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WWFD 820 Becomes First All-Digital AM Station  View Printable Version 
Tuesday, July 17 2018

IRCA


On 7/17/2018 2:03 PM, Chuck Hutton wrote:


But I'm unaware as to whether all digital IBOC has FCC approval.

As a regular licensed mode of operation, no...which is exactly why
Hubbard and the HD Radio folks are conducting this test under
experimental authority.

I'm going to be interviewing WWFD's Dave Kolesar this evening for a new
episode of my "Top of the Tower" podcast, to be released tomorrow. If
anyone on the list has questions about the purpose of the test or the
technology behind it, hit me up and I'll ask him!

s

 

WWFD 820 Becomes First All-Digital AM Station  View Printable Version 
Tuesday, July 17 2018

IRCA
Is it?


Since they have no analog, there's no reason for them to use the hybrid mode of IBOC which has both analog and digital. That is what causes the interference to adjacent chanbnels and limits the IBOC coverage a bit.


If they use the all digital mode, there are different expectations for interference and coverage amd we'll have to re-analyze things.


But I'm unaware as to whether all digital IBOC has FCC approval.


Chuck

 

WWFD 820 Becomes First All-Digital AM Station  View Printable Version 
Tuesday, July 17 2018

IRCA


It's not WWFD 820; it's "WWFD 800--810--820--830--840"

:-))


Cheers!

Mark Durenberger, mobile


-----Original Message-----
From: Russ Johnson


Sent: Tuesday, July 17, 2018 8:46 AM
To: Mailing list for the International Radio Club of America
Subject: Re: [IRCA] WWFD 820 Becomes First All-Digital AM Station

Thanks for the update Brett

On Tue, Jul 17, 2018 at 9:31 AM Brett Saylor <bds2@psu.edu> wrote:


1500 WFED isn't on IBOC right now, and I don't recall it being on any time
recently. According to Barry's site it's been off since 2007.

I just checked my overnight recordings and 820 is solid IBOC hash from 815
to 825 kHz, from sunset to sunrise. I can get around most IBOC noise by
tuning the opposite LSB or USB but this covers the entire frequency. 820
is


now pretty useless as a nighttime frequency. Frederick is 100 miles from
here.


Brett Saylor
State College, PA

On Tue, Jul 17, 2018 at 9:02 AM, Russ Johnson <radiok3pi@gmail.com> wrote:

> Letâs hope so.
>
> I was unimpressed even with HD FM coverage. Too many drop outs.
>
> Is 1500 in DC still iboc?
>
> Russ Johnson
>
> Sent from my iPhone
>
> > On Jul 17, 2018, at 8:35 AM, Russ Edmunds <wb2bjh@gmail.com> wrote:
> >
> > There will now be just digital hash where the AM signal would have
been..
> > But the rush into this ignores some important points -
> >
> > 1. How many car radios are capable of receiving these transmissions ?
My
> > understanding was that carmakers were reducing, not increasing the HD
> > capability as standard equipment because it hadn't caught on.
> > 2. How many listeners are driven off by the low range AM signal -
> > which


