Beautiful British Homebrew (with Valves!)

I was rummaging around the junkbox and I found this gem. I probably bought it at the Kempton Park rally in London. I think it is an AM transmitter for VHF. Maybe 6 meters? Or perhaps that British 70 MHz band? What do you guys think? Can anyone estimate the frequency from the size of the coils?

I think the workmanship is beautiful. The technique of putting the tube sockets on a copper clad board is interesting. I wonder why he did that -- obviously he wasn't afraid of metal work. Look at that cable harness work! FB! It's too bad the builder didn't mark it with his call.

Anyone recognize the design? Any idea when this was built? For bonus points: Who built it?

Our book: "SolderSmoke -- Global Adventures in Wireless Electronics"http://soldersmoke.com/book.htmOur coffee mugs, T-Shirts, bumper stickers: http://www.cafepress.com/SolderSmokeOur Book Store: http://astore.amazon.com/contracross-20

The Antenna that Brought us Apollo 11

July 20/21 seemed like a good day to point to the beautiful shot of the Parkes Radio Telescope Dish, the magnificent Australian antenna that brought us the video from the Apollo 11 moon walk.  Like many of you, I was watching.   Three cheers for The Dish!  Three cheers for Apollo 11!


http://apod.nasa.gov/apod/ap120719.html


As we've mentioned, this antenna and the Apollo 11 reception are the basis of a really nice movie called -- THE DISH.  Get it here:



Our book: "SolderSmoke -- Global Adventures in Wireless Electronics" http://soldersmoke.com/book.htm Our coffee mugs, T-Shirts, bumper stickers: http://www.cafepress.com/SolderSmoke Our Book Store: http://astore.amazon.com/contracross-20

Fire Breathing Billy!

Don't worry.  It's just corn starch.

Our book: "SolderSmoke -- Global Adventures in Wireless Electronics"http://soldersmoke.com/book.htmOur coffee mugs, T-Shirts, bumper stickers: http://www.cafepress.com/SolderSmokeOur Book Store: http://astore.amazon.com/contracross-20

F8VOA's BITX-20 (and FB Workbench)

A beautiful rig on a really nice workbench! http://www.qsl.net/f8voa/
Don't miss the details of the BITX construction. You have to click the little orange arrows along the right of the page: http://www.qsl.net/f8voa/Bitx%20presentation.html

Our book: "SolderSmoke -- Global Adventures in Wireless Electronics"http://soldersmoke.com/book.htmOur coffee mugs, T-Shirts, bumper stickers: http://www.cafepress.com/SolderSmokeOur Book Store: http://astore.amazon.com/contracross-20

Billy got the Arduino going!

LED from AL7RV. Thanks Jim!

Our book: "SolderSmoke -- Global Adventures in Wireless Electronics"http://soldersmoke.com/book.htmOur coffee mugs, T-Shirts, bumper stickers: http://www.cafepress.com/SolderSmokeOur Book Store: http://astore.amazon.com/contracross-20

Homebrew CPU

From the site: I understood these computers well, but the processor itself was still a mystery. I wanted to understand that part too, at the logic gate level. I sometimes thought about making my own processor, and designed small instruction sets and instruction formats. But the task seemed beyond the grasp of a hobbyist such as myself.

http://cpuville.com/index.htm

Note the "Homebuilt CPU Web Ring!" FB!

Our book: "SolderSmoke -- Global Adventures in Wireless Electronics"http://soldersmoke.com/book.htmOur coffee mugs, T-Shirts, bumper stickers: http://www.cafepress.com/SolderSmokeOur Book Store: http://astore.amazon.com/contracross-20

Motor Knack: 11 Months, 3000 Pictures and a lot of coffee

Very nice video. It is comforting to know that we are not alone in our obsession with technology and gear.

Our book: "SolderSmoke -- Global Adventures in Wireless Electronics"http://soldersmoke.com/book.htmOur coffee mugs, T-Shirts, bumper stickers: http://www.cafepress.com/SolderSmokeOur Book Store: http://astore.amazon.com/contracross-20