This is version 1 of the modified beacons.lua file for NTTR and Caucausus that adds ICLS signals to all airports that had either a ILS or PRMG as default in DCS2.5, as well as TACANs to the majority of the airports in the Caucasus map.  Note, the TACANs used existing radio aids that have been disabled by the addition of the TACANs

This isn't IC compatible. Updates to DCS will overwrite these files. I make no guarantees this will work on your system. Feel free to distribute and use in missions, please give credit for it though.

OVGME install:
OVGME Compatible, drop the Mods folder into your OVGME installation.

Manual Install:
Back up your original first.  Then place the modified beacons.lua file into their respective folders, overwriting the original file.
Caucasus
X:\Eagle Dynamics\DCS[install]\Mods\terrains\Caucasus
NTTR
X:\Eagle Dynamics\DCS[install]\Mods\terrains\Nevada

Version 1 works on my system, Open Beta as of Jan 4, 2019.

Any questions, please contact me at cag@jointopswing.com

TonyG

List of updated airports and NAVAIDs.
Caucasus
Krymsk Tacan 46X KRY
ICLS Runway 04 Channel 4
ICLS  Runway 22 Channel 2

Krasnodar-Center Tacan 94X KRS
ICLS  Runway 09 Channel 9

Maykop Tacan 40X MAY
ICLS Runway 04 Channel 14

Sochi-Adler Tacan 47X SCH
ICLS Runway 06 Channel 6

Mineralnye Vody Tacan 118X MNV
ICLS  Runway 12 Channel 12
ICLS Runway 30 Channel 3

Mozdok Tacan  MOZ 26X
ICLS  Runway 08 Channel 8
ICLS Runway 26 Channel 2

Nalchik Tacan 32X NAL 
ICLS Runway 24 Channel 4  

Belsan Tacan 50X BSN 
ICLS Runway 10 Channel 1 

Senaki 
ICLS Runway 09 Channel 9 

Kultasi 
ICLS Runway 08 Channel 8 

Kobuleti 
ICLS Runway 07 Channel 7 

Batumi 
ICLS Runway 13 Channel 13 

Tblisi-Lochini 
ICLS  Runway 13R Channel 13 
ICLS Runway 31L Channel 6 

Vaziani 
ICLS  Runway 13 Channel 15 
ICLS Runway 31 Channel 4 

Gelendzhik Tacan 90X GNZ
Anapa Tacan 45X

Nevada
Tonopah Test Range 
ICLS Runway 14 Channel 4 
ICLS  Runway 32 Channel 5 

Groom Lake 
ICLS  Runway 32R Channel 9 

Creech AFB
ICLS  Runway 08 Channel 8 
ICLS Runway 13 Channel 13 

North Las Vegas 
ICLS Runway 12L Channel 12 

Nellis AFB
ICLS Runway 21L Channel 1 

McCarran
ICLS  Runway 25L Channel 10 
ICLS Runway 25R Channel 16