airfield comms?

[baksie]

why is the airfield communications on all airfields on the same freq?

Is it possible to change the lua file for online missions and will the online players have to set freq accordingly? Or can this only be done for single player.

[Vaporblast]

I think its written somewhere in the GUI manual how to change frequencies for different airports.

[AlphaOneSix]

Putting all the airfields on one frequency makes radio comms with airfields much easier. it is also not unusual in a combat zone for all airfields to share a single "common air-to-ground" frequency, just to keep things simple. Since the VHF is a line of sight radio, with a fairly limited range, you very rarely (if ever) would run into a situation where two airfields could hear you at the same time. So in the game, it is just assumed that the closest airfield would hear you and respond.

[baksie]

Thanks for the response AlphaOneSix.

It is possbile to change lua file so that online players have to freq or not ?

 

Thanks

Baksie

[yeepeekai]

If you don't already know, you can open the .miz files with winrar (they are simply compressed files).

when you open this files, you can see that you have the directory "scripts", with the directory "world" inside (take an official mission).

 

I've try to put a directory "radio" in it, with a new "beacon.lua" adding a new radio frequency. By this way, I've made my first "zone" on ABRIS, before using the "prepare mission" in the editor ^^. Unfortunatly, this have been not working... no radio station on the frequency I've set...

 

So I don't think that we can change radio station to the client without provided a new "beacon.lua" and overwrite the one on client.

 

someone can even try to confirm ?

[jimiC]

Putting all the airfields on one frequency makes radio comms with airfields much easier. it is also not unusual in a combat zone for all airfields to share a single "common air-to-ground" frequency, just to keep things simple. Since the VHF is a line of sight radio, with a fairly limited range, you very rarely (if ever) would run into a situation where two airfields could hear you at the same time. So in the game, it is just assumed that the closest airfield would hear you and respond.

 

Its more the first point than any others.

Having multiple freqs for all controlled aerodromes would make it necessary for you to access and understand charts and enroute supplements, designated airpsace handbooks etc.

 

VHFs range is actually pretty decent when your talking aircraft. On the ground its about 5km-10km sort of stuff but u get 1000ft in the air and a recvr will pick up your xmit for 50nm no worries. At high level, vhf range is out to about 220nm or 250-270nm over water.

 

Having all controlled aerodromes on the same freq in RL situation would be a recipe for disaster and im pretty certain (and speaking from experience) that any controlled aerodrome will have its own discrete frequency to use that requires a pilot to contact for clearance to enter their controlled tower steps. Any replication of frequencies (both enroute and tower) is done such that theyre at least 300nm apart. An example of what would happen with 1 freq would be melbourne and essendon airports. They are about 3-5nm apart. Aircraft on approach using the same frequency to these 2 airports would end up breaking speration constantly if they were trying to clear landings and departures on it. Pilots would hear multiple ATCs issuing instructions and when i pilot called 'tower' he'd likely get 2 responses.

Pilots both military and civvy (and the military have to operate in the civvy system 95% of the time) will usually have the charts available to look up if they need if theyre too lazy to actually do a full briefing that would involve noting down the freqs required either on a kneepad or on a briefing template notepad.

 

In civvy air control there is a 'common' frequency for uncontrolled aerodromes, usually known as a 'CTAF' which all VFR traffic needs to monitor and broadcast when in vicinity of uncontrolled aerodromes whether overflying in G airpsace or landing/departing.

So in a way the 127.5 freq can be thought of like this if you want to try and inject some realism into it.

but i wouldnt worry about it, its been done for simulation simplicity sake and thats about it.

 

having said that, theyve gone to the effort of putting NDBs (inner and outer, which i can only assume is reference to a localizer rather than a straight up single NDB) in with specific freqs at each aerodrome.

Edited December 7, 2008 by jimiC

[AlphaOneSix]

With regards to a common frequency, there are many FARPs or small airfields in a combat zone that don't exist on charts, and none of them have their own frequency, they listen on a common freq, just like CTAF in the US for uncontrolled airspace that you mentioned. Of course in the game, most airfields are established and probably should have their own charts and freqs, and I have no doubt that there will be mds/addons that add just that sort of thing soon.

[yeepeekai]

Of course in the game, most airfields are established and probably should have their own charts and freqs, and I have no doubt that there will be mds/addons that add just that sort of thing soon.

 

You can do it right now. Changing tower frequency is not difficult.

 

Just open scripts/world/airdromes.lua, and check line 360. Under this line you will have all the available airdromes and if you look frequencies, all have 127500000.0 (mean 127.500). So having all airports with their own frequency is not difficult.

For exemple I have found Anapa tower's frequency : 119.8, Sochi-Adler : 118.3/121.2, Nalchik : 118.3... So you can really put the real frequency without any problems.

 

The only problem is the multiplayer system. By putting the airdromes.lua file in the multiplayer mission file, the client read it's own airdromes.lua, not the one in the mission... that's mean that all client must download the airdromes.lua and put it in the game BEFORE starting the game... that's sad :mad:

 

If a dev can tell us how forcing the client to load the provided scripts, that's will be great !

Edited December 7, 2008 by yeepeekai