Today's Message Index:
----------------------
1. 08:56 AM - Grand Rapids Technologies ()
2. 09:16 AM - Re: Grand Rapids Technologies (Robert Borger)
3. 09:25 AM - Re: Grand Rapids Technologies (john Snapp)
4. 09:59 AM - Re: Grand Rapids Technologies (Tim Olson)
5. 10:00 AM - Re: Grand Rapids Technologies (Charlie England)
6. 11:15 AM - Re: Double Check Antenna Placement ()
7. 11:17 AM - Re: Grand Rapids Technologies ()
8. 12:15 PM - Re: Grand Rapids Technologies (Arthur Glaser)
9. 02:00 PM - Re: Double Check Antenna Placement (Kelly McMullen)
10. 02:31 PM - Re: Grand Rapids Technologies ()
11. 04:50 PM - Re: Double Check Antenna Placement ()
Message 1
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| Subject: | Grand Rapids Technologies |
Does anyone know why Grand Rapids Technologies website has been taken down?
Roger
Message 2
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| Subject: | Re: Grand Rapids Technologies |
The notice says that the domain name expired on 01/23/17 and is pending rene
wal.
Could be an oversight or could be something worse. Their phone system is st
ill up and I left a message. We'll see what happens.
Best regards,
Robert Borger, President
Geowhiziks & Doodlebugging, Inc.
Certified Petroleum Geophysicist AAPG#101
3705 Lynchburg Dr.
Corinth, TX 76208-5331
(C) 817-992-1117
Sent from my iPad
> On Jan 29, 2017, at 10:53, rnjcurtis@charter.net wrote:
>
> Does anyone know why Grand Rapids Technologies website has been taken down
?
>
> Roger
>
Message 3
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| Subject: | Re: Grand Rapids Technologies |
oops....somebody forgot to renew their domain.
> On Jan 29, 2017, at 8:53 AM, <rnjcurtis@charter.net> <rnjcurtis@charter.ne
t> wrote:
>
> Does anyone know why Grand Rapids Technologies website has been taken down
?
>
> Roger
>
Message 4
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| Subject: | Re: Grand Rapids Technologies |
I also left a message yesterday. Hopefully they get it renewed quickly.
Tim
> On Jan 29, 2017, at 11:14 AM, Robert Borger <rlborger@mac.com> wrote:
>
> The notice says that the domain name expired on 01/23/17 and is pending re
newal.
>
> Could be an oversight or could be something worse. Their phone system is s
till up and I left a message. We'll see what happens.
>
> Best regards,
> Robert Borger, President
> Geowhiziks & Doodlebugging, Inc.
> Certified Petroleum Geophysicist AAPG#101
> 3705 Lynchburg Dr.
> Corinth, TX 76208-5331
> (C) 817-992-1117
>
> Sent from my iPad
>
>> On Jan 29, 2017, at 10:53, rnjcurtis@charter.net wrote:
>>
>> Does anyone know why Grand Rapids Technologies website has been taken dow
n?
>>
>> Roger
>>
Message 5
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| Subject: | Re: Grand Rapids Technologies |
Rumor over on the VAF forum is that it's a renewal glitch.
On Sun, Jan 29, 2017 at 10:53 AM, <rnjcurtis@charter.net> wrote:
> Does anyone know why Grand Rapids Technologies website has been taken down?
>
>
> Roger
>
>
Message 6
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| Subject: | Double Check Antenna Placement |
The statement below is is somewhat misleading. Traffic data to 1090ES
participants is absolutely NOT limited because of bandwidth on 1090
mHz. Air-to-air broadcasts from other 1090ES-equipped participating
aircraft within line-of-sight range will be received directly by the
1090ES receiver. As for UAT traffic, the FAA's ground stations will
re-broadcast any UAT-only traffic data that is within the "hockey puck"
of airspace (3500 ft above and below, within 15 nm of the participating
aircraft).
Likewise, a participating UAT-only (978 mHz aircraft would ALSO receive
the full traffic picture, since it would directly receive the air-to-air
broadcasts from other UAT participants within line-of-sight range, and
the FAA ground stations would re-transmit all of the 1090ES traffic data
that falls within the "hockey puck" of airspace surrounding that
airplane.
So either way, ALL participating aircraft (those with ADS-B OUT
capability, whether UAT or ES) will receive ALL the pertinent TIS-B
traffic information for their airplane.
It is the FIS-B data (which includes METARS, TARs, NEXRAD, NOTAMs,
AIRMET, SIGMET, SUA, TFR, Winds & Temps Aloft, and PIREP data) that is
bandwidth intensive, and thus transmitted only over 978 mHz (UAT)
frequency. This is a LOT of data, and the FAA had concerns about
potential "bandwidth saturation" on the 1090ES frequency, especially
near high-volume airports, etc. Thus the ADS-B system was designed to
render the weather services only via the UAT (978 mHz) frequency.
