Good evening
When I started programming as a student, I used punched cards in a
144K IBM OS/360, where input were punched cards and output was in 132
columns printer paper.
My great advancement was to jump to an OS/370 virtual machine having 1
Mb of virtual RAM, and the magnetic tapes had the astronomic storage
capacity of 300 Mb. Hard disks were of the size of a washing machine
and it was very fast, except when working remotely with 300 bps
modems.
With that hardware, I did performance evaluation of nuclear fuel,
while other people simulated the termomechanical behaviour of fuel
rods, calculated the neutron flux in new nuclear fuel designs, and
calculated by finite elements the stress in rods cladding and
weldings.
Today, I have in my pocket an iPhone with 64 Gb flash memory storage,
running at metheoritic speeds, with an advanced user interface and a
beautiful screen.
I use it daily for playing Solitaire...
73 Dimitri F4DYT
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Le ven. 4 d¨¦c. 2020 ¨¤ 17:37, Jim Shorney <jshorney@...> a ¨¦crit :
Been there, done that. Regency "Touch" series scanners had a particularly strong LO leakage and were common as dirt around here for a while because every LEO vehicle used to have one and they all anded up at surplus auctions.
73
-Jim
NU0C
On Fri, 04 Dec 2020 06:42:49 -0800
"Mark KA2QFX" <ka2qfx@...> wrote:
Back in the day when I hadn't two nickels for equipment I used a cheap handheld scanner as a signal generator. Using the Local Oscillator (LO) leakage I just added (or subtracted as the case may be) the IF frequency to the display value to program the frequency.
