PLT OF A GOV CESSNA 172 LOST 2 RADIO COMS DUE TO AN ELECTRICAL PROB WHILE ATTEMPTING TO LAND AT A CTLED ARPT. THE RPTR MONITORED THE TWR FOR LIGHT SIGNALS; BUT SEEING NONE HE CONTINUED HIS APCH TO LAND UNTIL ANOTHER TWIN ENG ACFT TOOK THE RWY FOR TKOF. RPTR MADE A GAR AND DEPARTED THE AREA.

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DEPARTED RDG ON A FLT TO PNE. CALLED NXX FOR TRANSITION BUT COULD NOT UNDERSTAND THEM. ADVISED NXX THAT I WOULD STAY CLR TO THE W AND S. I WAS FOLLOWING ANOTHER ACFT UNTIL I LOST HIM CLOSE TO PNE. I ENTERED A L DOWNWIND FOR RWY 33 LOOKING FOR LIGHT SIGNALS FROM THE TWR. I DID NOT SEE ANY SIGNALS AND CONTINUED DOWNWIND. WHEN I WAS ABOUT TO TURN L BASE I SAW ANOTHER ACFT TURNING R BASE SO I EXTENDED MY DOWNWIND. I THEN TURNED L BASE AND FINAL ALWAYS LOOKING AT TWR FOR ANY LIGHT SIGNALS. I SAW NO SIGNALS AND ACTIVATED MY LNDG LIGHT SWITCH A FEW TIMES BUT THERE MUST NOT HAVE BEEN ENOUGH ELECTRICITY TO LIGHT IT. WHEN I WAS ABOUT 1/2 MI FINAL; A TWIN TOOK RWY 33 FOR DEP AND I DIVERTED TOWARDS THE RIVER; THEN TO THE N. I THEN PROCEEDED TO DYL; DOYLESTOWN; PA. WHILE ON THE GND AT PNE AND FEARING AN AIRSPACE VIOLATION I CALLED THE TWR. A CTLR ANSWERED AND SAID THEY WOULD HAVE TO GET THE CTLR THAT WAS ON DUTY AT THE TIME. A FEW MINS LATER A VOICE CAME ON AND I EXPLAINED THE ABOVE AND HE TOLD ME 'I DON'T HAVE A PROB WITH IT.