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Andy Hume talks about the work he's been involved in on m.guardian.co.uk at Front-end, by Made by Many.
Made on Paper app.
Anna Powell-Smith shares on D3.js, a javascript visualisation library at Front-end, by Made by Many.
front-end-london.eventbrite.com/
Made on Paper app.
A common problem with qrp transceivers is a weak frontend . Most end fed antennas use low pass tuners causing high stress due to strong signals coming from BC stations .
The High pas tuner used here helps to reduce these problems. Put 19 turns 1mm transformer wire on a T130-6 torroid to form a 4.8 uH coil. The trimmer used is a 60pF compression type set to about 25pF . Put a 3.3K resistor between the antenna connector and the ground of the coax connector and tune the trimmer for resonance at 14.180 MHz.for ssb or 14.030 MHz for CW. Keep in mind that a thin antenna wire has a higher Z. Use hot glue to fix the toroid and the trimmer.
After tuning the unit, connect the half Lambda wire ( 10.15m PVC covered stranded copper wire) and cut it for lowest swr. A 1:1.2 swr is easily obtained with this unit. The cabinet is a PVC type G302 made by Velleman. Every end fed / vertical needs some kind of counterpoise to pusch against and in this case that's the coax , so don't forget a line choke near to your transceiver.
Seen on May 29,1993 this is the frontend removed from my friend Bob G's 1986 Lincoln limousine that had an engine fire a year before...he worked on that car until 1996.
My OG ride and my e90.
I got my first car handed down to me when I was 16 from my dad. It was the 1983 528e on the left. I absolutely loved driving it, but MAN does that that thing have problems! ): When I got the car both windshield wipers were broken, the fog lights didn't work, the left headlight didn't work, the tires were bald, there was a hole in the air boot, and coolant tubes the wheels were BMW Bottlecaps. (lol had to get rid of those, it has 17" BBS Style 5's now(: ) etc. etc. no major problems, but you'd be surprised at how quickly all those little parts add up. Before I started driving it I fixed everything myself, along with the help of a couple good friends.
Ever since then i've been saving my $$ for that beautiful e90 on the right. I bought it with 56,000 miles, clean title 6spd manual. So far i've only put 100 miles on it but.. no problems so far (: *knock on wood*
It's currently all stock and it probably will be stock for the next TEN TRILLION years until I can afford to put money into it.
1983-2006
This pseudo-HTTP waterfall mock illustrates a situation which applies to a lot of web sites out there which have legacy code, mixing inline and external script elements and so on.
This was drawn thinking about how inline and external JS (red) elements block and interfere with page load and rendering. We do a pretty good job of "rolling up" our JS, but there is still a lot of up-front time spent in load and parse, which subsequently affects render.
The less script loaded/parsed up front, the faster you should be able to show a page to the user and affect perceived performance, loading, and so on. YUI 3 does a good job of this with their "seed" loader and new asynchronous-based constructor/require() nature.
Needless to say, ideas are being tinkered with.