HD Radio increasing FM adjacent channel digital noise

[OhioMediaWatch]

Oh, the space-before-exclamation point thing was a joke. Some folks seem to think it is needed(space)!

 

[autopaint-1]

Was your radio in wide band mode? I hear nothing from the IBOC sidebands on my superradio 3. Maybe I should record a demo and post it here.

 

[SayNoToIBOC]

autopaint-1 wrote: "What rules? The moderator allows this nonesense to go on for weeks. This was an HD radio board. We've talked about everything but except to spend time defending HD's right to exist.. As I stated earlier, there may be two people at most who post under different names repeating the same linked anti IBOC mantra. WABC is running IBOC in NYC. I listened today on both my Receptor in HD and a Sperradio in analogue and tuned correctly. There was no trace of the IBOC sidebands heard on the superradio. I didn't try the radio in wideband mode. No other commercial radio which people use in their car or their homes has that kind of wide band filtering anyway."

You need to go on vacation - oh, I forgot, you already are on vacation ! You are losing it - more than one person posting, under different names - LAUGHABLE ! As I said, there are more anti-IBOC folks out there, than you want to admit ! Now, go enjoy your vacation ! Well, if you don't like the posts, then don't get involved !

BTW, if you don't believe that HD/IBOC causes adjacent-channel interference, the go check out Google rec.radio.shortwave (oh, according to David, I mean Usenet), and check out all the happy folks there !

 

[OhioMediaWatch]

Was your radio in wide band mode? I hear nothing from the IBOC sidebands on my superradio 3. Maybe I should record a demo and post it here.

The SR3 was in narrow band mode.

It was possible to tune "in between" the sidebands, but they are there. Again, I'm talking AM (WTAM/1100 Cleveland) here...since the topic is FM on this thread, I repeat that I haven't heard any adjacent channel noise on any of the local IBOC-equipped FMs. Most of the big signal FMs in Cleveland are now running IBOC. The SR wide/narrow band switch is only for AM.

As far as AM goes, I haven't done a study, but if the IBOC carrier is off at night, the adjacent channel stuff isn't an issue. I can usually pick out KMOX/1120 St. Louis from the edge of WTAM here at night, and it's a 50KWer just 15 miles north of where I sit. I imagine if the IBOC was on at night, that would go away.

 

[SayNoToIBOC]

OhioMediaWatch wrote: "Yes, As far as AM goes, I haven't done a study, but if the IBOC carrier is off at night, the adjacent channel stuff isn't an issue. I can usually pick out KMOX/1120 St. Louis from the edge of WTAM here at night, and it's a 50KWer just 15 miles north of where I sit. I imagine if the IBOC was on at night, that would go away."

You are so right - here are two links, to back that up:

http://www.wbdhradio.com/html/say_no_to_iboc.html
http://beradio.com/features/radio_running_interference/

 

[davideduardo]

OhioMediaWatch wrote: "Yes, As far as AM goes, I haven't done a study, but if the IBOC carrier is off at night, the adjacent channel stuff isn't an issue. I can usually pick out KMOX/1120 St. Louis from the edge of WTAM here at night, and it's a 50KWer just 15 miles north of where I sit. I imagine if the IBOC was on at night, that would go away."

You are so right - here are two links, to back that up:

http://www.wbdhradio.com/html/say_no_to_iboc.html
http://beradio.com/features/radio_running_interference/

The industry point made by the users of HD is: WTAM has no interest in being heard 15 miles from St Louis. So they have gone HD, and KMOX will be HD, and neither will consider that they have lost anything.

 

[SayNoToIBOC]

no HD/IBOC radios = no consumer interest

Funny, you didn't address the adjacent-channel interference issues with AM, and even on FM !

 

[OhioMediaWatch]

The industry point made by the users of HD is: WTAM has no interest in being heard 15 miles from St Louis. So they have gone HD, and KMOX will be HD, and neither will consider that they have lost anything.

And as someone who knows the workings of radio well, I agree with you - though I would personally miss being able to hear KMOX and other near-adjacent-to-local stations at night on the AM band. I also don't believe any technology which camps on adjacent channels is a good idea, even if the radio "business works" means it doesn't mean much other than affecting those of us who do listen to out-of-town stations occasionally.

But that's mostly nostalgia. If I really have a desire to hear KMOX here in Ohio, they now stream their signal in much better quality via the Internet. If someone in St. Louis wants to hear WTAM, ditto.

There are still some things that I believe (as a layman/non-engineer) need to be worked out with the IBOC AM adjacent-channel issue, which is one reason that the technology is not being used on a widespread basis at night. But overall, the "we can listen to late night radio from out of town under the covers" issue is more romantic than practical.

 

[autopaint-1]

"Funny, you didn't address the adjacent-channel interference issues with AM, and even on FM !"

I'll address it. Using the Boston Acoustics HD I don't have adjecent channel interference issues any greater than a Non IBOC radio has when listening to analogue weak signals next to their local station. I've posted the demos before. With DSP the interference isn't too bad. That's not what you wanted to hear I'm sure.

 

[SayNoToIBOC]

I have two suggestions:

1) go over to rec.radio.shortwave and see many opions, to the contrary.
2) read this link, from RWOnline:

http://rwonline.com/reference-room/iboc/03_rwrf_feb_16_part_2.shtml

 

[autopaint-1]

"I have two suggestions:"


I have a few suggestions as well. I am not interested in reading news groups. I am happy with my IBOC radio and all the new programing I'm getting for free. I don't need to read the opinions of people who are upset that their analogue radios might become expensive doorstops.

 

[SayNoToIBOC]

Sorry, these are no newsgroups, these are professionally written articles. And, I am no longer worried that my analog radio will become a doorstop - looks like HD radios will !

 

[IBOCRocks]

Sorry, these are no newsgroups, these are professionally written articles. And, I am no longer worried that my analog radio will become a doorstop - looks like HD radios will !

Sure, looking through your eyes. Fortunately, you're wrong.

 

[SayNoToIBOC]

Another, useless rebuttal...

 

[IBOCRocks]

Another, useless rebuttal...

I was going to do what you do. Post a bunch of links to other people who say that you're wrong, but I figure at this point it isn't necessary.

As for whether or not you like my rebuttal? Think however you'd like, my friend! 'Tis a free country, and you are certainly entitled to your opinion.

 

[SayNoToIBOC]

Another useless rebuttal...

 

[IBOCRocks]

Another useless rebuttal...

Fortunately I don't care what you think.

Why so angry? Don't like getting schooled?

At any rate, every post you make lessens the need for any rebuttal from me. At this point, it's just comical. It brightens my day to read your rants!

 

[SayNoToIBOC]

Am I angry - quote something, of mine, that sounds angry. If my posts lessen the need for your rebuttals, then why do you constantly rebut my posts ?

 

[IBOCRocks]

Am I angry - quote something, of mine, that sounds angry. If my posts lessen the need for your rebuttals, then why do you constantly rebut my posts ?

Because the more you type, the less intelligent you sound.

Give someone enough rope, etc.

Now, are you going to reply with "Blah blah blah" like you did to another poster?

Sounds angry to me...

 

[SayNoToIBOC]

Actually, "Blah... Blah... Blah...", is indicative of being bored, with these responses - they are desparate and wrote. Boring !