Because WTCM had a limited reach, Biederman wanted to start other small stations aimed exclusively towards the towns they broadcast in.
Big changes came to WTCM and the rest of the Paul Bunyan Network in the 1960s when the Federal Communications Commission (FCC) allowed local channel stations to increase their daytime power to 1,000 watts.
In 1977, former WCCW afternoon host Lin McNett ("Michael O'Shea") became WTCM's program director and morning personality.
Because of FCC restrictions and WTCM's growth plans, several properties were sold, including the Petoskey and Cadillac stations (to MacDonald Broadcasting, founded by long-time Biederman broadcaster Kenneth MacDonald) and the Gaylord station was sold to William Barr, but fell silent several owners later in the early 2000s, due to financial troubles.
In the 1990s, Ross Biederman purchased or erected several stations in other northern markets, and designed them to rebroadcast the Traverse City signals.
The 93.5 frequency began broadcasting in 1978, and originally programmed a stand-alone country format as WCLX (with the calls standing for nearby Charlevoix).
WKJF has since been donated to the same ministry that received the original 1400 signal, Good News Media (which changed the calls to WLJW in March 2004, and has since used it to simulcast WLJN).
Also, in the 1990s, Biederman purchased WCCW (AM) 1310 (then standards from ABC's "Stardust" network, now sports from ESPN Radio) and FM 107.5 (oldies), which had been WTCM's primary local competitor in the "early days" after being founded by a former Midwestern employee, John Anderson, in 1960.
The building also houses Ross Biederman's other properties, WCCW-AM-FM (along with recent sign-on WCZW-FM 107.9 Charlevoix, which simulcasts WCCW-FM "Oldies 107-5") and Top 40 WJZQ 92.9 FM (Z93).