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KFYI Running IBOC
- Thread starter multiplex
- Start date
K
KeithE
Guest
> KFYI is now running IBOC, according to a DX report, and I've
> confirmed this. Very low modulation on main carrier, but
> surrounding noise huge.
> For those new to IBOC, it's not authorized yet for nighttime use.
Yep. Loud hash on 540 & 560 as I write this, and nothing on 530 & 570. Heard on my Walkman in Ahwahtukee.
> confirmed this. Very low modulation on main carrier, but
> surrounding noise huge.
> For those new to IBOC, it's not authorized yet for nighttime use.
Yep. Loud hash on 540 & 560 as I write this, and nothing on 530 & 570. Heard on my Walkman in Ahwahtukee.
> > KFYI is now running IBOC, according to a DX report, and
> I've
> > confirmed this. Very low modulation on main carrier, but
> > surrounding noise huge.
> > For those new to IBOC, it's not authorized yet for
> nighttime use.
>
> Yep. Loud hash on 540 & 560 as I write this, and nothing on
> 530 & 570. Heard on my Walkman in Ahwahtukee.
>
I know very little about IBOC. I assume this is why the shows now all sound like they're running ISDN even though they're in the studio? I'd love an explanation.
> I've
> > confirmed this. Very low modulation on main carrier, but
> > surrounding noise huge.
> > For those new to IBOC, it's not authorized yet for
> nighttime use.
>
> Yep. Loud hash on 540 & 560 as I write this, and nothing on
> 530 & 570. Heard on my Walkman in Ahwahtukee.
>
I know very little about IBOC. I assume this is why the shows now all sound like they're running ISDN even though they're in the studio? I'd love an explanation.
There are several factors involved here.
First of all, Clear Channel is especially backing policy changes that would limit bandwidth on non-music AM stations to 5kHz, and on music AM stations to 6kHz.
I gather from the reading I've done that such narrow bandwidth is necessary for IBOC stations.
One of the leading CC engineers is behind making this limited bandwidth mandatory for AM.
I hope it doesn't happen, but suspect it will.
But for now, KFYI is by far the worst-sounding station on the AM dial.
I think some non-CC AM stations may be choosing a less drastic bandwidth cut, but still, I believe the goal should be to make current AM sound better, not worse.
I used to have no problems getting Yuma's KBLU all day, but they're covered up by hash now.
I can hear small traces of hash all the way to 590 on a GE Superadio III, but a good signal can crash through it even on 570, which is better than earlier digital stations, where interference was reported 20 to 30 kHZ either side.
Still, even just monitoring the regular signal, there's only a very narrow sliver where you don't hear at least a trace of the hash along with KFYI's audio.
First of all, Clear Channel is especially backing policy changes that would limit bandwidth on non-music AM stations to 5kHz, and on music AM stations to 6kHz.
I gather from the reading I've done that such narrow bandwidth is necessary for IBOC stations.
One of the leading CC engineers is behind making this limited bandwidth mandatory for AM.
I hope it doesn't happen, but suspect it will.
But for now, KFYI is by far the worst-sounding station on the AM dial.
I think some non-CC AM stations may be choosing a less drastic bandwidth cut, but still, I believe the goal should be to make current AM sound better, not worse.
I used to have no problems getting Yuma's KBLU all day, but they're covered up by hash now.
I can hear small traces of hash all the way to 590 on a GE Superadio III, but a good signal can crash through it even on 570, which is better than earlier digital stations, where interference was reported 20 to 30 kHZ either side.
Still, even just monitoring the regular signal, there's only a very narrow sliver where you don't hear at least a trace of the hash along with KFYI's audio.
D
drtylawndre
Guest
studio audiance on barry young show now sounds fake
M
mr_carlson
Guest
> studio audiance on barry young show now sounds fake
>
The Religion of Peace update won't sound nearly as tight, either.
>
The Religion of Peace update won't sound nearly as tight, either.
