ZDC CTLR VOICED CONCERN REGARDING CONTINUING RADIO PROBLEMS AT SBV22 SECTOR.

Narrative

OJT WAS BEING CONDUCTED ON S BOSTON (SBV22) AT THE TIME AND THE ACFT WAS ON FREQ 124.05 AT THE TIME. DUE TO POOR OR NON EXISTENT FREQ COVERAGE; THE SECTOR WAS ALSO USING A BORROW ULTRA HIGH SECTOR FREQ 134.62. ACFT X WAS ON A VECTOR FOR THE ILS RWY 2 AT DANVILLE (DAN) MUNICIPAL ARPT. WHEN THE ACFT REACHED 15 MI SE OF DAN THE CTLR TRIED TO GIVE THE ACFT A TURN AND ALT CLRNC TO INTERCEPT THE LOC. THE ACFT NEVER RESPONDED TO ANY INSTRUCTION; AS WELL AS ATTEMPTS TO HAVE THE ACFT 'IDENT' IF IT HEARD THE CTLR WITH NO RESPONSE. THE CTLR WAS ALSO EXPERIENCING NUMEROUS PROBS WITH BOTH FREQS FROM OTHER ACFT. ANOTHER ACFT WAS USED TO RELAY TO ACFT X TO VECTOR TO THE ILS AND PLACE THE ACFT ON 134.62. THIS FREQ WAS STILL VERY POOR FOR MOST ACFT; AND IT TOOK SEVERAL XMISSIONS TO ISSUE CLRNCS. THESE FREQS HAVE BEEN WRITTEN UP NUMEROUS TIMES. TO DATE THERE HAS BEEN NOTHING TO RESOLVE THE ISSUES WITH THESE FREQS AND IF THEY ARE NOT RESOLVED AS THEY HAVE WORSENED; THIS COULD RESULT IN A FATAL SITUATION.