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Re: [IRCA] WBZ IBOC is OFF!
- Subject: Re: [IRCA] WBZ IBOC is OFF!
- From: "Paul B. Walker, Jr." <walkerbroadcasting@xxxxxxxxx>
- Date: Sun, 4 Jan 2009 20:19:14 -0600
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I think WBZ runs or at least can run AM Stereo on the backup.
Paul Walker
www.onairdj.com
On 1/4/09, Patrick Griffith, N0NNK / WPE9HVW <AM-DXer@xxxxxxxxx> wrote:
>
> Still on the backup rig tonight, but they've drifted down a bit, to
> 1030.014.
> Barry
>
> ///////
> Just out of curiosity I wonder if WBZ runs Power-Side on the backup
> transmitter? I know a lot of stations that had Power-Side before IBOC
> came along kept it on their backup rigs (KPOF/910 for example). Perhaps
> I should pose this as a question to the more technically experienced
> engineer types on the list (Mark Durenberger where are you?). Since
> Power-Side concentrates the audio into one of the two sidebands of the
> carrier frequency, would that make the signal appear to be slightly off
> frequency toward whichever sideband is being used? I know that on an
> analog radio receiving a station using Power-Side you get the best sound
> by tuning slightly off frequency to one sideband or another. The carrier
> frequency should not be effected by Power-Side. But I believe that the
> apparent center of bandwidth for the overall mask of the transmitted
> signal would be shifted one way or another. At KCKK/1510 we have
> Power-Side and we run it slanted toward the lower sideband to help us
> stay further away from the audio of the 1520 adjacent channel blowtorch
> in OKC.
>
> Patrick Griffith, CBT CBNT CRO
> Westminster CO
> http://community.webtv.net/AM-DXer/
> http://community.webtv.net/N0NNK/
>
>
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--
Sincerely,
Paul B. Walker, Jr.
www.onairdj.com
walkerbroadcasting@xxxxxxxxx
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