Re: [IRCA] IBOC Hash AM vs FM OT question

[Russ Edmunds <wb2bjh@xxxxxxxxx>]

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
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