"Promptly the trio began to squabble, resorting to any device to make their chunk of time more profitable than their rivals'. Jam-packed with advertising, loaded with corny stuff, their programs brought little pleasure to the listening public"In 1928 they moved the station out to Long Island, probably trying to tap into a different set of local advertisers with the new call letters WCLB. It must not have gone so well because they let their license lapse and had to go get it back from the FRC in 1930. they promptly moved back to Pitkin avenue under the call letters WMIL on the new frequency of 1500. Then in 1933 WMIL changed call letters to WCNW. But this was yet another share time arrangement. On that frequency they were now sharing with WMBQ, WLBX and WWRL. It would all be sort of sorted out by 1941.
In 1936 The FCC improved the situation a bit (FCC superseded the FRC in 1934). It was in that year that WMBQ fell into receivership. the ugly share-time on 1500 Mhz got it's attention. Without WMBQ the share could be between only two stations, but who would get the newly available airtime? In it's ruminations the FCC found that WCNW could barely mange it's own operation. It's transmitter was wandering off its center frequency. The FCC granted WWRL sole right to the frequency; deleting both WMBQ and WCNW.
Faske sold the station to Elias Godofsky in 1941. They rapidly became a more ethnic radio station. By 1949 they'd dropped their classical programming and beefed up on Jewish and black oriented programs. At the time there were only 3 all black radio stations in the US: WERD, WEDR, and WMFS. if that gives you some context.