DE N5JC Haven't been on the air for years, but hope to get active again soon. John ... is both a slide rule collector and a ham radio operator. So am I - ...
... The formula for the resonant frequency of a tuned LC circuit is, as of course you well know, 1/(2*pi*sqrt(L*C)). How can this be calculated simply on a...
I have just created a new table in the DATABASE section where you can add: Name Address City State Postal code Country e-mail address Ham call sign. Please...
... is both a slide rule collector and a ham radio operator. So am I - N8XMS - and, like James, I also like to build QRP equipment. How many other hams are...
Mike- Mike Wei asked about scores in the old Texas UIL slide rule competition. Here is what I remember from almost 40 years ago. The max that you could make...
JS> Let's move L on the B scale to the index on the A scale instead. Now, JS> to multiply L by C, we get to find C on the stationary A scale. Below JS> C on...
... Hash: SHA1 Great post, thanks John. FWIW, the 2 pi scale on the Pickett 515 and Cooke's Radio Rule comes in really handy for this kind of calculation. I...
Barbara and John - Absolutely amazing! Thank you very much! My most advanced rule that I will regularly use is a Pickett N3, so I tried the both methods. I...
With all those ham radio operators out there, who can tell me how to use my W&G fv rule shown in the photos section? It's presumably for calculations of...
JB> Barbara and John - JB> I was not raised in the era of the slide rule, so I still need to JB> gain a better understanding of which side of the A/B scales to...
Hello Joe, according to Dieter von Jezierski's slide rule book, Faber-Castell sold a complete slide rule manufacturing unit to the Soviet Union. There are some...
... calculating weights of metal products. It is unusual in that it has two slides. See ebay 3263831726. ... Another unusual aspect of the ebay item is that...
There also appear to have been two different Pickett SRs issued that reference Warren-Knight or WAKCO model numbers (I do not have either one in my collection...
I seem to remember that a few years ago a woman suddenly popped up and bid out other collectors for a lot of high grade SRs on ebay. Was she was an astronomer...
Hi Barbara, Yes, this method works perfectly. I'll certainly need to practice some examples, since there is a lot of steps involving several scales to...
Greetings --- The mystery lady of a few years ago bid on many slide rules under the name "litebkt" ... which hints at "light bucket", a slang name for a large...
... It's probably the same as on the N4: to provide common and natural logs simultaneously. On most rules with log-log scales, the LL scales are exp(x),...
Original message: JB> Hi Barbara, JB> Yes, this method works perfectly. I'll certainly need to practice JB> some examples, since there is a lot of steps...
Barbara, Very nice discussion. I would have to say that, for me at least, multiplying using CI and D is the way to go. Without lack of accuracy, and for the...
Barbara, I am not sure there is any loss of accuracy. You must align one of the terms using the C index and the other using the hairline with the result using...
... Original message: mm> Barbara, I am not sure there is any loss of accuracy. You must align one of the terms mm> using the C index and the other using the...
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sliderule@yahoogroups...
Jan 5, 2004 12:19 pm
Greetings, There are a lot of things we do on this list which may not be obvious to newcomers, and some of us veterans need reminders from time to time, too....
... You are correct that each additional manipulation of a slide rule creates an additional opportunity for error. And, on top of that, there is the question...
Original message: JS> Since the distance between any two numbers on the same scale is the JS> same whether or not the scale is folded, you can certainly...
... It's certainly true that if one is using DI and CIF, one can make the index disappear entirely, such as by multiplying 2 and 1.7. If one multiplies 1.2 and...
You're right, I didn't notice that. But when I tried it, I suddenly realized that the D-CIF combo is really useful for converting radians per second to hertz....
