Yep!
Steve
> -----Original Message-----
> From: Porter, Allen [mailto:PorterA@convergent.com]
> Sent: Monday, July 17, 2006 8:33 AM
> To: CRTech
> Subject: RE: [CRTech] satellite ebno woes
>
>
> "Truck" fade! Or "backhoe" fade.
>
> Allen Porter
> Network Systems Engineering
> Office: 770.369.9663
> Cell: 678.984.3577
>
>
>
> One Convergent Center
> 190 Bluegrass Valley Pkwy
> Alpharetta, GA 30005
> 770.369.9000
> www.convergent.com
>
>
>
>
> -----Original Message-----
> From: Steve Runck [mailto:steverunck@kfnw.org]
> Sent: Monday, July 17, 2006 9:32 AM
> To: 'CRTech'
> Subject: RE: [CRTech] satellite ebno woes
>
> Either that or somebody backed into the dish with their pickup! ;)
>
> Steve Runck
> Staff Engineer
> KFNW AM-FM, Fargo, ND
> 701-282-5910, Ext. 235
> steverunck@kfnw.org
> Audio Streams at <http://www.kfnw.org>
>
>
>
> > -----Original Message-----
> > From: Porter, Allen [mailto:PorterA@convergent.com]
> > Sent: Monday, July 17, 2006 7:40 AM
> > To: CRTech
> > Subject: RE: [CRTech] satellite ebno woes
> >
> >
> > I can imagine a situation where the pol was never correct yet
> > no carrier of sufficient strength and/or bandwidth was
> > present on the other side so you had no troubles. A new
> > carrier is put up on the opposite pol that now is bleeding
> > over on you. Just idle speculation but I have seen this
> > exact situation many times before.
> >
> >
> >
> > Allen Porter
> > Network Systems Engineering
> > Office: 770.369.9663
> > Cell: 678.984.3577
> >
> >
> >
> > One Convergent Center
> > 190 Bluegrass Valley Pkwy
> > Alpharetta, GA 30005
> > 770.369.9000
> > www.convergent.com
> >
> >
> >
> >
> > -----Original Message-----
> > From: BILL TIDWELL [mailto:bill@waft.org]
> > Sent: Sunday, July 16, 2006 12:08 AM
> > To: CRTech
> > Subject: Re: [CRTech] satellite ebno woes
> >
> > By adjusting the polarization I was able to go from 5.1 to
> 9.8 on the
> > EBNo's. I just can't imagine why it would start acting up
> after this
> > many years of running fine.
> >
> > Thanks for everyone's help.
> >
> > Bill Tidwell
> >
> >
> >
> >
> >
> >
> > Jerry Mathis wrote:
> > > On 7/13/06, Steve Runck <steverunck@kfnw.org> wrote:
> > >>
> > >> So things were humming along fine, and then all of a
> > sudden you started
> > >> losing signal? If so, I wouldn't throw the TI angle out
> > too quickly
> > >> but,
> > >> of
> > >> course, a spectrum analyzer would remove a lot of the
> > guesswork. I will
> > >> say
> > >> that in this day of multiple potential sources of
> interference, I
> > >> consider
> > >> a
> > >> TI filter to be standard equipment on my satellite dishes.
> > >>
> > >> Steve Runck
> > >> Staff Engineer
> > >> KFNW AM-FM, Fargo, ND
> > >> 701-282-5910, Ext. 235
> > >> steverunck@kfnw.org
> > >> Audio Streams at <http://www.kfnw.org>
> > >>
> > >>
> > >>
> > >> > -----Original Message-----
> > >> > From: BILL TIDWELL [mailto:bill@waft.org]
> > >> > Sent: Wednesday, July 12, 2006 11:01 PM
> > >> > To: CRTech
> > >> > Subject: [CRTech] satellite ebno woes
> > >> >
> > >> >
> > >> > I'm currently pulling my hair out over a satellite problem.
> > >> > I have an
> > >> > ABR202 receiver on Galaxy 4 (I think) and the EBNo is down to
> > >> > 6 and the
> > >> > sync light is flashing and getting dropouts about 4/minute.
> > >> > I checked
> > >> > alignment, replaced the receiver, changed the LNB, and
> > made sure the
> > >> > cable was OK. No bugs or water and it has a pretty
> > clear shot with a
> > >> > 3.7 meter dish. The last thing I'm going to try is an
> > >> > attenuator, but I
> > >> > kinda doubt it will work. Symptoms haven't changed with
> > any of the
> > >> > above. The new LNB is a 20 degree, 60 db gain, 5 khz stable
> > >> > osc. I set
> > >> > the M0 setting down to 2.0 so the unit is more tolerant of
> > >> > low EbNo's
> > >> > before dropout, but I need to find the real problem. Someone
> > >> > I talked
> > >> > to didn't think much of my TI hypothesis. Is it spectrum
> > >> > analyzer time?
> > >> >
> > >> > Bill Tidwell
> > >> > WAFT
> > >> >
> > >> > playing engineer for WAYR in Brunswick Ga. at this time.
> > >> >
> > >> >
> >
> ---------------------------------------------------------------------
> > >> > For CRTech resources visit http://CRTech.org/
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> > >> > List problems? E-mail: TechStaff@CRTech.org
> > >> >
> > >> >
> > >>
> > >>
> > >>
> >
> ---------------------------------------------------------------------
> > >> For CRTech resources visit http://CRTech.org/
> > >> To unsubscribe, e-mail: crtech-unsubscribe@crtech.org
> > >> List problems? E-mail: TechStaff@CRTech.org
> > >>
> > >>
> > >
> > > Two things I have found will make a radical difference in
> > your Eb Nos:
> > >
> > > 1. Are you using an old Chapparel motorized feedhorn? Dump
> > that sucker
> > > and
> > > get a single port single polarity (assuming you're not
> > using the dish for
> > > multiple feeds) feedhorn and put that on the dish. You
> > might have to get
> > > creative with the mechanical mounting, and you might need
> > the adapter
> > > plate
> > > they sell separately to mount the feedhorn.
> > >
> > > 2. When you install the new feedhorn (and if you don't,
> then check
> > > this with
> > > the existing feedhorn), check the focal point adjustment.
> This is a
> > > commonly
> > > overlooked adjustment. I don't have the formula in front of me to
> > > calculate
> > > it, but I or someone can post it if you need it. If you
> > have the dish
> > > maker's specs, they should list it. When you have the distance,
> > > measure from
> > > the bottom of the dish (the bottom of the "bowl", that is)
> > to about 1/4"
> > > INSIDE the feedhorn. Again, you may have to get creative with the
> > > mechanical
> > > mounting of the feedhorn to get this properly set.
> > >
> > > I suspect this may be your problem. With the focal point
> improperly
> > > set, you
> > > are picking up both adjacent satellite signals, and
> you're probably
> > > getting
> > > interference from an adjacent satellite.
> > >
> > > By following the steps above, I increased the Eb on a
> signal we use
> > > from 10
> > > to 14. YMMV.
> > >
> > >
> > --------------------------------------------------------------
> > ----------
> > >
> > > No virus found in this incoming message.
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> > > Version: 7.1.394 / Virus Database: 268.9.10/387 - Release
> > Date: 7/12/2006
> > >
> >
> >
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> >
> >
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> >
>
>
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