[time-nuts] modern electronics education/jobs (was:

Rob Sherwood. rob at nc0b.com
Sun Nov 15 11:23:12 EST 2015


A mentor of mine did airplane wiring during WW II. They initially used cable lacing that was likely similar to your Collins method.  What they found was a machine gun bullet that penetrated the airframe caused more damage due to the laced cable bundles. At some point the changed to just laying the cables in the wiring trays. 

(It could have been Korea instead of WW II, but he is SK so I cannot ask him to refresh my memory.). 

Rob, NC0B

Sent from my iPad

> On Nov 15, 2015, at 9:01 AM, "flarsen at yahoo.dk" <flarsen at yahoo.dk> wrote:
> 
> 
> 
> I went to Collins soldering school in the late 1960's. I also learned to tie the special Collins-knot for wrapping wires into neat cable bundles for airplanes, and still remember how to do both.
> I also built a 6-digit clock using TTL chips and nixie tubes in the early 1970's. Looked great and worked well, but kept horrible time ... which let me on a search for a better timebase, with no way to check accuracy, which led me to build a 5-digit frequency counter, also using nixie tubes and with an MK5009N oscillator and timebase. With nothing to compare it to, I started to search for a way to use a local radio station (Kalundborg LW on 245kHz), and later WWVB, for calibration. One project led to another, and eventually landed me on this list.
> And I agree, don't solder in the nude or while wearing shorts, and don't walk barefoot in your workshop.
> 
>      From: Mark Sims <holrum at hotmail.com>
> 
> When I was in high school (early 1970's) I designed and built my own alarm clock out of TTL... (none of that sticking the guts of a commercial alarm clock in a pencil case that get kids arrested today).  Also built my first computer by interfacing a TV Typewriter to a calculator chip.  I was well skilled in the dark arts of soldering (hint: don't solder in the nude) and wire wrapping.
> 
> There is no substitute for hands-on experience, learning, and experimenting (particularly when it comes to soldering in the nude going wrong,  or the subtle wonders of stepping bare foot on a legs-up TO3 power transistor).
> 
> 
> 
> 
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