But some (many?) of the 1090ES transceivers also have a built-in 978 mHz
receiver (no transmitter), while others rely on the use of separate
FIS-B receiver in the aircraft. Many "portable" receivers (Appareo
Stratus, Garmin GLO and GDL-39, Dual XGPS160, iLevil, and others)
receive both UAT and ES frequencies, and thus offer both TIS-B and FIS-B
data to their users.
Jim Parker
-------- Original Message --------
Subject: Re: AeroElectric-List: Double Check Antenna Placement
From: Kelly McMullen <kellym@aviating.com>
<kellym@aviating.com>
Understand that no 1090ES transponder can receive more than limited
traffic because there is not enough bandwidth available on that
frequency. To get full ADS-B In with traffic and weather, the unit needs
to receive both 1090ES and 978. If it only receives on 978 it will get
all the information, but you won't receive aircraft to aircraft traffic
from planes transmitting on 1090 ES. Dual frequency receivers are
becoming much more common, fortunately.
Message 7
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| Subject: | Grand Rapids Technologies |
It is working today, so whatever the issue, it must have been resolved
quickly.
Jim Parker
-------- Original Message --------
Subject: AeroElectric-List: Grand Rapids Technologies
From: <rnjcurtis@charter.net>
Does anyone know why Grand Rapids Technologies website has been taken
down?
Roger
Message 8
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| Subject: | Re: Grand Rapids Technologies |
I just got grt avionics without a problem
From: "jim@poogiebearranch.com" <jim@poogiebearranch.com>
To: aeroelectric-list@matronics.com
Sent: Sunday, January 29, 2017 1:14 PM
Subject: RE: AeroElectric-List: Grand Rapids Technologies
It is working today, so whatever the issue, it must have been resolved
quickly.
Jim Parker
-------- Original Message --------
Subject: AeroElectric-List: Grand Rapids Technologies
From: <rnjcurtis@charter.net>
Does anyone know why Grand Rapids Technologies website has been taken
down?
Roger
-
S -
WIKI -
-
=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
Message 9
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| Subject: | Re: Double Check Antenna Placement |
Traffic information on 1090ES IS limited. You only get air to air and
approach radar TIS-A. You do NOT get TIS B unless there is an additional
978 receiver built-in. It IS due to limited bandwidth.
Do you really want to only get air to air traffic when you are outside
of Class B areas? I call that limited.
On 1/29/2017 12:12 PM, jim@PoogieBearRanch.com wrote:
>
> The statement below is is somewhat misleading. Traffic data to 1090ES
> participants is absolutely NOT limited because of bandwidth on 1090
> mHz. Air-to-air broadcasts from other 1090ES-equipped participating
> aircraft within line-of-sight range will be received directly by the
> 1090ES receiver. As for UAT traffic, the FAA's ground stations will
> re-broadcast any UAT-only traffic data that is within the "hockey puck"
> of airspace (3500 ft above and below, within 15 nm of the participating
> aircraft).
>
> Likewise, a participating UAT-only (978 mHz aircraft would ALSO receive
> the full traffic picture, since it would directly receive the air-to-air
> broadcasts from other UAT participants within line-of-sight range, and
> the FAA ground stations would re-transmit all of the 1090ES traffic data
> that falls within the "hockey puck" of airspace surrounding that
> airplane.
>
> So either way, ALL participating aircraft (those with ADS-B OUT
> capability, whether UAT or ES) will receive ALL the pertinent TIS-B
> traffic information for their airplane.
>
> It is the FIS-B data (which includes METARS, TARs, NEXRAD, NOTAMs,
> AIRMET, SIGMET, SUA, TFR, Winds & Temps Aloft, and PIREP data) that is
> bandwidth intensive, and thus transmitted only over 978 mHz (UAT)
> frequency. This is a LOT of data, and the FAA had concerns about
> potential "bandwidth saturation" on the 1090ES frequency, especially
> near high-volume airports, etc. Thus the ADS-B system was designed to
> render the weather services only via the UAT (978 mHz) frequency.
>
> But some (many?) of the 1090ES transceivers also have a built-in 978 mHz
> receiver (no transmitter), while others rely on the use of separate
> FIS-B receiver in the aircraft. Many "portable" receivers (Appareo
> Stratus, Garmin GLO and GDL-39, Dual XGPS160, iLevil, and others)
> receive both UAT and ES frequencies, and thus offer both TIS-B and FIS-B
> data to their users.
>
> Jim Parker
>
>
> -------- Original Message --------
> Subject: Re: AeroElectric-List: Double Check Antenna Placement
> From: Kelly McMullen <kellym@aviating.com>
> Date: Sat, January 28, 2017 9:06 pm
> To: aeroelectric-list@matronics.com
>
> <kellym@aviating.com>
>
> Understand that no 1090ES transponder can receive more than limited
> traffic because there is not enough bandwidth available on that
> frequency. To get full ADS-B In with traffic and weather, the unit needs
>
> to receive both 1090ES and 978. If it only receives on 978 it will get
> all the information, but you won't receive aircraft to aircraft traffic
> from planes transmitting on 1090 ES. Dual frequency receivers are
> becoming much more common, fortunately.
