKELY DSNDED BELOW DECISION HT BEFORE HAVING THE APCH LIGHTS IN SIGHT. WHILE THE CAPT WAS TRYING TO ADVISE OUR OPS AS PER PROCS; IT WAS AN INOPPORTUNE TIME TO DO SO.