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Upgrading to version 0.4.0 fixed this. On connect nvna-s now sets scan range to that set in the device.

https://en.wikipedia.org/wiki/Curta Photos of my Curta calculator in my left hand…

My favorite slide rule precision story: Student doing slide rule on a timed quiz and needs to multiply 2X3. He mumbles, “Two times three is 5.999. Oh Hell, call it six!” Larry AC9OX

Hi Joe Well, typically a dipole at resonance is near 70 Ohms (Resistive), and needs help in some form to get to 50 Ohms. Making the dipole longer, or shorter, Is moving around those complex

OK, how many of you had a Curta calculator? It looked like a black soup can with a crank on the top. You would set numbers on dials and crank the crank until the display stopped changing. That was

I have a Dietzgen rule with "folded" C and D scales which enable reading to 4 decimal places and specialized scales for solving triangles. I also have several circular rules, including some

Guilty as charged! As for finding it again…

Hi Doug, Lots of good advice has already been given about the antenna feedpoint impedance. Here are some important questions about your measurement: 1. Did you measure at the feedpoint? 2. If not, and

This brings me to a thought that I have had for many years.? Just to nit pick a bit more for science, I hear people say that they "cut the dipole to 50 ohm resonance" when in actuality I believe that

I too was once a slide rule user, the Pickett / Collins C-19T. Microwave Path calculation rule. Used it up until the advent of computer calculation programs. Anything's an improvement on doing it

I had a college Slide Rule class after the USAF (1970). The instructor took a full-sized K&E DeciLon and pulled the slide 2/3 out. Then he flexed the two ends down so that it looked like a bow. He

I have one: a Hemmi 153: http://www.followingtherules.info/hemmi-153-scales.html

My sister teaches math at the University of Wisconsin. She has one of those 8 foot slide rules in her office and was taking it to a classroom to demonstrate. A student passed her and said "You know,

I also have some 8' Pickett and K&E instructional sliderules and a dietzen transparent one that goes on an overhead projector - old school all the way ,:)

One more slide rule off-topic, please. I have in my possession a slide rule picked up on the trashbin at Ames Lab IA State.? It is bamboo, and has the note 'This slide rule has been furnished as a

I have a large K&E slide rule that must have 26 or so scales on it. I also have a 6 inch Pickett that we used to call the "Pocket Pickett" :-) Zack W9SZ

You may laugh, but sometimes, small changes in dimensions are important, and therefore so is temperature. For Aluminum, one might see a length change of 0.2% (and corresponding resonant frequency

Hi Scott, As an aside, I have used talc as a lube for bamboo slide rules over the decades. My old Post Versalog II, (with leather case, and both in MINT condition), had small amounts of talc placed in

I collect sliderules. I have approximately 300. Pickets. Post, K&E, Dietzen, Chavez Roos, as well as some unique Russian and Chinese sliderules. My favorite is a K&E 6" Deci-Lon.

Slide rules: https://www.oughtred.org/index.shtml Larry AC9OX