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General Category => General Radio Discussion => Topic started by: NJQA on March 12, 2019, 0040 UTC

Title: DRM Handbook
Post by: NJQA on March 12, 2019, 0040 UTC
Update to the DRM Technical Handbook:

https://www.radioworld.com/global/digital-radio-mondiale-releases-updated-handbook

https://www.drm.org/wp-content/uploads/2019/02/DRM-Handbook.pdf

Title: Re: DRM Handbook
Post by: JimIO on March 12, 2019, 0346 UTC
DRM, ATSC 3.0, 5G, Fusion Power. It's the future, and always will be.    8)
Title: Re: DRM Handbook
Post by: Josh on March 12, 2019, 1837 UTC
Analog forever!
Title: Re: DRM Handbook
Post by: JimIO on March 12, 2019, 2130 UTC
Nothing wrong with digital, but who needs hip-hop in AAC or Sebastian Gorka in 4K!
Title: Re: DRM Handbook
Post by: redhat on March 12, 2019, 2251 UTC
I have no problem with a robust digital means of transmission.  What I do have a problem with is a system that is no better than the analog it replaced.  In most cases when the digital is no longer listenable, the analog usually is.

+-RH
Title: Re: DRM Handbook
Post by: Josh on March 12, 2019, 2256 UTC
I have no problem with a robust digital means of transmission.  What I do have a problem with is a system that is no better than the analog it replaced.  In most cases when the digital is no longer listenable, the analog usually is.

+-RH


My points are thus; no graceful decay of service, and the plethora of competing and sometimes proprietary standards.
Title: Re: DRM Handbook
Post by: redhat on March 12, 2019, 2347 UTC
Agreed.  You want stereo, add another $2K for codec licensing.  No thanks.

+-RH
Title: Re: DRM Handbook
Post by: ChrisSmolinski on March 13, 2019, 1227 UTC
I've never quite understood what problem DRM solves.
Title: Re: DRM Handbook
Post by: Josh on March 13, 2019, 1930 UTC
Also the lack of inexpensive drm rx boxen for the masses of South America and Africa who still listen to swbc who were the alleged targets for drm. A drm chip and ancillaries is hardly going to be as inexpensive as a diode am rectifier.

All that said, I feel the same way about HAM v/uhf dmr digital voice. I've listened to drm and it does have nice audio but it's based on STANAG 4285 as I recall, and 4285 isn't a weak signal mode either unless run in the 75Bd waveform.
Title: Re: DRM Handbook
Post by: BoomboxDX on March 19, 2019, 1620 UTC
I also never understood DRM's appeal. It would be different if a lot of SW radios had it as an option during the great SW radio boom of the 80's-00's, but that ship has sailed.

I understand DRM is being used fairly successfully in India, as they are slowly replacing their domestic MW network with DRM, and there are actually Indian-made DRM capable MW radios available as well.
Title: Re: DRM Handbook
Post by: Josh on March 19, 2019, 2221 UTC
There's a much longer tradition in India for people in government to just come out and say this is how it's going to be, and they get away with it. Forcing everyone to buy new ambc radios is just one effort, removing the most popular bills from currency was another.

In contrast, it was bad enough they forced everyone to get new tv sets/tuners in the US for the new digi standard, I don't think forcing am and fm listeners to buy new radios would have gone over well. I never knew how much I missed out being unable to see zits and/or boogers of the stars of stage and screen before.
Title: Re: DRM Handbook
Post by: MDK2 on March 21, 2019, 1413 UTC
In contrast, it was bad enough they forced everyone to get new tv sets/tuners in the US for the new digi standard, I don't think forcing am and fm listeners to buy new radios would have gone over well. I never knew how much I missed out being unable to see zits and/or boogers of the stars of stage and screen before.

Forced? Americans are all too happy to throw out the old for the latest and greatest flashy toy, no matter how well the old tech works and regardless of the drawbacks of the new. Anyone who got rid of vinyl LPs and replaced them with CDs were a prime example. With digital TV, at least they gave out vouchers to get a converter box for those who needed one (like myself at the time). Anyway, wait for 5k TV when you'll be able to smell their breath and sweaty pits.