LiveATC Discussion Forums

Air Traffic Monitoring => Listener Forum => Topic started by: aerobisector309 on January 03, 2020, 04:42:12 AM

Title: Geneva frequencies missing
Post by: aerobisector309 on January 03, 2020, 04:42:12 AM
Hello, it's been a long time since I used LiveATC. When I came back to the website and search for LSGG, only Tower appears. Does anyone know what happened to other frequencies like Arrival and Radar?
Title: Re: Geneva frequencies missing
Post by: quelbazar on January 30, 2020, 09:19:25 AM
LSGG tower is gone too some days ago. No more LSGG  coverage  :-(.
I wrote to LiveATC, using the ad hoc form, a few months ago to offer them coverage of some LSGG frequencies. I never got a response.
So I wrote to them again a few weeks ago: No reply, no acknowledgement.
I admit I'm a bit disappointed: I offer to contribute to liveATC, and nobody takes the time to answer me...
Title: Re: Geneva frequencies missing
Post by: dave on February 22, 2020, 08:22:19 AM
There are no messages from you in our support system. Please PM me offline with a ticket number if you have one. But checking your email address there is no contact.
Title: Re: Geneva frequencies missing
Post by: tamia on March 01, 2020, 02:14:27 PM
If you can please recover the feed, I'll be happy!
Title: Re: Geneva frequencies missing
Post by: Haribda on June 15, 2021, 10:15:15 AM
Any chance to bring back the LSGG feed?
Title: Re: Geneva frequencies missing
Post by: thowe on June 22, 2021, 07:41:14 AM
I am not in the LSGG region but feeder at another airport in Switzerland. If I can support someone in setting up a LiveATC feed, I will be happy to do so. I have quite a lot of experience by now.

Requirements:
- Acceptable reception from ATC and aircraft (ideally also on the ground).
- Raspberry Pi 3 or 4
- Internet connection (cable or wifi)
- SDR dongle(s) (e.g. with a SDRPlay RSP1A you can cover several frequencies at the same time in a range of 7 MHz)

Tom
Title: Re: Geneva frequencies missing
Post by: dave on June 22, 2021, 07:42:21 AM
Thanks, Tom! Hopefully a volunteer near Geneva will show up soon.
Title: Re: Geneva frequencies missing
Post by: thowe on August 23, 2021, 05:23:40 AM
I am currently in contact with someone from the Geneva region who already has an affinity for the topic via ADS-B streaming. Maybe he can get on board with the idea of streaming LiveATC for LSGG. We have a meeting tomorrow.

However, we now have to clarify together his technical possibilities, the suitability of his location, etc. Maybe we start deliberately very small (scanning over several frequencies with an RTL stick) and see from there.

Are there any empirical values, which frequencies were particularly interesting for the airport and which were rather not?
Title: Re: Geneva frequencies missing
Post by: dave on August 23, 2021, 08:30:03 AM
I am currently in contact with someone from the Geneva region who already has an affinity for the topic via ADS-B streaming. Maybe he can get on board with the idea of streaming LiveATC for LSGG. We have a meeting tomorrow.

However, we now have to clarify together his technical possibilities, the suitability of his location, etc. Maybe we start deliberately very small (scanning over several frequencies with an RTL stick) and see from there.

Are there any empirical values, which frequencies were particularly interesting for the airport and which were rather not?

Great! The key issue will be whether he can mount a small VHF antenna outside and also how far he is from the airport and the terrain between his location and the airport. For almost complete frequency coverage it would take 3 SDRs. For a scanning situation one SDR could be used to scan the primary frequencies.

Geneva Clearance: 121.680
Geneva Ground: 121.680 (secondary 119.700)
Geneva Tower: 118.700, 119.905 (secondary 119.700)
Geneva Approach: 130.555
Geneva Final Approach: 120.305
Geneva Transit Approach: 136.450
Geneva Arrival: 136.255
Geneva Departure: 119.530, 131.330

Hope this helps.

Dave


Title: Re: Geneva frequencies missing
Post by: thowe on August 23, 2021, 08:37:04 AM
Thanks Dave. That's a lot of frequencies.... Especially approach frequencies they seem to love.... ;-)

I'll check the points you raised tomorrow in exchange with the colleague.
Title: Re: Geneva frequencies missing
Post by: thowe on August 24, 2021, 03:28:38 AM
The interested person and I have had an initial exchange today. We are now checking the possibilities from his location and will contact you directly as soon as we have streams that are usable.
Title: Re: Geneva frequencies missing
Post by: thowe on August 30, 2021, 03:32:43 PM
Meanwhile, two feeders are preparing to bring LSGG back online. I try to coordinate and support both.

Regarding the frequencies: I think the data you mentioned are the new channels in the 8kHz grid. I.e. these data can be entered exactly like that in the airplane and converted internally by the radio. But if you have to enter the effective frequency like RTLSDR, then the frequencies are sometimes different.

For this reason I would say that the effective frequencies are the following (according to AIP):

Code: [Select]
      freqs = ( 136.450, 136.250, 119.525, 130.550, 120.300, 131.325, 118.700, 119.900, 119.700, 121.675, 121.850, 121.750);
      labels = ( "Transit", "Arrival", "Departure", "Approach", "Final", "Departure Aux", "Tower", "Tower 2", "Tower/Ground Aux", "Ground", "Apron", "Apron Aux");
The feeders will contact you as soon as the setups are ready.
Title: Re: Geneva frequencies missing
Post by: Hiroari_Till_When? on August 31, 2021, 01:10:34 PM
There have to be a lot of approach frequencies in Geneva, the region is packed full of airports, there are several major ones within 150 miles of Geneva, air traffic has to be really, really well monitored. Plus, you've got a lot of different air forces flying in the region, too!