AKA "Torpedo Juice"?
> On 07/14/2021 5:04 PM Ed Pflueger wrote:
>
>
> I'm in Kentucky we call it White Lightening. In the Navy we used 190 proof
> to clean the salinity cells.
>
> Ed.. AB4IQ
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
>
From: James Driskell
Sent: Wednesday, July 14, 2021 17:11
To: John Simmons
Subject: Re: [Elecraft] 99.9 % alcohol
Not quite. Denatured alcohol is ethyl alcohol that contains methyl alcohol or
isopropyl alcohol which make the mixture unfit for drinking.
Isopropanol is never denatured because its not consumable by humans. Only
materials that are consumable are denatured, and that is usually done by adding
natural gasoline (pentanes) to make it poison, and this is usually used in the
fuel industry for blending with gasoline. Ethanol
I'm in Kentucky we call it White Lightening. In the Navy we used 190 proof
to clean the salinity cells.
Ed.. AB4IQ
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Simmons
Sent: Wednesday, July 14, 2021 6:51 PM
To:
Anything above 95% or so requires processes beyond just distillation,
i.e. you are getting into the lab grade region. Prices usually go up
significantly for that.
Of course, in many states you can buy 190 proof Everclear (95% grain
alcohol) at a liquor store. Might be easier to find than lab
Here in the USA it is called 'denatured alchohol'. Cheapest to buy in
the paint department of the big-box stores. Or, at the liquor store as
"Everclear" hi hi
-de John NI0K
brianpepperdine brianpepperdine wrote on 7/14/2021 6:41 PM:
I have no idea, obviously, what the USA market offers, but
I have no idea, obviously, what the USA market offers, but here we get 99.9%
(not 90%) isoprophyl alcohol. So much the better re. less residue of course.
Admittedly it was a bit hard to get at the beginning of the pandemic but that
seemed resolved with a couple months.
Ages past I had to ask the
99% Isopropyl is available from Uline. Aerospace industry standard is
Miller-Stephenson Contact Re-Nu MS-530. Evaporates quickly and leaves no
residue. Great stuff but pricey and you'll have to work to find it.
GL - Steve WB6RSE
>
> Yup, it's the 90% stuff. It was impossible to get a year
When I have cleaned boards with IPA or other cleaners, I apply the IPA
only in a small spot with a q-tip and then blot it with a paper towel to
help dry it - do not flood the board.
I generally do not recommend cleaning boards, solder flux is
non-conductive and will normally not cause a
Yup, it's the 90% stuff. It was impossible to get a year ago, but not
too bad now. Still, I had to wait a month or so when I ordered it from
Amazon.
- Jerry KF6VB
On 2021-07-14 16:06, John Marvin wrote:
Hopefully this is obvious, but make sure you are using the 90-91%
Hopefully this is obvious, but make sure you are using the 90-91%
isopropyl alcohol, and not the 70% variety. It can still be hard to get
the 90% variety these days.
73,
John - AC0ZG
On 7/14/2021 4:41 PM, Peter Eijlander (PA0PJE) wrote:
Yes Jerry, isopropyl alcohol does this!
I once cleaned
FYI I ordered a battery kit for my K2 this morning, and the order was marked as
shipped in only a few hours. So the system seems to be working as designed—at
least for stuff that is in stock!
Doug, W0UHU.
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Elecraft mailing list
Home:
Yes Jerry, isopropyl alcohol does this!
I once cleaned a working print of a GPS receiver with isopropyl alcohol
and it stopped working. Letting it be and trying it again next day
turned out it worked perfectly again.
From then on I leave a PCB to rest after cleaning to have the IPA dry
out
Actually, I never suggested a Q for the coil. Al must have been
thinking about somebody else when he said that part, although the rest
of what he attributed to me is accurate. I usually use a Q of 200 for
an air core coil if I'm trying to be conservative, but a Q of 400 is
reasonable if
On 2021-07-07 12:29, Victor Rosenthal 4X6GP wrote:
Remember PTTL?
Poorly Tinned Toroid Leads.
Actually, I suspect that when I scrubbed it with isopropyl alcohol, it
shorted out
one or more high-impedance crystals; because at one point, it was tuning
WWV with no heterodynes - just like an AM
The Drake tuners used a Pi-L circuit topology in which the circulating
current in the inductor is independent of the load impedance. Assuming
almost all the loss is in the inductor, that means that the loss is
independent of the load impedance.
(Another advantage of that topology is you get
You might find some answers here:
https://www.dj0ip.de/antenna-matchboxes/
On the next page he shows all the results from published data.
David G3UNA
> On 14 July 2021 at 07:29 Julia Tuttle wrote:
>
>
> That doesn't actually answer the question "what are manufacturers measuring
> when they
That doesn't actually answer the question "what are manufacturers measuring
when they quote 10:1 matching ability?", and makes a gross and insulting
generalization about the quality of equipment produced for the amateur
radio market.
On Wed, Jul 14, 2021, 01:45 Ray wrote:
> The Statement "This
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