Narrative:

Cruising at FL370 from den to iah, lost 2 way communication with ZFW near millsap (mqp) VOR. All communication had been normal up to that point. It was night with little radio communication between other aircraft and center but it seemed unusually quiet so we attempted contact with fort worth on the assigned frequency with no luck. We tried several other frequencys off of the high chart before finding one that worked intermittently with ZFW and an aircraft also working fort worth. As it turned out, we were transmitting, but unable to receive on either radio except intermittently. ZFW relayed descent clearance through the only aircraft on the frequency. As we descended communications became more intermittent so decision was made to squawk 7600 and as we got to lower altitudes squawk was changed to 7700 to insure clear arrival space. At iah we flew to the VOR and executed the complete ILS 14L approach. On short final we again made contact with the aircraft on our frequency and had ZFW ask iah tower for green landing light. The green light was visible at approximately 3 mi but very difficult to find among all the other airport lights. We completed a safe approach and landing and turned the aircraft over to maintenance at the gate.

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Original NASA ASRS Text

Title: WDB ACFT LOST RADIO RECEPTION EXCEPT FOR INTERMITTENT CONTACT WITH ANOTHER ACFT WHO RELAYED. FLC SQUAWKED 7600 THEN 7700, HAD GREEN LIGHT FOR LNDG.

Narrative: CRUISING AT FL370 FROM DEN TO IAH, LOST 2 WAY COM WITH ZFW NEAR MILLSAP (MQP) VOR. ALL COM HAD BEEN NORMAL UP TO THAT POINT. IT WAS NIGHT WITH LITTLE RADIO COM BTWN OTHER ACFT AND CENTER BUT IT SEEMED UNUSUALLY QUIET SO WE ATTEMPTED CONTACT WITH FORT WORTH ON THE ASSIGNED FREQ WITH NO LUCK. WE TRIED SEVERAL OTHER FREQS OFF OF THE HIGH CHART BEFORE FINDING ONE THAT WORKED INTERMITTENTLY WITH ZFW AND AN ACFT ALSO WORKING FORT WORTH. AS IT TURNED OUT, WE WERE XMITTING, BUT UNABLE TO RECEIVE ON EITHER RADIO EXCEPT INTERMITTENTLY. ZFW RELAYED DSCNT CLRNC THROUGH THE ONLY ACFT ON THE FREQ. AS WE DSNDED COMS BECAME MORE INTERMITTENT SO DECISION WAS MADE TO SQUAWK 7600 AND AS WE GOT TO LOWER ALTS SQUAWK WAS CHANGED TO 7700 TO INSURE CLR ARR SPACE. AT IAH WE FLEW TO THE VOR AND EXECUTED THE COMPLETE ILS 14L APCH. ON SHORT FINAL WE AGAIN MADE CONTACT WITH THE ACFT ON OUR FREQ AND HAD ZFW ASK IAH TWR FOR GREEN LNDG LIGHT. THE GREEN LIGHT WAS VISIBLE AT APPROX 3 MI BUT VERY DIFFICULT TO FIND AMONG ALL THE OTHER ARPT LIGHTS. WE COMPLETED A SAFE APCH AND LNDG AND TURNED THE ACFT OVER TO MAINT AT THE GATE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.