look here. question number 6 :)
http://www.captainsim.org/yabb2/YaBB.pl?num=1318624697

well as for now, i've done some flying since october, its not hard to find intersection of VOR radials. little harder to find intersection of VOR-NDB, but you don't see it often. So its not hard at all if you fly STAR with VOR - VOR intersections. Much harder to fly say YMML STARS. they only got 3 fixes and 1 VOR-DME, so you gotta tie all waypoints to radials of ML VOR plus you gotta use some NDBs. So for every waypoint (ANBEL, VALES, etc) you gotta know bearing to BOL NDB + bearing(radial), and range to ML VOR\DME. you track NDB using RMI, and VOR on HSI. At each waypoint you will cross radial of ML VOR, so if you arriving STAR RNAV BOYSE 5 to land on rwy16, you gotta calculate radials and ranges for BOYSE, VALES, ANBEL, NEFER, BOL(NDB), + bearind to NDB written on map. see pic(graphics crappy but it'll give you idea). and as LOU said you gotta watch HSI,RMI and think fast ))

fly RNAV STARS by radioNAV - thats kinda lot of fun, but im not sure they did it so in 70s :)

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