[Elecraft] RPN Calc App For Android

[kd4iz at frawg.org]

Fred, Byron,  All,

Fun OT thread! I am looking at my K&E Cooke Radio (Modified Polyphase Duplex Decitrig) and it's manuals... bought at the K&E store in NYC in 1972 while I was at USCG ET "A" School at Governors Island, NY. It still works! 😊 

Next to it is my old Bowmar "Brain" calculator that I acquired a little later... also still works, but only with its power supply. Somewhere along the way there were a half dozen others - none really worth keeping since cell phone apps do the same basic calculations.

I still prefer the slide rule approach because I don't need to judge what number of insignificant digits to discard/round off. LOL

Jack - KD4IZ

-----Original Message-----
From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Fred Jensen
Sent: Saturday, February 5, 2022 22:09
To: Reflector Elecraft <elecraft at mailman.qth.net>
Subject: Re: [Elecraft] RPN Calc App For Android

I still have and use my K&E Log log Duplex Vector ... after all this time, I still remember the motions although I don't remember the formulae.  There's something visual about it

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

Byron Servies wrote on 2/5/2022 2:49 PM:
> On Mon, Jan 31, 2022 at 9:11 AM Clark Macaulay <clark.macaulay at gmail.com> wrote:
>>   Oh, I still have my K&E Log Log Duplex Decitrig slide rule with mahogany rails.  Yup....I'm old.
> For those of us who are younger but find slide rules fascinating, here 
> is a great reference:
>
> http://www.oughtred.org/
>
> Yes, there is a society dedicated to slide rules.
>
> 73, Byron N6NUL



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