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KGO's Crashing IBOC Mystery Solved

P

PocketRadio

KGO's Crashing IBOC Mystery Solved

"Turns out that KGO's mysteriously crashing IBOC is a known problem. The mechanism of failure is simple: system loses, then re-acquires GPS lock...and then it crashes. They all have this problem since it is yet another iBiquity feature as part of its entire House Of Cards design debacle. It's just another of those "secret" parts of the black box that has more bugs than Florida. The workaround: pull the GPS antenna jack off and never let the unit acquire GPS lock in the first place. End of problem, since apparently the GPS synchronization is superfluous anyway. iBiquity: Bad implementation of even worse ideas. I certainly hope iBiquity runs out of money soon so this nightmare can end."

http://tinyurl.com/27ddj6

Don't we all ! :D
 
Thank you for a most informative and relevant post.

"Need Global Positioning Data" , cannot continue broadcasting....another fine reason why computer and radios should not be mixed.

A great example of how the computer people "just don't get it" when it comes to analog and RF design.

Get the basic job done before you try to get fancy.
And to let a pie-in-the-sky feature ruin the reliability of the basic function is inexcusable.
 
"KGO IBOC EVEN INTERFERES WITH ITS OWN AM SIGNAL AT CENTER CHANNEL"

"Hi everyone, I have no idea if it is another test, or they kicked it on at 0600 PST this morning for good, but KGO's signal is really bad with this horrible hash behind the carrier right on 810. It sounds like a chainsaw behind Bernie Ward's God Talk. Now KEX does not have that chainsaw sound, even though they run IBOC. Of course KGO's hash knocks out most everything on 800 & 810 off the SW EWE. I can just imagine the number of calls KGO must be getting. The last time they ran the IBOC test after Midnight months ago, I called. This is unreal.[later:] They know about it. The first time I heard KGO testing IBOC, I called their CE and talked to him and they knew about the noise and many around the Bay area had called in asking what the terrible noise on their frequency was. Unless KGO can clean up the IBOC hash, they are going to lose listeners. It may be because of their directional pattern too. I have no clue, but I have heard directional patterns are tougher to set up with IBOC. But this noise will not do (Patrick Martin, Seaside OR, Feb 18, IRCA via DXLD)"

http://www.worldofradio.com/dxld7022.txt

"There’s a Downside to HD AM Radio: AM Will Sound Better But You May Not Be Able to Hear Long Distance Stations As Well"

"Brad, Have you heard how bad IBOC (IN-BAND ON-CHANNEL) audio makes the analog AM signal sound? Listen to the “white noise” in the background of KGO when they’re using HD or better yet, listen to the narrow-banded and restricted fidelity of KMJ 580 AM. The IBOC digital process destroys the fidelity of analog AM. Have you heard how awful KNEW and KABL sound - IBOC! But listen to am AM without IBOC (KSCO 1080, KLOK 1170, KNTS 1220 or KYA 1260) Note how much cleaner and clearer the audio is - notice the smoothness of the mid’s and the highs. IBOC/HD on AM is a disaster and will ultimately lead to the end of AM radio. KGO’s chief engineer has spent many hours dissecting and figuring out how to make his radio station sound listenable in analog while broadcasting in HD - he’s somewhat succeeded, but the IBOC has still tremendously degraded what was once one of the best sounding broadcast signals on AM or FM! And just wait until AM HD starts broadcasting at night - the entire band will be completely unlistenable. The level of interference on the dial will make it virtually impossible to listen to any radio other than the ones in your immediate vicinity. The level of interference will be so bad, that SJ listeners will only hear the most powerful (KNBR, KCBS, & KGO) SF AM stations in their homes at night. Everything will be a mish-mash of white noise, buzz and hum. What a tremendous improvement!!!"

http://tinyurl.com/3929od

You're welcome, Tom...
 
Speaking of HD-R interference, I wonder how much of it those who live along the border will have to endure should Mexico get its wish:

"Mexico ’s governmental regulator wants to let Mexican-licensed stations within 200 miles of the border start using iBiquity’s HD Radio system for digital – on a voluntary basis. iBiquity’s Bob Struble says there’s a “rapidly expanding list of countries around the world” using the U.S. technology to transition from analog to digital."

http://www.insideradio.com/default.asp

db
 
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