airtraffic

Author Topic: Oceanic Clearance Delivery  (Read 1067 times)

Offline TonyToronto

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Oceanic Clearance Delivery
« on: June 22, 2019, 05:42:12 PM »
Can the kind soul(s) scanning Gander Centre include more frequencies and, especially, oceanic clearance delivery? This would be a great boon to VATSIM Oceanic ATC students. Thanks.



Offline 777lrf

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Re: Oceanic Clearance Delivery
« Reply #1 on: June 23, 2019, 11:32:05 AM »
Can the kind soul(s) scanning Gander Centre include more frequencies and, especially, oceanic clearance delivery? This would be a great boon to VATSIM Oceanic ATC students. Thanks.

Sometimes you can hear them on the CYYT feed

Offline wiedehopf

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Re: Oceanic Clearance Delivery
« Reply #2 on: June 23, 2019, 11:53:42 AM »
The ZNY JOBOC sector has quite some Oceanic clearances on it:

https://www.liveatc.net/search/?icao=zny

Offline JetScan1

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Re: Oceanic Clearance Delivery
« Reply #3 on: June 23, 2019, 12:40:50 PM »
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Sometimes you can hear them on the CYYT feed

The CYYT feed only monitors low altitude (FL280 and below) frequencies. So presumably you were only hearing this low traffic or aircraft on the ground.

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especially, oceanic clearance delivery?

Currently the only 2 feeds that Monitor Gander frequencies are located at CYYT and CYYR, however both are not in range of a Gander Oceanic Clearance Delivery transmitter. There used to be a LiveATC feed in CYQY (Sydney, NS) that was monitoring the Delivery frequency (119.425) but it has been long gone now. There are rumours someone might be trying to bring one back there ?

Speaking of trans Atlantic traffic, I would donate funds to get a dedicated feed in CYYT to monitor the Gander Radio frequencies that are used to assign HF frequencies (122.375 and 135.350), plus another one for the high altitude Center frequencies (125.075, 128.175, 132.050, 134.700).

I would also donate funds for additional feeds to split the high and low frequencies in both CYYR and CYFB. The low sectors are very busy at times and block out a lot of the high altitude traffic.

Offline 777lrf

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Re: Oceanic Clearance Delivery
« Reply #4 on: June 25, 2019, 12:52:38 PM »
Quote
Sometimes you can hear them on the CYYT feed

The CYYT feed only monitors low altitude (FL280 and below) frequencies. So presumably you were only hearing this low traffic or aircraft on the ground.

Quote
especially, oceanic clearance delivery?

Currently the only 2 feeds that Monitor Gander frequencies are located at CYYT and CYYR, however both are not in range of a Gander Oceanic Clearance Delivery transmitter. There used to be a LiveATC feed in CYQY (Sydney, NS) that was monitoring the Delivery frequency (119.425) but it has been long gone now. There are rumours someone might be trying to bring one back there ?

Speaking of trans Atlantic traffic, I would donate funds to get a dedicated feed in CYYT to monitor the Gander Radio frequencies that are used to assign HF frequencies (122.375 and 135.350), plus another one for the high altitude Center frequencies (125.075, 128.175, 132.050, 134.700).

I would also donate funds for additional feeds to split the high and low frequencies in both CYYR and CYFB. The low sectors are very busy at times and block out a lot of the high altitude traffic.

At certain times I have heard oceanic clr on CYYT for many passing jet aircrafts. Must have been a slow time and the controller gave clearances to all the aircrafts flying to Europe around the CYYT area.

Offline JetScan1

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Re: Oceanic Clearance Delivery
« Reply #5 on: June 25, 2019, 02:47:17 PM »
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At certain times I have heard oceanic clr on CYYT for many passing jet aircrafts. Must have been a slow time and the controller gave clearances to all the aircrafts flying to Europe around the CYYT area.

Yes, during the slow times the high controllers will issue Oceanic Clearances. It's just that the CYYT (St. John's) feed does not monitor the high altitude frequencies and they never combine them with the low sectors, at least I've never heard the high sectors on the CYYT feed ? Maybe they are adding them to the feed on occasion ? Or do you mean you are hearing this on the CYYR (Goose Bay) feed ? Which would make more sense. I ask because it would would be difficult to get the high controllers on the CYYT feed as the transmitters are quite a distance from the airport, so I'm just curious what you are hearing ? 

Offline TonyToronto

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Re: Oceanic Clearance Delivery
« Reply #6 on: June 26, 2019, 11:50:12 AM »
The feed to Gander Centre through Goose Bay seems to cover the transition to Oceanic for the northern part of the FIR. There are position estimates for EB flights, and transponder and altitude assignments for WB flights. Requests for an EB oceanic clearance are referred to a clearance frequency but sometimes you catch a confirmation. I haven’t tried the feed through St. John’s because it’s muddied with the FSS, Ground and Tower. It seems more likely to catch a complete clearance listening to Moncton Centre. Hearing anything of interest is getting harder as CPDLC use increases.

