nanog mailing list archives
Re: akamai yesterday - what in the world was that (now old guy stuff)
From: "Allen McKinley Kitchen (gmail)" <allenmckinleykitchen () gmail com>
Date: Sat, 25 Jan 2020 11:24:49 -0500
On Jan 25, 2020, at 08:52, Paul Nash <paul () nashnetworks ca> wrote:
So, I grew up in South Africa, and one of the more fascinating / cooler things I saw was a modem which would get you ~50bps (bps, not Kbps) over a single strand of barbed wire -- you'd hammer a largish nail into the ground, and clip one alligator[0] clip onto that, and another alligator clip onto the barbed wire. Repeat the process on the other side (up to ~5km away), plug the modems in, and bits would flow... I only saw these used a few times, but always thought they were cool….Do you remember anything about the actual type of modem? Or where you deployed them?
Decades ago, I cobbled together a 20mA current loop interface that may have been an early version of this .. ran a set of Baudot machines (pre-ASCII, upper case & figs only) mostly just to have fun with a set of old ASR 32 teletypes. I used a couple of 500’ spools of zip cord lying on the ground from end to end. Never mind backhoes - it was lawn-mower vulnerable. (However, being flat on the ground seemingly made it less vulnerable to lightning strikes.) Of course, this was hardly critical infrastructure! Blessings.. Allen
Current thread:
- Re: akamai yesterday - what in the world was that, (continued)
- Re: akamai yesterday - what in the world was that Jared Mauch (Jan 23)
- Re: akamai yesterday - what in the world was that Paul Nash (Jan 23)
- Re: akamai yesterday - what in the world was that bzs (Jan 23)
- Re: akamai yesterday - what in the world was that Simon Leinen (Jan 24)
- Re: akamai yesterday - what in the world was that Töma Gavrichenkov (Jan 24)
- Re: akamai yesterday - what in the world was that Niels Bakker (Jan 24)
- RE: akamai yesterday - what in the world was that Aaron Gould (Jan 24)
- Re: akamai yesterday - what in the world was that Warren Kumari (Jan 24)
- RE: akamai yesterday - what in the world was that Aaron Gould (Jan 24)
- Re: akamai yesterday - what in the world was that Paul Nash (Jan 25)
- Re: akamai yesterday - what in the world was that (now old guy stuff) Allen McKinley Kitchen (gmail) (Jan 25)
- Re: akamai yesterday - what in the world was that (now old guy stuff) Ben Cannon (Jan 28)
- Re: akamai yesterday - what in the world was that Valdis Klētnieks (Jan 24)
- Re: akamai yesterday - what in the world was that Nick Hilliard (Jan 25)
- RE: akamai yesterday - what in the world was that bzs (Jan 24)
- Reminiscing our first internet connections (WAS) Re: akamai yesterday - what in the world was that Ben Cannon (Jan 24)
- RE: Reminiscing our first internet connections (WAS) Re: akamai yesterday - what in the world was that Aaron Gould (Jan 25)
- Re: Reminiscing our first internet connections (WAS) Re: akamai yesterday - what in the world was that Karl Auer (Jan 25)
- Re: Reminiscing our first internet connections (WAS) Re: akamai yesterday - what in the world was that Paul Ebersman (Jan 25)
- Re: Reminiscing our first internet connections (WAS) Re: akamai yesterday - what in the world was that bzs (Jan 26)
- Re: Reminiscing our first internet connections (WAS) Re: akamai yesterday - what in the world was that Bruce H McIntosh (Jan 27)