15 db improvement on my wifi!

Android tablets have became my primary leisure computing machines, so I’ve been free to migrate from the computer room to my basement mancave, where the TV is larger, and the remote control is MINE. But the wifi was weak/slow, and got worse when my current docsys 3.0 gateway replaced separate modem and router. I knew about wifi extenders, but feared they were difficult to install and sometimes not all that effective. But when I saw that Aldi had one for $19.99, I decided ‘what the heck’. I paid cash, opened the package carefully, and kept the receipt — to facilitate a refund, just in case. I am very pleased.

I downloaded an app to my tablet that made it 1-2-3 easy to wirelessly link the new extender/repeater to my gateway. It even generated an SSID for the additional wifi signal, by adding ‘_Extd’ to mySSID. I regularly use several Android apps, ‘Wifi Analyzer’ to show the signal strength of wifi signals my tablet detects, and ‘Speedtest’ to show the download and upload speeds of the wifi I’m connected to. They both confirm my subjective impressions.

When I connect directly to my router, er gateway, my tablet indicates a ‘Strong’ 26Mbps signal, Wifi Analyzer shows the signal strength is -65db, on channel 1, which is 2412 MHz, and Speedtest indicates about 10 Mbps d/l and 13 Mbps u/l speeds. When I connect instead to _Extd, the extender/repeater, my tablet indates a ‘Very Strong’, 72Mbps signal. More significantly, Wifi Analyzer shows my signal strength improves 15db to -50db, on channel 40, 5200 MHz, and Speedtest shows about 20 Mbps download and 15 Mbps upload.

So how much stronger is a 15db inpovement? 3db is double, 10db is ten times, and 20db is a hundred times stronger — so somewhere between 10x and 100x! It’s the best 20 bucks I’ve spent recently!

–Lucky Luby, aka Steve

 

Spring cleaning . . a little late

My computer is on a lot and I’m a casual housekeeper.  So I clean the computer fans once a year — and today was the day.  I’ve used the same mid-tower case for almost 16 years – started life as a Micron Pentium 90 in 2001.  It has been rebuilt at least 2 times with nothing original remaining.  And I’m thinking it is time gain.  I want a new power supply, motherboard with USB 3.0 capability, more memory and a solid state HD.  Time to do a little shopping . . .

Old - but all working!
Old – but all working!

Last build

Raspberry Pi Has Sold Over 10 Million Units

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Raspberry Pi has achieved a milestone. . over 10 million units sold.  These kits appeal to those that also like things like Legos, Chemistry Kits, and PC Builders.   The Linux based SBC (single board computer) has an amazing track record of uses and projects.

In the UK, “Code Club” is geared to introducing this low cost technology to kids . .

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Since its launch in 2012, Code Club has helped establish over 3,800 clubs in the UK and over 1,000 clubs in 70 other countries. Run by volunteers, Code Clubs focus on giving 9-11 year olds the opportunity to make things with computers. Right now over 44,000 young people regularly attend Code Clubs in the UK alone, around 40% of whom are girls.

Starter kits plus computer sell for about $75 to $125 usd.

See here for more detail:  Continue reading “Raspberry Pi Has Sold Over 10 Million Units”