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WWJ sounds great right now! Full 10 kHz analog bandwidth!

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MWmetalhead
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WWJ sounds great right now! Full 10 kHz analog bandwidth!

Post by MWmetalhead » Sat Apr 11, 2020 9:29 am

I-BLOC has been off for a while, and until recently, analog bandwidth was still brickwalled at 5 kHz.

To my delight, this morning, WWJ is using a full 10 kHz!

The unsqueezed analog audio sounds BETTER than the decoded digital audio!!


Caroline Beasley is ruining WRIF. What a bitch!!!

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MWmetalhead
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Re: WWJ sounds great right now! Full 10 kHz analog bandwidth!

Post by MWmetalhead » Sat Apr 11, 2020 9:46 am

I-BLOC is also off at AM 1270!

AM 1500, which used to restrict bandwidth to 5 kHz (but never implemented IBOC), also seems to be broadcasting in wideband now.


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macgoldfan
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Re: WWJ sounds great right now! Full 10 kHz analog bandwidth!

Post by macgoldfan » Sat Apr 11, 2020 9:55 am

MWmetalhead wrote:I-BLOC has been off for a while, and until recently, analog bandwidth was still brickwalled at 5 kHz.

To my delight, this morning, WWJ is using a full 10 kHz!

The unsqueezed analog audio sounds BETTER than the decoded digital audio!!
Definitely better, I can actually pick up and listen to WWJ up here in South East St Clair county now without it fading in and out. I will try again after sun down and see I can still pick it up.

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audiophile
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Re: WWJ sounds great right now! Full 10 kHz analog bandwidth!

Post by audiophile » Sat Apr 11, 2020 11:01 am

MWmetalhead wrote:
Sat Apr 11, 2020 9:46 am
I-BLOC is also off at AM 1270!

AM 1500, which used to restrict bandwidth to 5 kHz (but never implemented IBOC), also seems to be broadcasting in wideband now.
There was a certain engineer that believed that restricting bandwidth to shortwave standards (5 kHz) made a the station get out farther. I find no evidence of that in any modern processor under normal conditions. In some respects it's the opposite - a very bright AM station with music masks the noise floor. A lot depends on how the input AGC reacts. In digital FM Optimods anything above 6 kHz did not cause gain reduction, it was simply clipped and filtered. On AM with a 10 kHz cutoff I would imagine the cutoff for the AGC would 5 kHz. They can filter the 2nd and 3rd harmonic so there is no THD, only IMD. IMD 5 kHz+ region isn't that easy to hear. Try it in Cool Edit, modulate a 100 Hz with 10 kHz on top with 3 dB of clipping,


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Re: WWJ sounds great right now! Full 10 kHz analog bandwidth!

Post by k8jd » Sat Apr 11, 2020 3:54 pm

I have a GE superradio that has a wide band AM for local high Quality reception, nice to hear music on AM that way (if any stations are still ldoing Music on AM ?) or I can switch to narrow IF for pulling out the weak DX from between stronger BIG stations.



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Re: WWJ sounds great right now! Full 10 kHz analog bandwidth!

Post by MWmetalhead » Sun Apr 12, 2020 7:56 am

WJR is still so damn LOUD! Have to turn down the volume three clicks to avoid my eardrums being blown out.

AM 800 has the opposite issue. I have to turn up the volume higher than all other stations to get to a comfortable listening level.

Would be nice if the jackasses running these stations would fix these issues.


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Re: WWJ sounds great right now! Full 10 kHz analog bandwidth!

Post by MWmetalhead » Sun Apr 12, 2020 8:06 am

Detroit area AM stations that mostly play music:
580
630
1030
1160
1310 (not sure that garbage can be called music)
1460
1480


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Re: WWJ sounds great right now! Full 10 kHz analog bandwidth!

Post by MWmetalhead » Sun Jun 21, 2020 4:35 pm

Not sure how long ago it happened - but another AM station in Detroit has turned off its I-BLOC hiss machine! :)

AM 1340 WCHB is now solely broadcasting in analog. The audio chain sounds nice and clean, but I do not believe this station is using a full 10 kHz of bandwidth. If I had to hazard a guess, I'd say they are using about 6 kHz.


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Re: WWJ sounds great right now! Full 10 kHz analog bandwidth!

Post by WOHO » Fri Jul 10, 2020 7:09 pm

630 CFCO still lights up the (AM) "STEREO" indicator on my 2001 Chrysler Car Radio and sounds pretty decent on day pattern/power. I believe that WION is also in Stereo AM and 10KHz frequency response.



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