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ARCHIVE - NOVEMBER 1999

Ian Purdie VK2TIP's FREE monthly newsletter archives from www.electronic-project.com - NOVEMBER 1999

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Hi Gang,

You are receiving this newsletter because you asked to receive it. * Please note: I do NOT sell or rent the email addresses belonging to my subscribers; I respect your privacy!

It might pay you to print this out now - it's as usual, about "I dunno" how many pages long

It does contain VALUABLE INFORMATION - PLEASE READ

Now what's all the news up to the moment? Following our usual format:.

1.     Has this newsletter proved useful?
2.     What I'm personally up to.
3.     Licensing Tutorial Course
4.     Updates and further pages in coming month
5.     Customary damn lies and "statistics"
6.     Feedback
7.     A new valuable download - Go!Zilla
8.     Humour
9.     Using "Super-glue"

1.     Is this Newsletter particularly useful?

YES - it must be. I get a couple of "unsubscribes" a month and they're mostly people losing email access (using boss's email eh!). This is more than offset by the phenomenal growth increase each month. Ahem, I humbly thank you.

2.     What I'm personally up to

Too boring for you but as usual I'm busy
.
3.     Licensing Tutorial Course

The first lessons are now in print on my web site for all to see.

http://my.integritynet.com.au/purdic/aocp_part1a.htm

Part 2 is still incomplete but due for finish shortly.

4.     Updates and further pages in coming month

Hah!, I found out today that part 2 of the Amplifier Design had been sitting happily on the server since 12th July. Nobody could access it though because a certain "Oh Duh!" person put in a bad link. I spoke quite severely to myself. You can now read it at:

http://my.integritynet.com.au/purdic/rf_amp_2.htm

PS: Thanks for the huge amount of feedback here.

There are now three new pages on line. These relate to topics voted the "most asked for":

http://my.integritynet.com.au/purdic/power3.htm

http://my.integritynet.com.au/purdic/power4.htm

http://my.integritynet.com.au/purdic/baluns.htm
 

5.     Damn lies and "statistics"

Well now I've gone past 15,900 unique visitors - that's a jump of I dunno what since last month. Remember these are "uniques". You don't get counted twice or more if you come back the same day or week. (I'm not sure which)

6.     Feedback

Well tell me what you think. Offer suggestions, constructive criticism anything to let me know you are alive and well. Give me a little story about yourself. The most personally rewarding aspect of all this apart from the "thank you's" is the number of fine people with whom I am now friends world wide. And that's really something worthwhile in life.

Speaking of friends how about telling your friends about my site and my monthly newsletter?

Without feedback I don't know where to go.

7.    A real COOL download!

DELETED - No longer supported.

8.     Humour

I was astonished to find people actually missed this segment last month so with permission of the original email writer I have included this absolute gem from the QRP amateur radio group. It relates to extensive discussion on the pro's and cons of using "super glue". Serious discussion on this important topic follows in the next segment:
 

   Subject: OT: Cyanoacrylic Hazard
   Date:  Tue, 12 Oct 1999 18:26:53 -0400
   From: (sender's address deleted)
   To: "Low Power Amateur Radio Discussion" (email address deleted)

I have been reading the posts on the possible fume hazard with cynaoacrylics, but the worse hazard is not paying attention to the warnings.

When the super-glues came into the Federal supply system in 1974, I was portable VQ9C on Diego Garcia.  We had a supply-type that was looking thru the newest listings, and came across the listing for cyanoacrylic. The department had a few bucks to utilize (spelled w-a-s-t-e) before the end of the quarter, so he ordered a couple of tubes.

A few supply flights later, SK2 NoName had his tube of superglue.  At lunch he was looking it over and suddenly said, "It says it'll bond skin instantly!  Who do they think they're kidding?..." and proceeded to stick his index finger to the center of his forehead!

Sickbay could not detach the offending digit safely, so they flew him on one of the VP-Squardron's P-3's (an anti-submarine warfare bird for those not in the know...) to Thailand for surgery.

It was an interesting sight to behold, and very educational for all present!
 

72/73, Keith, WB2VUO, 100% QRP from the Depths of the Great Bergen Swamp
My night light runs more power than my Rig!!!
(and WB2VUO/VQ9C in 1974! QRP from the Posterior of the Indian Ocean, TT
Argonaut 505 and dipoles!)

....ENDS

9.     Using "Super-glue" - Obviously I can not accept responsibility for the following comments. They are reprinted purely for your own information.

A further non-humourous (sober) view on "Super-glue"

Subject: CYA Adhesives (long)
Date:  Wed, 13 Oct 1999 00:06:23 -0500
From: Jeff Logullo (email address deleted)
To: "Low Power Amateur Radio Discussion" (email address deleted)
References: 1 , 2, 3 , 4 , 5 , 6
 

Discussion of "super-glue", used in Manhattan Style construction... unfortunately, I wrote this before I read Roger Hightower's excellent post. (Ian Purdie's comment inserted here - "Roger's post was fine for advanced constructors but I am loathe to reprint it here for safety reasons" - end comment). Laziness and the late hour prevent me from editing out redundant comments; stubbornness made me post it anyway. Delete as desired; enjoy as you will...