O
oldiesfan
Guest
If you knew not to set your (non-atomic) watch
by KFYI before, you really don't want to now.
The CBS bong used to be :07 late--with KFYI
always being in delay (even overnight during
"Coast To Coast UFOs")--today with IBOC turned
on during daytime hours I've noticed it being
:16-:18 late.
It has been stated in other threads that the
@#$% IBOC adds a delay of its own to the signal.
by KFYI before, you really don't want to now.
The CBS bong used to be :07 late--with KFYI
always being in delay (even overnight during
"Coast To Coast UFOs")--today with IBOC turned
on during daytime hours I've noticed it being
:16-:18 late.
It has been stated in other threads that the
@#$% IBOC adds a delay of its own to the signal.
> KFYI is now running IBOC, according to a DX report, and I've
> confirmed this. Very low modulation on main carrier, but
> surrounding noise huge.
> For those new to IBOC, it's not authorized yet for nighttime
> use.
>
For those of you wondering (like I was) what IBOC is, I found this at the C Crane website....
In a nutshell, IBOC is short for In-Band/On-Channel digital audio broadcasting (or IBOC DAB). Rather than getting into the technical jargon, suffice it to say, that IBOC is the technology agreed upon by the majority of radio broadcasters in the US for the transition of digital AM and FM radio broadcasts. IBOC differs from XM and Sirius satellite radio in that it is intended to work on the same bands that you already listen to. In other words, you don't have to pay a subscription to receive these broadcasts.
> confirmed this. Very low modulation on main carrier, but
> surrounding noise huge.
> For those new to IBOC, it's not authorized yet for nighttime
> use.
>
For those of you wondering (like I was) what IBOC is, I found this at the C Crane website....
In a nutshell, IBOC is short for In-Band/On-Channel digital audio broadcasting (or IBOC DAB). Rather than getting into the technical jargon, suffice it to say, that IBOC is the technology agreed upon by the majority of radio broadcasters in the US for the transition of digital AM and FM radio broadcasts. IBOC differs from XM and Sirius satellite radio in that it is intended to work on the same bands that you already listen to. In other words, you don't have to pay a subscription to receive these broadcasts.
> > studio audiance on barry young show now sounds fake
> >
> I'd say it now sounds extremely fake, instead of moderately
> fake before.
>
So just what is CC using the additional bandwidth for? I've surfed 540 and 560, not expecting to find anything and I didn't (except for garbled noise). Is the intent to put what amounts to another signal with its own content on adjoining freqs.? If so, may I assume this would be something with a different application not necessarily related to radio broadcasting?
> >
> I'd say it now sounds extremely fake, instead of moderately
> fake before.
>
So just what is CC using the additional bandwidth for? I've surfed 540 and 560, not expecting to find anything and I didn't (except for garbled noise). Is the intent to put what amounts to another signal with its own content on adjoining freqs.? If so, may I assume this would be something with a different application not necessarily related to radio broadcasting?
All of the above. I'm sure that right now you'd just find the digital equivalent of the AM signal, but the goal is to possibly make other programing/services available, both on digital AM and FM.
By the way, the name IBOC (for in-band on-channel) is a misnomer, since the very problem with it is that it's _not_ on-channel at all.
It's on the adjacent channel.
> surfed 540 and 560, not expecting to find anything and I
> didn't (except for garbled noise). Is the intent to put
> what amounts to another signal with its own content on
> adjoining freqs.? If so, may I assume this would be
> something with a different application not necessarily
> related to radio broadcasting?
>
By the way, the name IBOC (for in-band on-channel) is a misnomer, since the very problem with it is that it's _not_ on-channel at all.
It's on the adjacent channel.
> surfed 540 and 560, not expecting to find anything and I
> didn't (except for garbled noise). Is the intent to put
> what amounts to another signal with its own content on
> adjoining freqs.? If so, may I assume this would be
> something with a different application not necessarily
> related to radio broadcasting?
>
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