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.
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On Tue, Jul 26, 2022, 19:22 Stephen W9SK <stephen@...> wrote:
I have two different Post slide rules from back in the day, but my most
valued one is specifically designed for electronics formula use by Picket
(reactance, resonance, resistance, etc).
Stephen W9SK
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of KENT
BRITAIN
Sent: Tuesday, July 26, 2022 4:04 PM
To: [email protected]
Subject: Re: [nanovna-users] Antennas
One must wonder if you ever owned a slide rule? hihi
(Still own my eye saving yellow one by Picket)
I recently saw an article for a 20 Meter beam with dimensions in
1/10,000ths of an inch.
Someone needs to slap that lad up side of the head with a K&E slide
rule!Guess he also needed to establish the exact temp the Aluminum should
be at for that measurement.
"Why be approximately correct when you can be precisely wrong!" Tom Clark
W3IWI
For what it's worth, at last count I own 8 Network Analyzers. 3 Nano's on
various work benches and the big one is a 40 GHz HP 8510. That's about 100
kg of analyzer.
On the 3 Nano's I have, one big source of uncertainty are those 50 Ohm
loads. I had those loads on the 8510 and they were pretty bad above a few
Hundred MHz. If you can, I suggest getting a higher quality 50 Ohm load
for your calibrations. The short and open seemed fine. Kent
On Tuesday, July 26, 2022 at 05:00:08 PM CDT, G8DQX list <
list@...> wrote:
And forgets to say whether these are Imperial Gallons (defined as
4.54609l) or Queen Anne (as used in the USA) gallons (defined as 231 cubic
inches—whatever an inch might have been at the time, though today the US
and UK agree that an inch is 25.4 mm by definition—which is
3.785411784l.) [Thus the US gallon is about 83.27% of a UK gallon.]
Yours terribly pedantically,
Robin, G8DQX
