Radiosophy HD101 - The ultimate Radio Disney receiver

[Len14043]

I wonder what you'r going to do when the Shortwave bands are all full of IBUZ? Because it's starting already.

Are you saying that AM IBOC hash is putting harmonics onto the shortwave bands? If so - YIKES! - that is going to raise quite a few international objections! Or are shortwave stations experimenting with the Ibiquity system. Given the 5 kHs shortwave channel allotments, IBOC would be even worse than it is in the United States!

I believe shortwave is experimenting with DRM which, from what I read and heard, is superior to IBOC.

 

[Dighton Rockhead]

From what I understand, the Europeans are now working on a version of DRM for the VHF frequencies.

If they succeed, and assuming the new Philips chip and its immitators and successors is used in the new 'multi digital format' receivers, this would make for the ultimate in freedom of choice for the FM broadcaster.

An FM broadcaster would have the ability to choose which digital format to transmit in. If the Europeans were smart about this, they would offer DRM FM equipment at at rate which undercuts Ibiquity.

A price war for the broadcasting equipment certainly couldn't hurt.

 

[clouseau]

A price war for the broadcasting equipment certainly couldn't hurt.

Ain't that the truth.

Clouseau

 

[CW]

I wonder what you'r going to do when the Shortwave bands are all full of IBUZ? Because it's starting already.

Are you saying that AM IBOC hash is putting harmonics onto the shortwave bands? If so - YIKES! - that is going to raise quite a few international objections! Or are shortwave stations experimenting with the Ibiquity system. Given the 5 kHs shortwave channel allotments, IBOC would be even worse than it is in the United States!

I believe shortwave is experimenting with DRM which, from what I read and heard, is superior to IBOC.

There is no IBOC use on the SW bands that I know of..Yes, DRM IS and HAS been used on the SW bands from Europe for some time. Continental showed a demo of DRM at NAB Las Vegas some years ago...from a transmitter in GA....They had 15 kHz wide stereo and none of the issues with IBOC. To me, IBOC is a monopoly and I thought that was illegal in the US now???

 

[RadioFixerCLE]

DRM would instantly obsolete all analog radios in existence - I think it's a digital-only system. At least with HD-IBOC, you can tune in your favorite stations normally.

 

[CW]

DRM would instantly obsolete all analog radios in existence - I think it's a digital-only system. At least with HD-IBOC, you can tune in your favorite stations normally.

DRM WAS designed as an all digital....BUT they have been doing hybrid mode for some time (Almost anything would be better on AM than the buzz saw of IBOC, even AM Stereo but NOT CAM-D ..

http://www.rwonline.com/reference-room/guywire/gw-08-28-03.shtml#postscript
http://www.drm.org/broadcastmanual/summarytable2.php

 

[SUPERCASTER]

The proposed HD radio 10db increase in power throws out the whole idea of HD radio "fitting into" the former analog adjacent channel mask. HD radio rarely could be made to fit the former analog mask, measurement methods were especially changed for HD, and recently the old analog mask was replaced by the altered new HD radio mask. If the 10db power increase is approved, the mask will be changed again.

The undeniable answer is:
No, HD radio does not fit the old analog mask.

 

[Dighton Rockhead]

DRM WAS designed as an all digital....BUT they have been doing hybrid mode for some time (Almost anything would be better on AM than the buzz saw of IBOC, even AM Stereo but NOT CAM-D ..
http://www.rwonline.com/reference-room/guywire/gw-08-28-03.shtml#postscript
http://www.drm.org/broadcastmanual/summarytable2.php

FM IBOC as presently implemented seems to work reasonably well, and will likely work much better as soon as that 10db increase in injection levels comes along. Even IBOC's most ardent detractors will have to come to the realization that, at the very least, the FM version is here to stay.

That being said, I still don't think it's too late to try to do something to rescue AM. Sadly, IBOC has been a disappointment, and doesn't seem to be the answer, especially for smaller operations.

If the Europeans really do have a workable hybrid version of DRM for AM, then I would enthusiastically support its swift implementation. The open-source nature of DRM would be of tremendous benefit to the 'mom and pops' and stand-alone operations.

Without something for AM that actually works well, the 'short-waving' of the band won't end with the imminent shopping spree being planned by the ministry of Joel Osteen for big AM's in the big metros.