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Old January 4th 10, 06:37 PM posted to rec.radio.shortwave
IanT IanT is offline
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First recorded activity by RadioBanter: Dec 2009
Posts: 16
Default Major BMW HD Radio Problems - LOL!


"HD Radio Farce" wrote in message
...
"For those of you with HD Radios, for the last week or so, when the HD
signal kicks in, the output is very choppy. This is true for all
stations, AM or FM. Attached is an mp3 file which explains."

"this same problem just started today for me as well, anyone has any
thoughts what is happening? regular radio works fine, its just when i
switch on HD, it gets all choppy"

"Dealer could not fix. Submitted a PUMA case."


Laughing... laughing... LMFAO!


What is "HD Radio"? Are they confusing it for DAB radio? If so I wouldn't
confuse DAB with higher quality FM stereo!
FM stereo transmissions sound far better than low bitrate DAB stations.
It sounds interesting if the radio picks up say RADIO1 and then hunts for
a local DAB multiplex providing the same station and switches over.
I would keep well away from DAB until the bitrate is higher and stations
such as talkSPORT are transmitted in stereo. A lot of music stations are
also mono, so how this can be "HD" with a low bitrate is anyones guess.
At the moment there is no such thing as "HD Radio" in the UK, only AM/
FM(stereo) and DAB. Anything else and it has been incorrectly sold.
The problem is with the aerial base fitted to the BMW. It has a preamp
and bandpass filters for 510-1610KHz, 88-108MHz only. So DAB
which fits in around 170-220MHz is filtered out and the signal reduced.
This is why the signal is a fraction of what it should be and why the radio
station goes in and out! Nothing to do with the radio, just the incorrect
aerial base, preamp and filtering. Easy mistake for BMW to make.
There is currently no such thing as HD Radio in the UK! If you compared
FM stereo and a low bitrate mono DAB automated music station with
adverts, then people would pick FM stereo every time - for the superior
quality, dynamic range and stereo seperation.
DAB is only as good as a strong MW station.