Author Topic: SHANNON HIGH DOWN-ANY UPDATES  (Read 23243 times)

Offline JetScan1

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Re: SHANNON HIGH DOWN-ANY UPDATES
« Reply #25 on: February 22, 2017, 11:41:59 AM »
dave,

Nice to have the feed back, thanks !

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Current frequency list updated.

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Shannon Clearance (Oceanic only)   121.700
Shannon Control   119.075
Shannon Control   134.260
Shannon Control   134.630
Shannon Control (BABAN/DEVOL Sector)   132.150
Shannon Control (Cork Sector)   131.150
Shannon Control (Shannon Sector)   134.280
Shannon Control (SOTA Sector)   135.600
Shannon Control NOTA   122.980
Shannon Control NOTA   125.875
Shannon High Level (SOTA Sector)   135.230
Shanwick Radio   127.650
Track Information   133.800

Just curious what reference you found for the frequencies ? And how close is the frequency list to what is actually on the radio ?

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This one is supposed to be focused only on high altitude frequencies

I'm not complaining, great feed. Just an observation, I notice you appear to have the low frequency 124.70 on the radio (not listed) and 119.075 that is listed is also a low sector.

And FYI a couple of active high frequencies that are not on your list, 136.255 and 120.040 that I heard in use today. 136.255 in the same area as 134.260, might be a spare frequency or an ultra high sector ? 120.040 in the LIMRI area. There is also 127.130 that have heard in use in the past in the SOTA Sector that shows up on some lists as a backup frequency.   

Any chance you or anyone can confirm what frequencies we are hearing the controllers on ? Sounds like 131.150 and 132.150 and maybe 135.600 too ?   

JS

Offline BigBossRadio

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Re: SHANNON HIGH DOWN-ANY UPDATES
« Reply #26 on: February 22, 2017, 02:01:00 PM »
Fantastic job Dave

Say a big thanks to all involved who helped with this important ATC Center
Ps I did send a donation

Offline scubarrie

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Re: SHANNON HIGH DOWN-ANY UPDATES
« Reply #27 on: February 23, 2017, 08:02:33 AM »
Hi Dave,

Great job getting this back up. Here are some frequencies I've overheard in the last couple of days:
120.040 Shannon,
124.700 Shannon,
123.950 Unknown.

Would HF frequencies be of any use?


Offline JetScan1

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Re: SHANNON HIGH DOWN-ANY UPDATES
« Reply #28 on: February 23, 2017, 07:51:03 PM »
Just found this website  (to see all listings use scroll bar on left)  ....

http://gis.icao.int/ff1/FindRegional_Country.php?back=Back&region=EUR&FindCountry=IRL

Appears to have been updated in 2016 and from the frequencies I have heard in use looks accurate.

Shannon ACC

High Altitude

Frequency = sector/area, (status, if heard in use recently), coordinates listed

120.040 = U1+U2+U3+UEXT, (confirmed), N52 42 W008 55 (SNN airport)
122.980 = U4, (NOTA, confirmed, primary), N57 W15 (SUNOT waypoint)
125.875 = U4, (NOTA, confirmed), N52 42 W 006 20 (typo? - 100nm SW of SNN)
127.130 = U1+U2+U3+UEXT, (confirmed), SNN airport
129.665 = U1+U2+U3+U4+U5, (status?), SNN airport
131.150 = U3, (confirmed, primary), SNN airport
132.150 = U1+U2+U3, (confirmed, primary), SNN airport
133.360 = U1+U2+U3+U4+U5, (status?), SNN airport
134.260 = U1+U2+U3, (confirmed), SNN airport
134.630 = U1+U2+U3+UEXT, (status?), N54 W15 (DOGAL waypoint)
135.230 = U1+U2+U3+UEXT, (status?), SNN airport
135.600 = U1+U2+U3+UEXT, (SOTA, confirmed, primary), SNN airport
135.730 = U1+U2+U3+UEXT, (status?), N54 W15 (DOGAL waypoint)
135.985 = U1+U2+U3+U4+U5, (status?), SNN airport
136.255 = U1+U2+U3+UEXT, (confirmed, used as sub for 134.260), SNN airport

Low Altitude

118.975 = L1, (spare?), SNN airport
119.075 = L1+L4, (north, confirmed), SNN airport, - however transmitter can be heard on the EIKN LiveATC feed (72nm north of SNN)
124.700 = L4, (south, confirmed), SNN airport
127.500 = L1, (south, confirmed), SNN airport
129.300 = L4, (spare?), SNN airport

Other

124.175 = Oceanic (status?)
127.900 = Oceanic (status?)
131.825 = datalink ACARS
136.975 = datalink VDL

Trying to make sense of the "remarks" that appear to relate to sectors or areas, ie: "U4" corresponds with northern NOTA sectors and "U3" with 131.150 etc. Not sure what UEXT means ? Sector "U5" corresponds with 3 frequencies I've never heard used before ? Obviously the sector configuration and number of required frequencies varies quite a bit depending on traffic volume and location of the NAT tracks.

Still trying to confirm what transmitters are located in the Shannon area (that you are hearing the controller on), as far as I can tell it's only 131.150 and 132.150 high, and 124.700 low ? The coordinates given by the website don't seem to correspond to transmitter location as most are listed at the Shannon airport (clearly not the case) or some even co-located with navigation waypoints.

The Oceanic frequencies 124.175 and 127.900 were used in the past to assign HF frequencies and voice position reports at 15W, but this is now mostly done with CPDLC, although I have heard some HF frequencies being assigned by ATC on the regular frequencies. So not sure the status of these two anymore ?

Any additional information appreciated.

JS

Offline JetScan1

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Re: SHANNON HIGH DOWN-ANY UPDATES
« Reply #29 on: February 23, 2017, 08:02:59 PM »
scubarrie,

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123.950 Unknown.

123.950 = Shanwick Oceanic Clearance Delivery (only used now by aircraft without CPDLC).

I know they are rare these days but if any of you HF guys happen to be monitoring HF and hear an eastbound Shannon VHF frequency assignment to a non CPDLC aircraft, can you post it here to try and help figure out Shannon frequency usage.

ie: BEDRA eta 0630Z at FL360 to 135.600 Shannon

Thanks,