I was scanning the frequencies that were formerly used for analogue VHF Television 174-216MHz. This range is still reserved by Industry Canada for broadcast purposes, but what I find odd is that the frequencies on there seems like it is mirroring overlapped FM radio stations from 76MHz-108MHz. The channels are about 170kHz wide and can be tuned in using SDR in WFM mode.
189.2MHz for example mirrors both FM 88.1 and FM 101.1, so you hear both radio stations at the same time, and adjacent stations like 101.1 seems to be bleeding across to other channels. If you tune 88.1 or 101.1 there is about a 1 to 2 second delay before it gets "mirrored" over onto 189.2MHz.
The range of 181-210MHz is where all the broadcasts lie. I attached a screenshot of a portion of this spectrum.
What in the world would such a broadcast system be used for?
189.2MHz for example mirrors both FM 88.1 and FM 101.1, so you hear both radio stations at the same time, and adjacent stations like 101.1 seems to be bleeding across to other channels. If you tune 88.1 or 101.1 there is about a 1 to 2 second delay before it gets "mirrored" over onto 189.2MHz.
The range of 181-210MHz is where all the broadcasts lie. I attached a screenshot of a portion of this spectrum.
What in the world would such a broadcast system be used for?