[Milsurplus] Landing Indicator?

[jmfranke]

The ZA system was the first operational all-weather landing aid.  The ZA 
system used two receivers.  The first was the output from a 190-550 kHz 
command reciver.  This output was filtered to get the 90 & 150 Hz modulation 
for the course needle information.  The second receiver, a ZA 93 MHz 
glideslope receiver, provided vertical needle indication. (see Gordon 
Elliot's article, CQ, October, 1965, 34-37)

John  WA4WDL

----- Original Message ----- 
From: "Dave" <davprin1 at optusnet.com.au>
To: <milsurplus at mailman.qth.net>
Sent: Monday, March 20, 2006 3:51 AM
Subject: [Milsurplus] Landing Indicator?


> Can someone tell me what this dual needle meter was used with, please?
>
> Westinghouse CAY-22318
> Landing Indicator
> Part of Model ZA Equipment
>
> Cheers
> Dave
> VK4KDP
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