[BC] WPGC/WHFS/WNEW

[Tom McGinley]

From: peterh5322 at rattlebrain.com
>Reportedly, CBS's D.C. talker on 1580 has a 317C which is still on its
>original set of finals. >>I have no idea if they are still on the first set of tubes, but I
really doubt it.<
 
CBS Radio's 1580 AM facility has indeed been running a 317C2/3 with the original PA tubes since 1985.  It's been running daytime hours at 52.6 kW DA-D since then. A Harris SX-1 runs the DA-N. I installed the transmitters and left DC in 2000. Roger Dufault, the longtime and very capable RF site engineer continues to maintain the 317 with the same tubes. The tubes have lasted this long because of good filament voltage management and a high velocity air exhaust system. But the rig is soon to be replaced by a rebuilt Harris DX50.
 
tm