>
>
Message 10
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| Subject: | Grand Rapids Technologies |
Yup!! It=99s back!!
Roger
From: Arthur Glaser
Sent: Sunday, January 29, 2017 3:17 PM
Subject: Re: AeroElectric-List: Grand Rapids Technologies
I just got grt avionics without a problem
From: "jim@poogiebearranch.com" <jim@poogiebearranch.com>
Sent: Sunday, January 29, 2017 1:14 PM
Subject: RE: AeroElectric-List: Grand Rapids Technologies
It is working today, so whatever the issue, it must have been resolved
quickly.
Jim Parker
Message 11
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| Subject: | Double Check Antenna Placement |
I beg to differ... In addition to the TIS-B data (sourced from the ATC
radar contacts), you're also getting the ADS-R rebroadcast of UAT
traffic, and the direct air-to-air broadcast of all the 1090ES traffic.
Here is some information that specifically explain how it works:
FAA's ADS-B website:
https://www.faa.gov/nextgen/equipadsb/ins_and_outs/
iPad Pilot News:
http://ipadpilotnews.com/2012/08/understanding-ads-b-traffic/
ForeFlight article:
https://support.foreflight.com/hc/en-us/articles/205482188-What-do-ADS-B-ADS-R-and-TIS-B-refer-to-when-displayed-with-a-traffic-target-
Jim Parker
-------- Original Message --------
Subject: Re: AeroElectric-List: Double Check Antenna Placement
From: Kelly McMullen <kellym@aviating.com>
<kellym@aviating.com>
Traffic information on 1090ES IS limited. You only get air to air and
approach radar TIS-A. You do NOT get TIS B unless there is an additional
978 receiver built-in. It IS due to limited bandwidth.
Do you really want to only get air to air traffic when you are outside
of Class B areas? I call that limited.
On 1/29/2017 12:12 PM, jim@PoogieBearRanch.com wrote:
>
> The statement below is is somewhat misleading. Traffic data to 1090ES
> participants is absolutely NOT limited because of bandwidth on 1090
> mHz. Air-to-air broadcasts from other 1090ES-equipped participating
> aircraft within line-of-sight range will be received directly by the
> 1090ES receiver. As for UAT traffic, the FAA's ground stations will
> re-broadcast any UAT-only traffic data that is within the "hockey puck"
> of airspace (3500 ft above and below, within 15 nm of the participating
> aircraft).
>
> Likewise, a participating UAT-only (978 mHz aircraft would ALSO receive
> the full traffic picture, since it would directly receive the air-to-air
> broadcasts from other UAT participants within line-of-sight range, and
> the FAA ground stations would re-transmit all of the 1090ES traffic data
> that falls within the "hockey puck" of airspace surrounding that
> airplane.
>
> So either way, ALL participating aircraft (those with ADS-B OUT
> capability, whether UAT or ES) will receive ALL the pertinent TIS-B
> traffic information for their airplane.
>
> It is the FIS-B data (which includes METARS, TARs, NEXRAD, NOTAMs,
> AIRMET, SIGMET, SUA, TFR, Winds & Temps Aloft, and PIREP data) that is
> bandwidth intensive, and thus transmitted only over 978 mHz (UAT)
> frequency. This is a LOT of data, and the FAA had concerns about
> potential "bandwidth saturation" on the 1090ES frequency, especially
> near high-volume airports, etc. Thus the ADS-B system was designed to
> render the weather services only via the UAT (978 mHz) frequency.
>
> But some (many?) of the 1090ES transceivers also have a built-in 978 mHz
> receiver (no transmitter), while others rely on the use of separate
> FIS-B receiver in the aircraft. Many "portable" receivers (Appareo
> Stratus, Garmin GLO and GDL-39, Dual XGPS160, iLevil, and others)
> receive both UAT and ES frequencies, and thus offer both TIS-B and FIS-B
> data to their users.
>
> Jim Parker
>
>
> -------- Original Message --------
> Subject: Re: AeroElectric-List: Double Check Antenna Placement
> From: Kelly McMullen <kellym@aviating.com>
> Date: Sat, January 28, 2017 9:06 pm
> To: aeroelectric-list@matronics.com
>
> <kellym@aviating.com>
>
> Understand that no 1090ES transponder can receive more than limited
> traffic because there is not enough bandwidth available on that
> frequency. To get full ADS-B In with traffic and weather, the unit needs
>
> to receive both 1090ES and 978. If it only receives on 978 it will get
> all the information, but you won't receive aircraft to aircraft traffic
> from planes transmitting on 1090 ES. Dual frequency receivers are
> becoming much more common, fortunately.
>
>
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