Re: [drakelist] Electronic air cleaners damage rubber

2006-01-03 Thread Greg


Greg [EMAIL PROTECTED] made an utterance to the drakelist gang
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Ozone is quite poisonous, those air-refresheners produce ions.
One way to create ozone is with a sparkgap, standing next to a sparking
generator you can smell the ozone as well.
Ionized air is simply negativly charged molecules where creating
ozone combines severeal oxygen atoms.
Or someting like that :-)

//Greg

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RE: [drakelist] cleaning copper

2006-01-03 Thread EricJ

EricJ [EMAIL PROTECTED] made an utterance to the drakelist gang
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3M's Tarni-Shield for Copper  Brass (they also make one for silver) gets
very high marks as a safe, non-abrasive cleaner. It also leaves a protective
coat that prevents tarnish for a few months. I tried it on my National SW-54
first which was much cleaner and more tarnish-free (and much older too) than
my Drakes. It doesn't do anything to the corroded areas which is not
surprising since it is basically iron rust coming through. But it does a
nice job of cleaning the copper without damage. It is far easier to apply
and easier to clean off than Flitz. I have no concerns about using the
product and hope to clean my 2-B, 2-C and 2-NT with it soon. It also worked
well on IF cans and tube shields.

3M also makes some anti-tarnish strips. These are paper impregnated with a
chemical that are meant to be stuck in the drawer with jewelry or whatever
you are protecting. I'm going to tape one inside one of the receivers and
see if I can tell any difference after 6 months or so. If it does something
useful, I'll tape one in all the copper chassis rigs.

I live in a major metro area and could not find Tarni-Shield ANYWHERE. I
found Tarnish-X, but I think it is abrasive like Brasso which gives me
uncomfortable flashbacks to my military days. I found the best price on the
Internet at:

https://secure.visi.com/marshawhitney/order/index.php

It was delivered in just a few days and included the Anti-Tarnish strips
free. This stuff isn't cheap, but it should last long enough that the next
generation can clean up the rig you leave them.

Always a pleasure to recommend a vendor that just does what they promise to
do. The drawing of Martha Whitney on the web site looks like my gramma,
but I have no connection to them.

Eric
KE6US
www.ke6us.com

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jason Buchanan
Sent: Tuesday, January 03, 2006 1:55 PM
To: drakelist@www.zerobeat.net
Subject: [drakelist] cleaning copper


Jason Buchanan [EMAIL PROTECTED] made an utterance to the drakelist gang
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hi,

I have the urge to clean my R-4B copper and get the dust and grime off of it
and was wondering the best way to go about this.  There's some corrosion
here and there but the majority of it is clean.  Before I go rubbing around
on it the wrong way could someone point me in the right direction of the
right way?  I read the article on w4bhfn's site for cleaning corrosion with
flitz but I am not quite up to that task yet - I just want to clean the
layer of age off of the areas that are clean.

thanks!

--
73 Jason N1SU

Jason Buchanan - Boxboro, MA
Website: http://n1su.com/

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[drakelist] AC3 vs AC4 ?

2006-01-03 Thread chuck grandgent

chuck grandgent [EMAIL PROTECTED] made an utterance to the drakelist gang
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OK, simple question.
In 25 words or less, what's the diff between AC3 and AC4 ?
I've seen schematics, is the AC4 just a slightly more progressive design ?

Thanx,
   Chuck, K1OM

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Re: [drakelist] AC3 vs AC4 ?

2006-01-03 Thread Garey Barrell


Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang
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Functionally identical.  Electrically almost identical.  Only real 
difference is the age of the components.


14 words, not counting the sig!

73, Garey - K4OAH
Atlanta

Drake C-Line Service Manual
http://www.k4oah.com



chuck grandgent wrote:


chuck grandgent [EMAIL PROTECTED] made an utterance to the drakelist gang
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OK, simple question.
In 25 words or less, what's the diff between AC3 and AC4 ?
I've seen schematics, is the AC4 just a slightly more progressive design ?

Thanx,
  Chuck, K1OM

 


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