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#5
July 10th 06, 06:34 PM
posted to rec.radio.shortwave
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This Really Sucks
"Doug Smith W9WI" wrote in message ... wrote: - Agree.. ANY way of filtering this out ? Buy a HD radio. Seriously. The Boston Acoustics Receptor HD, when tuning *analog* stations, seems largely immune to IBOC QRM from *digital* stations on adjacent frequencies. The set uses digital signal processing of analog signals; I might guess that it uses the opposite digital sideband to cancel out the one that's interfering with the desired analog station. In general, my experience has been that the Receptor HD is a pretty decent analog radio, both AM and FM, if you give it a decent antenna. (the antennas provided with the radio are crap) Of course, it is pretty expensive as well! Of course, the problem for the radio industry is that almost nobody *has* a Receptor HD - when the interference cranks up, people will buy XM or Sirius, put in a CD, or turn on the TV long before they'll buy a HD radio. I doubt many people will buy IBOC radios for the presumed audio advantages. The market for high fidelity AM has always been small and FM can sound excellent as it is. However, there probably will be some public interest in the secondary FM channels. And ibiquity's licensing arrangement demands that any AM - FM radio must have IBOC decoders for both bands. There won't be any standard AM - IBOC FM radios, at least according to the current plan. So, in the future, there's a good chance there will be a significant number of IBOC radios out there. I pretty much expect the AM broadcasters to enthusisastically jump into IBOC AM, just like as jumped into AM stereo. AM stereo never caught on. The buying public never much cared to buy the radios. AM stereo came and went. It would be ironic if the only way to avoid the IBOC sidebands is to buy some damned ibiquity licensed radio. Frank Dresser |
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