And secondly please can you include this feature in SOW.
Ability to do instrument approaches. for bad weather.
For basic IFR aircraft (VDF) voice direction finding. Man in tower gives you direction of you planes from his radio station. we could design our own approach charts and would need the airport elevation , or a QFE altimeter setting.
http://www.atcmuseum.org/Surveillanc...ar_VDF_QGH.asp
For later planes a working ADF/NDB guage, needle- would need radio navigation beacons on maps
Later for the SOW KOREA -- ILS , DME and TACAN beacons and maybe PAR precision approach radar-- full talk down by airfield radar operator to 200 feet or 70 meters
Thanks Oleg