AM HD TURNOFF PACE ACCELERATES

[Zach]

How would I go about turning it on and add the additional features?

Jeff in Sa-ra-so-ta!

No idea.  What little investigating I did turned up no information.

[KB1OKL]

"And then....it was 232."  McLarnon now reports WTAM Cleveland, 50kw news-talker, is IBOC-free 24-7.

www.topazdesigns.com/iboc/station-list.html

Good that's a good one.

[avtosalon]

Meanwhile in Chicago, Disney AM 1300 has dropped the hash for a while, at least.

Not only has 1300 WRDZ turned off it's 'AM HD' garbage, but so has co-owned 50,000 watt AM 1000 WMVP.

At present I count a total of 6 AM stations in the Chicago market who have done the smart thing and turned-off their HD noise:


AM 560   WIND   5,000 watts   Salem (was owned by Univision)   
AM 720   WGN   50,000 watts   Tribune
AM 890   WLS   50,000 watts   Citadel - now broadcasting in AM Stereo!
AM 1000   WMVP   50,000 watts   Disney
AM 1200   WRTO   20,000/4,500 watts   Univision
AM 1300   WRDZ   4,500/4,000 watts   Disney 


The only ones remaining with the noise are 2 stations owned by CBS (WSCR and WBBM) and 2 stations owned by Cheap Channel (WGRB and WVON).

[Savage]

The WIND notation is interesting.  I was under the impression Salem wasn't bothering with IBOC on any of its AMs.

[DavidEduardo]

The WIND notation is interesting.  I was under the impression Salem wasn't bothering with IBOC on any of its AMs.

They turned it off when they bought it from Univision because they had concerns that it was hurting the coverage of their 540 operation in metro Milwaukee.

[ddsparxx]

I have 4 AM stations in my area that quit using IBOC:

630 WMAL in DC
730 WXTR in Alexandria, VA (now WTNT)
980 WTEM ESPN in DC
1500 WFED in DC, when it was WTOP

[Zach]

6 stations off in Chicago, that's 12 more frequencies that have now "opened up" for sensitive radios to DX.  I hope the trend continues.

[mgpt6]

CC and CBS should put there AM  signals on HD3 FM.   AM HD does not work and only  causes interference to adjucents  WBZ is 50Kw and 20 miles away and can NOT get a steady lock on my Sony table radio.
One thing a will say about FM HD is that there is no L-R subcarrier noise while listening to HD program compared to analog FM. The late Peter Mitchell was right, you need a good out door antenna to receive perfectly quiet FM stereo.

[Zach]

L-R subcarrier noise.  What does that sound like? 

[DaveBayArea]

L-R subcarrier noise.  What does that sound like? 

That's the white noise you hear when you switch a radio from mono to stereo.  Most modern radios blend to mono to minimize it, but it's there on weak signals.  All of the additional noise in stereo is from the L-R subcarrier.

Dave B.