> > will continue and perhaps be worse - and not by analog
> > 3. How many people actually listen on AM anyway and would this change
> them ?
> >
> > I predict this adventure will fail.
> >
> >
> > Russ Edmunds
> > 15 mi NW Phila
> > Grid FN20id
> > <wb2bjh@gmail.com>
> >
> > AM: Modified Sony ICF2010's (3) barefoot w/whip
> > FM: Yamaha T-80 & T-85, each w/ Conrad RDS Decoder;
> > Onkyo T-450RDS; Tecsun PL-310 ( 4); Sony XDRS3HD;
> > modified Sony ICF2010's (2) w/APS9B @ 15';
> > modified Sony ICF2010 w/whip
> >
> >
> >> On Mon, Jul 16, 2018 at 9:37 PM, Les Rayburn <les@highnoonfilm.com>
> wrote:
> >>
> >> Hereâs some news that Iâm not sure how to feel about:
> >>
> >> https://news.radio-online.com/cgi-bin/rol.exe/headline_id=n35675
> >>
> >>
> >>
> >>
> >> 73,
> >>
> >> Les Rayburn, N1LF
> >> 121 Mayfair Park
> >> Maylene, AL 35114
> >> EM63nf
> >>
> >> Member WTFDA, IRCA, NRC. Former CPC Chairman for NRC & IRCA.
> >>
> >> Elad FDM-S2 SDR, AirSpy SDR2, SDRPlay RSP-2 Pro, Sony XDR-F1HD [XDR
Guy
> >> Modified], Dennon TU-1500RD, Sangean HDT-1X, Ray Dees RDS Decoders,
> Korner
> >> 9.2 Antenna, FM-6 Antenna, Kitz Technologies KT-501 Pre-amps, Quantum
> >> Phaser, Wellbrook ALA1530 Loop, Wellbrook Flag, Clifton Labs Active
> Whip.
> >>
> >> âNothing but blues and Elvis, and somebody elseâs favorite songââ
> >>
> >>
> >> _______________________________________________
> >> IRCA mailing list
> >> IRCA@hard-core-dx.com
> >> http://montreal.kotalampi.com/mailman/listinfo/irca
> >>
> >> Opinions expressed in messages on this mailing list are those of the
> >> original contributors and do not necessarily reflect the opinion of
the
> >> IRCA, its editors, publishing staff, or officers
> >>
> >> For more information: http://www.ircaonline.org
> >>
> >> To Post a message: irca@hard-core-dx.com
> >>
> >>
> > _______________________________________________
> > IRCA mailing list
> > IRCA@hard-core-dx.com
> > http://montreal.kotalampi.com/mailman/listinfo/irca
> >
> > Opinions expressed in messages on this mailing list are those of the
> original contributors and do not necessarily reflect the opinion of the
> IRCA, its editors, publishing staff, or officers
> >
> > For more information: http://www.ircaonline.org
> >
> > To Post a message: irca@hard-core-dx.com
> >
> _______________________________________________
> IRCA mailing list
> IRCA@hard-core-dx.com
> http://montreal.kotalampi.com/mailman/listinfo/irca
>
> Opinions expressed in messages on this mailing list are those of the
> original contributors and do not necessarily reflect the opinion of the
> IRCA, its editors, publishing staff, or officers
>
> For more information: http://www.ircaonline.org
>
> To Post a message: irca@hard-core-dx.com
>
>

 

WWFD 820 Becomes First All-Digital AM Station  View Printable Version 
Tuesday, July 17 2018

IRCA
Is it?


Since they have no analog, there's no reason for them to use the hybrid mode of IBOC which has both analog and digital. That is what causes the interference to adjacent chanbnels and limits the IBOC coverage a bit.


If they use the all digital mode, there are different expectations for interference and coverage amd we'll have to re-analyze things.


But I'm unaware as to whether all digital IBOC has FCC approval.


Chuck

 

WWFD 820 Becomes First All-Digital AM Station  View Printable Version 
Tuesday, July 17 2018

IRCA
I think, as a DX'er and broadcaster.. HD would've been a bit more viable if
you could've gotten HD locking without needing such robust signals and find
a way to have it not interfere with other stations. I've heard HD on AM,
I've heard DRM on Shortwave.... I used to listen to Radio Kuwait 15540kzh
english DRM.. and the thing needed a paint peeling banging barrel of brick
signal to lock and stay locked. It sounds great though.

I don't particularly find any use for it on AM, except the sound quality.
Where HD has... i dont wanna use the word flourished.. but done better is
on FM, and even moreso tv.. where you can offer sub/side channels. Many
broadcasters, with pretty decent financial success have put translators on
their HD channels (look at Saga communications) and offered formats that
may not make financial sense on full powered signals.

Where HD i think really works, is TV.. with the multiple specialist
channels.

Anyways, I digress. I don't dislike HD as much as some here do, but I'm
huge a fan of it in general.. it has proved interesting while FM DXing
though

Paul

On Tue, Jul 17, 2018 at 12:29 PM, Les Rayburn <les@highnoonfilm.com> wrote:

> Russ,
>
> I agree with your prediction, but do want to play Devilâs Advocate. (Why
> the devil needs an advocate since his fan base is huge is beyond me, but I
> digress.)
>
> AM listenership within the DC market is high compared to most others.
> Traffic, news, and specialized political news formats dominate the market
> on both AM/FM.
>
> The metro area is very small geographically, and even with the reduced
> range, WWFD probably remains viable.
>
> HD radio remains in the majority of new cars (my wifeâs 2018 Ford F-150
> came with one as standard equipment) and DC is one of the most mobile
> markets in the country. Most people are listening in their cars. And most
> people in DC are driving newer cars, and making the payments.
>
> If it will work anywhere, it will work in DC.
>
> All that being said, itâs doomed.
>
> 73,
>
> Les Rayburn, N1LF
> 121 Mayfair Park
> Maylene, AL 35114
> EM63nf
>
> Member WTFDA, IRCA, NRC. Former CPC Chairman for NRC & IRCA.
>
> Elad FDM-S2 SDR, AirSpy SDR2, SDRPlay RSP-2 Pro, Sony XDR-F1HD [XDR Guy
> Modified], Dennon TU-1500RD, Sangean HDT-1X, Ray Dees RDS Decoders, Korner
> 9.2 Antenna, FM-6 Antenna, Kitz Technologies KT-501 Pre-amps, Quantum
> Phaser, Wellbrook ALA1530 Loop, Wellbrook Flag, Clifton Labs Active Whip.
>
> âNothing but blues and Elvis, and somebody elseâs favorite songââ
>
>
> > On Jul 17, 2018, at 7:35 AM, Russ Edmunds <wb2bjh@gmail.com> wrote:
> >
> > There will now be just digital hash where the AM signal would have been..
> > But the rush into this ignores some important points -
> >
> > 1. How many car radios are capable of receiving these transmissions ? My
> > understanding was that carmakers were reducing, not increasing the HD
> > capability as standard equipment because it hadn't caught on.
> > 2. How many listeners are driven off by the low range AM signal - which
> > will continue and perhaps be worse - and not by analog
> > 3. How many people actually listen on AM anyway and would this change
> them ?
> >
> > I predict this adventure will fail.
> >
> >
> > Russ Edmunds
> > 15 mi NW Phila
> > Grid FN20id
> > <wb2bjh@gmail.com>
> >
> > AM: Modified Sony ICF2010's (3) barefoot w/whip
> > FM: Yamaha T-80 & T-85, each w/ Conrad RDS Decoder;
> > Onkyo T-450RDS; Tecsun PL-310 ( 4); Sony XDRS3HD;
> > modified Sony ICF2010's (2) w/APS9B @ 15';
> > modified Sony ICF2010 w/whip
> >
> >
> > On Mon, Jul 16, 2018 at 9:37 PM, Les Rayburn <les@highnoonfilm.com>
> wrote:
> >
> >> Hereâs some news that Iâm not sure how to feel about:
> >>
> >> https://news.radio-online.com/cgi-bin/rol.exe/headline_id=n35675
> >>
> >>
> >>
> >>
> >> 73,
> >>
> >> Les Rayburn, N1LF
> >> 121 Mayfair Park
> >> Maylene, AL 35114
> >> EM63nf
> >>
> >> Member WTFDA, IRCA, NRC. Former CPC Chairman for NRC & IRCA.
> >>
> >> Elad FDM-S2 SDR, AirSpy SDR2, SDRPlay RSP-2 Pro, Sony XDR-F1HD [XDR Guy
> >> Modified], Dennon TU-1500RD, Sangean HDT-1X, Ray Dees RDS Decoders,
> Korner
> >> 9.2 Antenna, FM-6 Antenna, Kitz Technologies KT-501 Pre-amps, Quantum
> >> Phaser, Wellbrook ALA1530 Loop, Wellbrook Flag, Clifton Labs Active
> Whip.
> >>
> >> âNothing but blues and Elvis, and somebody elseâs favorite songââ
> >>
> >>
> >> _______________________________________________
> >> IRCA mailing list
> >> IRCA@hard-core-dx.com
> >> http://montreal.kotalampi.com/mailman/listinfo/irca
> >>
> >> Opinions expressed in messages on this mailing list are those of the
> >> original contributors and do not necessarily reflect the opinion of the
> >> IRCA, its editors, publishing staff, or officers
> >>
> >> For more information: http://www.ircaonline.org
> >>
> >> To Post a message: irca@hard-core-dx.com
> >>
> >>
> > _______________________________________________
> > IRCA mailing list
> > IRCA@hard-core-dx.com
> > http://montreal.kotalampi.com/mailman/listinfo/irca
> >
> > Opinions expressed in messages on this mailing list are those of the
> original contributors and do not necessarily reflect the opinion of the
> IRCA, its editors, publishing staff, or officers
> >
> > For more information: http://www.ircaonline.org
> >
> > To Post a message: irca@hard-core-dx.com
> >
>
> _______________________________________________
> IRCA mailing list
> IRCA@hard-core-dx.com
> http://montreal.kotalampi.com/mailman/listinfo/irca
>
> Opinions expressed in messages on this mailing list are those of the
> original contributors and do not necessarily reflect the opinion of the
> IRCA, its editors, publishing staff, or officers
>
> For more information: http://www.ircaonline.org
>
> To Post a message: irca@hard-core-dx.com
>
>

 

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