Offline JetScan1

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Re: Oceanic Clearance Delivery
« Reply #7 on: June 26, 2019, 09:04:58 PM »
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The feed to Gander Centre through Goose Bay seems to cover the transition to Oceanic for the northern part of the FIR.

During the off peak times it's common to hear all the southern sectors combined in as well, all the way down to the TALGO/BOBTU coastal fixes. I've never heard the far northern sectors, even on the overnight shift, nothing ever north of the AVUTI coastal fix.

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I haven’t tried the feed through St. John’s because it’s muddied with the FSS, Ground and Tower.

Like I say I've never heard any high altitude traffic on the CYYT feed.

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Hearing anything of interest is getting harder as CPDLC use increases.

FYI if it's of any use you can pick up a lot of these CPDLC Oceanic Clearances off the satradar24 site. You can search for them by entering "CLRNCE" in the box under "Data".

http://dev.satradar24.com/teste_jonis/#/database

eg:

2019-06-26 G-VIIJ
/YQXE4YA.CLX 0448 190626 CZQX CLRNCE 799
BAW18A CLRD TO EGLL VIA ALLRY
NAT V
ALLRY 51N050W 53N040W 55N030W 57N020W
PIKIL SOVED
FM ALLRY/0544 MNTN F400 M084
END OF MESSAGE

2019-06-26 N644UA
/YQXE4YA.OC1/CLX 0412 190626 CZQX
CLRNCE 760
UAL962 CLRD TO EDDT VIA
NEEKO
RANDOM ROUTE
54N050W 57N040W 60N030W
61N020W ATSIX AKIVO
FM NEEKO/0455 MNTN F350
M081
ATC/ROUTE AMENDMENT
END OF MESSAGE1CE3





Offline TonyToronto

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Re: Oceanic Clearance Delivery
« Reply #8 on: June 27, 2019, 07:52:26 PM »
Very interesting and helpful. Do you happen to know the appreviation at satradar24 for position reports?

Offline JetScan1

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Re: Oceanic Clearance Delivery
« Reply #9 on: June 27, 2019, 11:32:03 PM »
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Do you happen to know the appreviation at satradar24 for position reports?

It looks like they are currently only monitoring uplinks to aircraft. They have monitored downlinks from aircraft in the past but I'm not seeing any right now.

There is another website here that is monitoring downlinks. However it's of limited use as the messages quickly scroll off the screen and there is no way to search through them.

http://thebaldgeek.net:2880/ui/#!/4#%2F4

There are many types of position reports, but the most common are ADS (to ATC) and FMS (to company).

eg:

20:11:26 27-06-19 AES:AAA326 GES:02 2 .N785AN ! B6 8 Flight AA36
F87AAA0036/YQXE2YA.ADS.N785AN07217F16F9F3488B8A5E9D0C041333DA08200D216C1F1C71C908874920B60F55554908801006267E5A0103
Basic_Report:
Lat = 47.1042 Long = -46.0634 Alt = 35000 feet. Time past the hour = 11m 04s FOM = 1D
Flight ID AAL36
Next waypoint Lat = 47 Long = -40 Alt = 37000 feet. ETA = 00:31:05
Wind speed = 6 knots. True wind direction = 216 deg. Temperature = -52.75 deg C.

19:49:43 27-06-19 AES:4CA9DF GES:02 2 .EI-EJL ! B6 1 Flight AZ63C
J66AAZ063C/NYCODYA.ADS.EI-EJL14182846AACB09086E401D0D1993BEE39CC9088E3C1AFFBF1C7D490880E623
Waypoint_Change_Event:
Lat = 33.9711 Long = -59.9778 Alt = 36996 feet. Time past the hour = 49m 20s FOM = 1D
Next waypoint Lat = 35.9677 Long = -49.99 Alt = 37000 feet. ETA = 01:00:44

19:54:50 27-06-19 AES:AB2AD8 GES:02 2 .N819AN ! H1 4 Flight AA945
F23AAA0945#M2BPOSN24275W091246,DUTNA,024938,370,ODKOT,025117,AGPOD,M48,31615,1006/TS024938,28061998B8



Offline TonyToronto

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Re: Oceanic Clearance Delivery
« Reply #10 on: June 28, 2019, 09:56:00 AM »
Thanks very much...Tony

Offline Sonic808

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Re: Oceanic Clearance Delivery
« Reply #11 on: August 19, 2019, 07:18:31 PM »

Speaking of trans Atlantic traffic, I would donate funds to get a dedicated feed in CYYT to monitor the Gander Radio frequencies that are used to assign HF frequencies (122.375 and 135.350), plus another one for the high altitude Center frequencies (125.075, 128.175, 132.050, 134.700).

I would also donate funds for additional feeds to split the high and low frequencies in both CYYR and CYFB. The low sectors are very busy at times and block out a lot of the high altitude traffic.

I'm in on that.

https://forums.liveatc.net/listener-forum/freq-request-gander-vhf-oceanic-clearance/msg67434/#msg67434