Join Date: Apr 2009
Location: Toronto (St. Clair/Bathurst)
About Ibiqity sidebands and CHKX 94.7 Hamilton (antenna is Stoney Creek)
William at the "DX Info Center" sent some very valuable information to me.
All over the US, as predicted, the sidebands of Ibiqity stations is playing havoc with near neighbours - such as our cherished PBS WNED 94.5 in Buffalo. He sent a 'scope shot showing the horror or the sidebands.
This can not be corrected with a notch filter on 94.7 because the sidebands miss the notch as much as does the station its 94.5.
He suggested I turn my 10 foot yagi antenna so that Stoney Creek is at a 90-degree null. Based on the polar chart for a big yagi, i thought this just might work.
Yesterday, "Dr. Antenna" was at my house (mostly substituting a TV HD DB4e for previous ChannelMaster 422X and much improvement). I can't praise Chris (the good doctor) and Carlisle, his colleague enough. They are truly competent professionals and nice to deal with too.
From my home, the CN Tower, PBS FM and other Buffalo stations are all in a straight line. Stoney Creek maybe 20 degrees off (and roughly 40 miles with WNED-FM twice that). To summarize, we couldn't find an angle for the yagi that gathered enough signal from 94.5 and also discriminated against 94.7 to any useful degree. Sad, sad, sad.
Despite using a golden-age Sony tuner (SA50ES) with a narrow IF setting and an antenna attenuator switch (and capable of getting an OK quality sound from WNED), just zilch from WNED FM now. The 94.7 Ibiqity sidebands sit squarely on top of 94.5.
The essential problems are: Ibiqity causes problems to adjacent stations and federal (and international) regulators are not getting off their backsides to help.
Grand Is.(TV ant),BostonNY(FM ant),CN Tower,all in 2 deg; 4221, 60ftRG6, 8dB distr amp
SonyHD-FM, Wine.6065, 40ftRG6