I've been using CYA (aka "cyanoacrylate adhesive", aka "super-glue", aka "CA") for years now, in one of my other hobbies--model airplane building. Maybe I can share some tips and tricks I've picked up along
the way. I'm no expert. Your mileage may vary.

Safety
------
First, regarding fumes: conventional wisdom in modeling circles is that the fumes are to be avoided. Some have reported that after working with CYA (and epoxies, too, for that matter), they have experienced allergic reactions. Once sensitized, builders are forever suffering. Itchy eyes, breathing difficulty, red rashes. So--avoid the fumes, and contact with the products.

3M sells several masks that hold filter cartridges--you want the "organic vapor" cartridges. Not only do they spare your nose and lungs when working with CYA, you'll find yourself reaching for them when spray painting or working with other noxious solvents. The cartridges are replaceable, though the originals will last a long, long time. You can find these at any store that sells painting supplies to professional painters; better hardware stores might have 'em, too.

Okay, your respiratory system is safe. What about your eyes? One drop in the eye means a trip to the emergency room, and I hear the news is not good. The simple act of taking off the cap and an accidental squeeze can mean a drop to the eye. Wear goggles.

While picking up goggles at the hardware store, buy a can of acetone, too. Acetone can help remove CYA from your fingers when you glue them together. Yes, sooner or later you will do this. Trust me.

Where to buy
------------
A hardware store is one source, but I have a suggestion: if you have a hobby shop that caters to airplane modelers, stop in. They'll have several brands and varieties, in various sizes.

My main purchase criteria: buy the brand that comes in a bottle with a screw-off nozzle. Buy some extra nozzles and caps. Sooner or later, you'll find the nozzle glued shut. At this point, you can spend a good
half-hour searching for wire thin enough and stiff enough and long enough to try to push the plug out of the nozzle and retrieve it. Or you can cut off the tip, leaving a hole that allows too much CYA to flow
(usually onto your fingers--see above).

CYA comes in several types, usually called "thin", "thick", "gap-filling", etc. The thicker or gap-filling varieties are just that--thicker and more likely to bridge gaps. However, the thicker the CYA, the weaker the bond. The strongest CYA bonds are a mono-molecular layer between two non-porous perfectly-mating surfaces. The larger the gap, the weaker the bond. Obviously, if you are trying to fill a gap with watery thin CYA, you will get no bond whatsoever. So, manufacturers add *stuff* to make the thicker varieties. For Manahattan Style construction, I think the best bonds come from thin CYA, but you should be sure to leave no ridges or humps on the cut edges of your pads. You want a nice flat copper-to-copper mating for pads that stay put.

Some brands offer a line of "odorless" CYA. I have read that they are odorless by virtue of being more pure. They are supposed to be less likely to provoke allergic reactions, and may be stronger. They are also more expensive--of course.

Storage
-------
CYA definitely has a shelf life of a few months. As it ages, it will start to misbehave, taking longer and longer to set. The aging process can be slowed down immensely by storing your CYA in the refrigerator or freezer. Before you put it in cold storage, put the bottle inside a ziplock baggie with as little air as possible. Prior to a CYA session, take the bottle out and let it warm to room temperature WITHOUT removing the bottle from the bag. This keeps condensation from the bottle, and thus keeps water away from the glue--a good thing.

Other Random Thoughts
---------------------
If you start to "get into" CYA (as I have) you should also consider buying a bottle of CYA accelerator. When you spray accelerator onto CYA, it sets up in a *flash*. Many a child's toy has been returned to a few more weeks of service with thick CYA and a spritz of accelerator.

I recommend that you pour some acetone in an olive jar, and soak your dirty tips and caps in there. Put your spare cap on the bottle before you store it. That way you always have a clean tip.

CYA won't stick to everything. Waxy plastics (like polyethylene) will shrug off CYA's advances every time. So will greasy or dirty copperclad. Wash your hands before you start a glue session.

As my chemistry teacher used to tell us when leaving the chem lab, "Washyour hands *before* you go to the bathroom!" 'Nuff said.

Never let children use CYA!

......ENDS

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FINALLY - a little more humour for CW (morse code) enthusiasts

From QRP-L

"I recall a cartoon of a horse (talking) and his rider.

In the desert, the horse sticks two wires into his ears.  They are connected to a telegraph line.

In CW (morse code), the horse hears the word "GOLD".

The rider asks "whadee say, whadee say?"

The horse says "dahdahdit dahdahdah didahdidit dahdidit."

The rider hits the horse over the head with a skillet".

(You have to think about it for awhile)

Thank you all very much and 73's to you all

Ian Purdie
VK2TIP "I'll give you the TIP mate"
Budgewoi N.S.W. Australia
Tel: 61 + 2 + 4399 3228 (2200 - 0800 U.T.C. please.)
QRP-L member #1978.
URL - http://my.integritynet.com.au
 

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the author Ian C. Purdie asserts the moral right to be identified as the author of this web site and all contents herein. All rights reserved. See copying and links. Copyright © 1999  by Ian C. Purdie