The news, opinions and events of VE3OIJ / VE3EEE

Archive for the Technology category

VE3OIJ

How to use a computer – The Squid Zone

Equipment, Operating, Security, Technology

A good reminder for everyone…

This is a primer for anyone searching the web looking for tips on how to use a computer.  The language is direct, and intended to be clear and unequivocal. 1. A computer is a dangerous power tool, treat it accordingly As computers become ever more a part of everything we do, there is a tendency […]

Source: How to use a computer – The Squid Zone

VE3OIJ

Google thinks deleting is suspicious. – The Squid Zone

General, Security, Technology

Sunday night I was up late.  I wasn’t sleeping and decided to log into GMail to do some clean-up.  This is a regular task for me – I go in, empty the bin, delete old mails, sort the inbox into categories, etc.  I’ve been doing this for years, usually from the same computer at home […]

Source: Google thinks deleting is suspicious. – The Squid Zone

VE3OIJ

Force Apache to use strong cryptography – The Squid Zone

General, Security, Technology

How to modify Apache’s ssl.conf to require TLS 1.2 and strong cryptography.

Source: Force Apache to use strong cryptography – The Squid Zone

VE3OIJ

4 bit computer built from discrete transistors

Equipment, General, Technology

I started this project as an attempt to teach myself about how computers worked. As such comments, useful links, or anything else related would be appreciated. Prior to this my experience in electronics was mostly microcontroller based. The computer is perpetually half done (it could be more it could be less, I only design the logic for the chunk I’m working on) but currently consists of about 300 transistors. I’m pretty sure that the computer follows ‘Harvard architecture’ (corrections welcome) as the RAM and ROM are strictly segregated. 4 bit is used loosely data width is 4 bits but instruction width is 8 bits as some instructions include 4 bit values. some stats: RAM: 16 nybbles (dictated by address register width) ROM: 16 bytes (dictated by program counter width) clock speed: more than one (the computer is currently not clocked as much of the sequential logic has yet to be built)

Source: 4 bit computer built from discrete transistors

VE3OIJ

ARRL Field Day 2015

Clubs, Digital Modes, DX, General, Operating, Technology, Voice Modes

It’s the end of June and that means ARRL Field Day 2015.  Squidette (VA3CEW) and I deployed to the Outlet Beach (FN13jv, right beside Sandbanks Provincial Park) to operate a Field Day station as VE3EEE.

Equipment

We went out with the standard VE3EEE portable pack:

  • Honda EU2000i generator
  • Quad core i7 laptop
  • Yaesu FT-847
  • Begali paddles
  • RigExpert Plus TNC
  • LDG automatic tuner
  • Hy-Gain DP-19D dipole (set for 20m)
  • Buddipole (set for 15 or 40 depending on the time of day)

WX

Cold  and miserable with drizzle for basically the entire time.  That was not fun at all.  Nevertheless, we did have shelter, so it wasn’t the end of the world.

Solar WX

There were geomagnetic storms earlier in the week, but they had pretty much abated.  K-index bounced between 1 and 3.  15m down to 80m seemed to be open.  I listened on 10 and didn’t hear anything, so I didn’t bother with 6m.

Results

We made 72 contacts between 40m, 20m, and 15m, almost all digital although we threw in a few CW and Phone contacts just for good measure.

Social

We also took the time to drive across the county to visit the Quinte ARC Field Day site in Ameliasburg.  It was rainy and miserable there too, but they had a great setup with 4 radios going!

Photos

This is the buddipole set up on a sand dune. The tower isn't quite fully extended due to overhead trees. Nevertheless, it's got a good 5-7m over the ambient ground level.
This is the buddipole set up on a sand dune. The tower isn’t quite fully extended due to overhead trees. Nevertheless, it’s got a good 5-7m over the ambient ground level.
This is the buddipole set up on a sand dune. might be a bit easier to see.
This is the buddipole set up on a sand dune. might be a bit easier to see.
Hy-Gain dipole between trees. Had I planned this better, I'd have picked different trees and maybe gone for 40m.
Hy-Gain dipole between trees. Had I planned this better, I’d have picked different trees and maybe gone for 40m.
Looking northwest along the beach road.
Looking northwest along the beach road.
This is the cabin on the beach while we were setting up. The generator is in front.
This is the cabin on the beach while we were setting up. The generator is in front.
This is the VE3EEE operating position. That's a 27" touch screen on the left, which makes operating the radio a lot like a Star Trek console.
This is the VE3EEE operating position. That’s a 27″ touch screen on the left, which makes operating the radio a lot like a Star Trek console.

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