B737-300 FLT CREW ENTERS RESTR AIRSPACE AFTER DEP FROM ELP.

Narrative

OUR TAXI-OUT INSTRUCTIONS WERE TO FOLLOW ANOTHER CARRIER'S RJ TO RWY 4. APCHING INTXN D; GND INSTRUCTED US TO CONTACT TWR. WE CHKED IN WITH TWR AND THEY CLRED US FOR IMMEDIATE TKOF RWY 4 INTXN D; TFC WAS ON FINAL FOR RWY 22; TURN TO HDG 340 DEGS ASAP. I WAS THE PF AND TOOK THE THRUST LEVERS ON THE ROLL AND WE EXECUTED A ROLLING TKOF FROM RWY 4. AT 400 FT AGL WE WENT INTO A 30 DEG BANK ROLLING OUT ON A HDG OF 340 DEGS. TWR INSTRUCTED US TO CONTACT DEP AND WE WERE ON OUR WAY. AT THIS TIME WE WERE AT 1000 FT AGL AND CLEANED UP AND THE CAPT CHKED IN WITH DEP. IT AS AT THIS TIME THAT HIS ALTIMETER FAILED. I TOLD HIM THAT MINE WAS FINE AND THE STANDBY WAS FINE TOO. HE CHKED FOR CIRCUIT BREAKERS AND I CONTINUED TO FLY HDG 340 DEGS. WHILE CHKING FOR BREAKERS THE ALTIMETER PROB CORRECTED ITSELF AND WE CONTINUED ON OUR HDG. AFTER WHAT SEEMED LIKE ABOUT A MIN WE HEARD COMPANY CALLING US ON COM #2. I TOOK THE RADIO CALL AS THE CAPT WAS ON COM #1 WITH DEP WE THOUGHT. THEY SAID THAT ATC WAS TRYING TO REACH US ON GUARD. WE DISCOVERED THAT THE RADIO FREQ WAS SET TO 119.5; NOT 119.15. WE CHANGED THE FREQ AND CHKED IN AND THEY GAVE US AN IMMEDIATE TURN AND TOLD US THAT WE WERE ENTERING RESTR AIRSPACE. WE TURNED TO THE NEW HDG AND CONTINUED WITHOUT INCIDENT. WE WERE NEVER GIVEN A PHONE NUMBER TO CALL; BUT CALLED OUR ATC SPECIALIST TO MAKE SURE THAT EVERYTHING WAS OK AND HAD MAINT LOOK AT THE CAPT'S ALTIMETER WHEN WE LANDED. CONTRIBUTING FACTORS WERE THE EXPEDITED DEP WITH A QUICK TURN; AND THE ALTIMETER FAILURE. ENSURE THAT THE PROPER FREQ IS SET AND THAT WE RECEIVE A REPLY BEFORE GETTING DISTR BY OTHER EVENTS.