[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [IRCA] IBOC Hash AM vs FM OT question
Thanks Russ. So then it does look like I am too far to get the HD hash. That pleases me as reports from FM DXers in Urban areas stated that FM DX is nearly useless with the number of locals and add to that the HD hash. It seems a lot of urban stations run HD. Here I do not have any locally and none of the Portland stations even show the HD logo. They are too weak. Seattle does, and it varies from time to time how many I get to lock in HD. FM IBOC hash is a lot different than AM hash. Too bad AM is not the same. It would make DXing easier.
Patrick
Patrick Martin
Seaside OR
KGED QSL Manager
> Date: Mon, 18 May 2015 07:13:38 -0400
> From: wb2bjh@xxxxxxxxx
> To: irca@xxxxxxxxxxxxxxxx
> Subject: Re: [IRCA] IBOC Hash AM vs FM OT question
>
> Typically, the IBOC hash on FM won't make it as far as you're talking
> about, Patrick. I find that I can drive west and I will lose the hash on
> the adjacents well before I start to have trouble with the ( analog, since
> I don't have HD capability ) readability on the primary. Others who have
> the Sonys report that the filtering remove a lot of it anyway - they can
> usually hear stations adjacent to those having IBOC unless they have the
> antenna aimed too close.
>
> Russ Edmunds
> 15 mi NW Phila
> Grid FN20id
> <wb2bjh@xxxxxxxxx>
>
> AM: Modified Sony ICF2010's (2) barefoot w/whip
> FM: Yamaha T-80 & T-85, each w/ Conrad RDS Decoder;
> Onkyo T-450RDS; Tecsun PL-310 ( 2);
> modified Sony ICF2010 w/APS9B @ 15';
> Grundig G8 w/whip; modified Sony ICF2010 w/whip
>
>
> On Mon, May 18, 2015 at 4:50 AM, Mike Hawkins <michael.d.hawkins@xxxxxxxxx>
> wrote:
>
> > I don't get hash on distant FM stations, but there really isn't hash at
> > all. Its a blanking of adjacents. You have to remember too that they are
> > using lower power for the digital components. If they up the power, you'll
> > get the full force of the signal.
> >
> > They try to convince us that this is the future of radio, but the last
> > thing I want is to know whether Rush Limbaugh is wheezing. AM is sports or
> > conservative talk. FM is I-Heart-Monopoly. If it weren't for skip, I
> > would listen exclusively to the all-news station until I got bored with
> > it. Outside of the DX groups, I don't even know anyone who listens to
> > radio anymore. I know nobody who even owns a HD radio. They have had
> > years to get one, so where are they. I think the only thing that HD radio
> > has really accomplished is to lose all of the non-locals and semi-locals in
> > the noise left behind by the artifacts.
> >
> > The fidelity doesn't matter if the choices are non-existent. Elvis left
> > the building years ago.
> >
> > Mike
> >
> > On Mon, May 18, 2015 at 1:11 AM, Patrick Martin <mwdxer@xxxxxxxxx> wrote:
> >
> > > Thanks Mike. It sounds like, at least in your case, the FM IBOC noise is
> > > an issue if on a local station. Do you get any IBOC FM Hash on distant
> > > stations? As I mentioned, even the powerful 88.1 from Newport down the
> > > coast, it is stable and I get both channels FM1 & FM2, yet on 88.3 I
> > hear a
> > > mix of Portland and some translator. I have compared a non-IBOC near an
> > > IBOC, both distant signals and I do not notice anything different. The
> > hash
> > > must be wiped out at some distance then. I am glad we have no IBOC
> > locally.
> > > At least for now. Our stations for the most part have little money, so I
> > > doubt we will get any soon. Two stations do run RDS though. KFMY 99.7 I
> > > never detected the RDS before I got the FM6 up. The other is KOAC FM 89.7
> > > and they are strong in RDS.
