[Milsurplus] Re: Whoops - the cone

[Unserviceable but Repairable]

I called it the "cone of misinformation."  Well probably ture if you're a few hundred feet 
above the verticals.  But if you're up a wavelength or two (1200' +), then you're
off the ends of the verticals & the radio range station DOES go quiet

Think these radio ranges were several miles, maybe five +, away from an airport.
And it was closer-in that marker beacons picked up.

Intreresting to see how marker beacon tech evolved from one to 3 stations.  Outer
marker was 75mhz carrier w. no modulation, middle had 90hz, inner had 150hz modulation.*
Basis for Hank A's amber, green, then red dash lights.  Bug seems to be that
1st generation rxs would light on all three beacons.

Middle marker now gone but we've still got the yellow & red lights (or something).  
By the way, those tones are used for localizer L & R and glide slope Up & Down.  
Y'all might remember this boolah boolah when I discovered why there was such a glut of 
815s in surplus... the BC-400 marker beacon family that WEREN'T surplussed after ww2.

Alzo on the testimony of a ww2 Army Airways alum, Pacific Island arpt.s all had their own
radio ranges.

And we also know they had YG/ZB support, don't we.

Maybe I shud consolidate this & make a 1940s air-nav tech web page... or submit it 
to Wikipedia

Votes?

   o YES
   o Take a hike

  'rm

*Clete, tone freq.s OK?  My understanding's fm ham-hacking a BC-1332(?) 'triple
 threat' marker rx, applying juice & watching it work with a 75mhz sig gen & 
 external modulation.  Thing used 28D7s so no B+ needed.  Discrimination
 about which light selected came from relay wired-or logic.

 & this sig gen brings up another item.  I revived a humble HP 200CD outa "that estate."
 Dang 6-600k hz work of genius.  But front escutceon & dog house awol.  Help out
 there?  This is a problem that WON'T solve with arithmetic