[Milsurplus] 991 neon lamp addendum

[jcoward5452 at aol.com]

I think the AN/ARC-60 uses a two neon lamp oscillator for the "whistle through" function to set the receiver to the transmitter frequency when useing the UHF transverter.(IMSM).
Jay KE6PPF






-----Original Message-----
From: jcoward5452 at aol.com
To: whitaker at ieee.org
Cc: milsurplus at mailman.qth.net
Sent: Sun, Jan 17, 2010 12:39 pm
Subject: Re: [Milsurplus] 991 neon lamp



When I was in tec school we had to build a "relaxation oscillator" useing two 
E-51's.The really cool thing was when our teacher explained and demonstrated 
he "plasma" state of the gas tube by applying several hundred volts to the 
amp.Nice bright purple color for neon.Dangerous in that it gets hot and has 
otential to explode.Probably illeagle to do that in school now.
ay


-----Original Message-----
rom: C.Whitaker <whitaker at pa.net>
c: milsurplus <milsurplus at mailman.qth.net>
ent: Sun, Jan 17, 2010 8:21 am
ubject: Re: [Milsurplus] 991 neon lamp

e WB2CPN
ve been told that almost any device such as neon lamps
ll oscillate in the RF region if the applied voltage puts them
to what's called Negative Resistance.  Some years ago one
 the ham magazines had a article about using VR-105's
d VR-150's for noise generators.  That's back when we
d our own VHF receiver alignment.   NE-51's also work.
've used NE-51's for interstage coupling on digital circuits.
1's are just bigger and older. 
  Clete
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