Noticed that 690 and 710 had IBOC hash and sure enough, my HD radio showed HD again for WLW.
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WLW turned IBLOCK back on
- Thread starter Buckeyes2001
- Start date
Did they give any reason why it's back?
R
rbrucecarter5
Guest
They obviously don't care about building penetration in the Cincinnati area, or about coverage in the suburbs on cheap radios.
I have a more sinister theory, but I won't mention it. Who was the respected radio person who said that IBOC was legalized jamming? I recommend that no one mention when IBOC is turned off on a station, as it alerts the authorities that support it to get it back on.
How often has it been that just when we think a station has dropped IBOC permanently, they turn it back on? I live in an area that currently has at least a dozen useable first adjacent signals blocked by sidebands. When you count the main channel that is about 1/7 of the AM band. The FM is worse as far as blocked signals. AMs are packed at 0.5/0.5 mV/m first adjacent, not the newer 0.5/0.25 first adjacent, on which interference levels were set. Also, FMs are nearly all short spaced with first adjacents is the most populated areas of the country. Often listenable adjacents that were listenable before no longer are listenable on FM also. It makes even a McIntosh MR-78 or MR-80 obsolete.
How often has it been that just when we think a station has dropped IBOC permanently, they turn it back on? I live in an area that currently has at least a dozen useable first adjacent signals blocked by sidebands. When you count the main channel that is about 1/7 of the AM band. The FM is worse as far as blocked signals. AMs are packed at 0.5/0.5 mV/m first adjacent, not the newer 0.5/0.25 first adjacent, on which interference levels were set. Also, FMs are nearly all short spaced with first adjacents is the most populated areas of the country. Often listenable adjacents that were listenable before no longer are listenable on FM also. It makes even a McIntosh MR-78 or MR-80 obsolete.
R
rbrucecarter5
Guest
Schroedingers Cat said:
Let's try the theory: HD is off on WOAI. OK, guys, go get WOAI to turn it back on.
Well, at least Chicago AM stands as a pretty good example of droppage.
Only 620 ( Milw), 780, 1390, and 1690 continue to spew forth.
The nature of ionospheric "saturation" from solar radiation is what supresses AM in daytime.
Its effect, as AM is propogated and decoded, is exactly the same as the wideband "outside the mask"
rf real power that becomes part of the sum total at rectification.
This is why I have always maintaned that iboc makes even the most immense-sounding 50 kw AM sound like
a 1kw daytimer over in the next county's county seat on a December day.
The truly competing AM stations gave it up quite a while ago as an audio embarassment.
Only 620 ( Milw), 780, 1390, and 1690 continue to spew forth.
The nature of ionospheric "saturation" from solar radiation is what supresses AM in daytime.
Its effect, as AM is propogated and decoded, is exactly the same as the wideband "outside the mask"
rf real power that becomes part of the sum total at rectification.
This is why I have always maintaned that iboc makes even the most immense-sounding 50 kw AM sound like
a 1kw daytimer over in the next county's county seat on a December day.
The truly competing AM stations gave it up quite a while ago as an audio embarassment.
It's really killing reception of CKGM 690 here in Ottawa at night. That station is pretty much a local here, and now I have to position the radio just right to hear it at night. I imagine since Canadians don't know about iboc, those that were listening here in Ottawa probably aren't any more.
Of course I know it'll never happen, but I was recently thinking that stations that EVER run IBOC, or have ever used it, should forever forfeit their rights to protections ... I was even thinking maybe to the point that as long as the "interfering" station's 0.1 µV/m-0.01% skywave contour overlaps at least one millimeter on the earth's surface of what would be the IBOC station's same contour if they ran the same TPO non-directional as the highest ERP main lobe, and their carrier is within 30 kHz + modulation bandwidth of the IBOC station's main analog carrier, then even if they were unlicensed they would escape prosecution or FCC shutdown raids. 
(Substitute the above field for whatever would be the minimum signal necessary for QRSS CW or PSK31 detection (but still too weak to ID) in an environment as quiet as a screen room, and only as often as a few tenths of a second once every other solar cycle.)
Even with IBOC, though, I was able one early morning about two and a half years ago to dig out 594 JOAK just 8 miles from local 600 KOGO and their IBOC. http://www.mediafire.com/download.php?4dqx65cf85glo83
(Substitute the above field for whatever would be the minimum signal necessary for QRSS CW or PSK31 detection (but still too weak to ID) in an environment as quiet as a screen room, and only as often as a few tenths of a second once every other solar cycle.)Even with IBOC, though, I was able one early morning about two and a half years ago to dig out 594 JOAK just 8 miles from local 600 KOGO and their IBOC.
http://www.mediafire.com/download.php?4dqx65cf85glo83
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