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View Full Version : How not to process an HD Radio signal



k6sti
12-02-2009, 12:03 PM
 
 

gccradioscience
04-08-2010, 06:21 PM
I tried the link, and it does not work. I understand where this is coming from. I cannot receive WCWM on 90.9 because of the unnecessary college radio station using HD radio and is not doing any multicasting on their station. They are just broadcasting in HD-1 that is about it and the digital sidebands are blocking out 90.9 and 91.3 MHz DX windows.

k6sti
04-09-2010, 11:18 AM
I recently removed the writeup. It was not about HD sidebands blocking adjacent channels, but about the HD audio quality, which was seriously degraded by improper levels to the transmit audio processor and nonflat transmit equalization. The station recently made some changes. While the audio is still overly compressed and bassy, it no longer reminds me of an AM station. Voices no longer pump. I'd be embarrassed to put the current signal on the air myself, but it is no longer grossly defective and my original writeup was no longer accurate.

While the following refers to another station's analog signal rather than to HD, you might appreciate it. The audio quality of this signal has not improved since I originally wrote about it last year:

http://ham-radio.com/k6sti/kpbs.htm

Brian