[Milsurplus] Crystal Current - QST article on crystal oscillators.

[Rian Robison]

Hi,

I tried to get this via as listed below and couldn't get there.  I did get it another way.  Here is worked for me....

First, I typed   www.mines.uidaho.edu     and did a search for that which got me to their web site.  On the web page there is text about the university and near the lower right (in the text) it addresses the school of science in colored text.  Second, I click on that text which took me to the home page for their science school section.

Third, I clicked on the title   Physics   (others will most likely work too) in the left column which took me to another page.  On this page I found a picture of a handheld mag glass with the word   Search   next to it in the page banner strip at the top.

Forth, I clicked on the word   Search   and this got me a search page.  I typed into the search entry box   glowbugs/tx/Crystal%20Oscillator%20Article.pdf      and clicked to start search.  This search page returned and had wording listing the article and about it being Adobe, etc.

Fifth, I clicked on the title of the article in the wording on the page referred to above and my Adobe reader opened and down comes the article for reading, printing or saving in the Adobe program screen.


I know this isn't how a real computer expert would do it but after trying several times, I tried this and it worked for me.  For those with March 1950 QST or the QST CD set with March 1950 the article is there.

The article shows using the old pink bead 60 MA pilot lamp as a current meter.  I remember that using them in the xtal circuit as shown when building a 6L6 oscillator or a tri-tet to keep from killing my xtal.  I guess this dates me but it did saved my xtals.  I build a tri-tet with a 6L6 that I bent a rotor plate tip so it would short out the cathode coil when fully meshed to enable the oscillator to run straight through on the xtal freq.  Didn't have a pilot lamp in the circuit the first time and the xtal became many pieces inside a FT-243 holder when tried to run a 40 meter xtal straight through.  My cathode coil was wound on an old 4 pin tube base which I'm sure several others of you remember using too.  Now here I am restoring and operating old military radios and asking myself why someone did that mod, drilled that hole and/or removed that no where to be found part.  Of course, back in the 50s and 60s I was one of those people who either did mods or removed parts for building something else.  I did save some of those specialized parts which I have found quite handy these days.  Boy, I wish I had saved them all instead of helping fill the landfill areas.  You too, huh?  

73,
W6SVU

-----Original Message-----
From: "Kenneth G. Gordon" <kgordon at moscow.com>
Sent: Oct 26, 2005 12:47 PM
To: Milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] Crystal Current - QST article on crystal oscillators.

I didn't mention this last time, but I suppose I should have: the URL is 
as follows:

<http://www.mines.uidaho.edu/~glowbugs/tx/Crystal%20Oscillator%20A 
rticle.pdf>

and includes EVERYTHING between the "<" and the ">". Most e-mail 
readers will cut if off after the "A". Don't leave out the %20s either. That 
is the way some UNIX boxes recognize the "space" character.

Ken W7EKB
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