> > >
> > > Patrick Martin
> > > Seaside OR
> > > KGED QSL Manager
> > >
> > > > Date: Mon, 18 May 2015 00:57:49 -0700
> > > > From: michael.d.hawkins@xxxxxxxxx
> > > > To: irca@xxxxxxxxxxxxxxxx
> > > > Subject: Re: [IRCA] IBOC Hash AM vs FM OT question
> > > >
> > > > To me, FM IBOC is like bacon sizzling as its cooking. It not as
> > > obnoxious
> > > > as it is on AM, but it has the same effect. As an example, 97.3 in San
> > > > Francisco (xmtr 20 or so miles away) runs IBOC. It does not have
> > obvious
> > > > artifacts on adjacent channels. If they turn it off (as they sometimes
> > > > do), I immediately have a strong signal from Visalia CA (200 miles
> > away)
> > > > and a RDS readout. I don't get RDS on 97.5, but I also get a strong
> > > signal
> > > > from 97.5 in Merced about 130 miles away. Its effect is as bad on FM
> > as
> > > it
> > > > is on AM. You just don't notice how bad it really is until you can do
> > an
> > > > IBOC on/IBOC off comparison.
> > > >
> > > > I have a college station on 91.1 that uses HD 1 mile away from me. I
> > > > cannot get the Sacramento powerhouse on 90.9 until I am 15-20 miles
> > away,
> > > > and if I hear anything at all on 91.3, I know its skip. The Stockton
> > > > station on 91.3 NEVER comes in at all.
> > > >
> > > > Mike Hawkins
> > > >
> > > > On Mon, May 18, 2015 at 12:33 AM, Patrick Martin <mwdxer@xxxxxxxxx>
> > > wrote:
> > > >
> > > > > This is a bit off tropic, but I know some of you DX FM at times. I
> > just
> > > > > got an FM6 yagi up and I am very impressed with the Sony XFR radio.
> > > Between
> > > > > the filters and sensitivity, it leaves my old Pioneer TX9100 in the
> > > dust
> > > > > (1970s). Anyway, out here on the Northern Oregon Coast we have no AM
> > > or FM
> > > > > HD stations. The nearest are Newport (100 miles), Portland (75
> > miles),
> > > or
> > > > > Seattle (130 miles). I have received several FM stations in HD. A few
> > > stay
> > > > > locked and others come and go. But so far I have not detected any
> > hash
> > > on
> > > > > adjacent frequencies. None. The tuner is very selective and
> > sensitive.
> > > I
> > > > > can easily get weak stations next to locals without any splash. The
> > HD
> > > > > signals like 95.7 Seattle, I can easily get 95.9 Bay City OR, and so
> > > on. AM
> > > > > IBOC hash is horrible as we all know and covers great distances. Off
> > > the
> > > > > Eastern Beverage I have heard IBOC hash from the Midwest at night..
> > But
> > > so
> > > > > far nothing on FM. This is my first shot at hearing FM HD. One thing
> > I
> > > will
> > > > > say, the FM dial is sure a l
> > > > > ot different than it was 20 years ago. Translators all over the
> > place
> > > > > along with some LPFMs. By the way, I do find FM HD to be touchy, as I
> > > get
> > > > > nothing in HD from Portland over the Coast range, not even a flashing
> > > HD
> > > > > symbol. But Seattle from Cougar & Tiger Mountains come in much
> > > stronger. I
> > > > > have even caught several with their sub channels. But does FM IBOC
> > hash
> > > > > cause as much noise locally? It sure does not carry very far. I
> > cannot
> > > wait
> > > > > for my first E Skip as I might get a taste of "local" sounding
> > station
> > > in
> > > > > HD. Thanks.
> > > > >
> > > > > Patrick
> > > > >
> > > > >
> > > > > Patrick Martin
> > > > > Seaside OR
> > > > > KGED QSL Manager
> > > > > _______________________________________________
> > > > > IRCA mailing list
> > > > > IRCA@xxxxxxxxxxxxxxxx
> > > > > 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@xxxxxxxxxxxxxxxx
> > > > >
> > > > >
> > > > _______________________________________________
> > > > IRCA mailing list
> > > > IRCA@xxxxxxxxxxxxxxxx
> > > > 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@xxxxxxxxxxxxxxxx
> > > >
> > >
> > > _______________________________________________
> > > IRCA mailing list
> > > IRCA@xxxxxxxxxxxxxxxx
> > > 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@xxxxxxxxxxxxxxxx
> > >
> > >
> > _______________________________________________
> > IRCA mailing list
> > IRCA@xxxxxxxxxxxxxxxx
> > 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@xxxxxxxxxxxxxxxx
> >
> >
> _______________________________________________
> IRCA mailing list
> IRCA@xxxxxxxxxxxxxxxx
> 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@xxxxxxxxxxxxxxxx
>
_______________________________________________
IRCA mailing list
IRCA@xxxxxxxxxxxxxxxx
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@xxxxxxxxxxxxxxxx