IBOC on FM…Just as
Inefficient!
Now that
In-Band, On Channel Digital Audio Broadcasting (IBOC-DAB), or low-definition
radio, has arrived on FM in
Bonneville
International: WIL-FM
92.3 St. Louis, MO WMVN 101.1 East St. Louis, IL WARH 106.5 Granite
City, IL
Clear Channel
Communications: KSD
93.7 St. Louis, MO KATZ-FM 100.3 Alton,
IL KLOU 103.3 St. Louis, MO KMJM 104.9 Columbia,
IL KSLZ 107.7 St. Louis, MO
Emmis Communications: KSHE 94.7 Crestwood, MO KFTK 97.1
Florissant, MO KPNT
105.7 Ste. Genevieve, MO
Radio One: WFUN-FM 95.5 Bethalto, IL
University of
Missouri-St. Louis: KWMU 90.7 St. Louis,
MO
CBS Radio: KYKY 98.1 St. Louis,
MO
This is more
proof that going digital is not a good idea for FM radio, either. Engineers who
are supportive of IBOC (and the logic is seriously questioned by the vast
majority of broadcast engineers) don’t seem to realize the damage they’re doing
to first and second adjacent channel signals. Digital signals will only be capable of audio quality below FM quality.
If you’ve ever made a cell phone call in a weak signal area…this is what IBOC
will sound like in weak signal areas. Speech and music will be unintelligible.
FM radio is already capable of multi-channel audio (it’s called Subsidiary
Communications Services, or SCS). In addition, stations broadcasting in “HD
Radio” have little or no Stereo separation on their analog signals. With no
market for IBOC in the United States, then it’s no wonder the logic of the
National Association of Broadcasters and the Corporation for Public
Broadcasting is fatally flawed in this area. Analog is the only way to preserve
the technical integrity of FM broadcasting.