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Sunday, April 22, 2012

30th Birthday for the TRS-80 Model 100


We have one of these (I'm sure many of you guys have one also).  I'm not really a computer guy, but I've been holding onto this thing because 1) it has always seemed to me to have a very high "cool tech" feel to it and 2) I figured that Billy or Maria might someday take an interest.  Billy is now deep into his PC build, and is developing what looks like a computer-focused shack up in his room.  So the Model 100 has moved up there.  


Here is a nice interview about this machine:
 
http://www.thepowerbase.com/2012/04/trs-80-model-100-interview-with-john-r-hogerhuis/

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

Wednesday, April 18, 2012

Shuttle Discovery Arrives in Washington

I was out on the national mall yesterday morning to watch the Shuttle Discovery (atop a 747) fly over Washington DC en route to Dulles Airport and the Smithsonian Museum. Having watched Discovery when it was in orbit it was kind of bittersweet to see it go by this way. The event reminded me of going out to Hyde Park in London to watch the final overflight of the Concorde SSTs.


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

Tuesday, April 10, 2012

Alan Wolke on "Chat with Designers" Tonight!

From the fellows at NJQRP:

This week's session of Chat With The Designers is tomorrow evening(Tuesday), starting at 8pm Eastern (0000z) on Teamspeak. We are in for a real treat this week, as Alan Wolke, W2AEW, a field applications engineer for Tektronix, will be leading the discussion on atopic he is very familiar with ... "Oscilloscope Basics. '' If you watch an electrical engineer tackling a tough design project, or a service engineer troubleshooting a stubborn problem, you¹ll see them grab a scope, fit probes or cables, and start turning knobs and setting switches without ever seeming to glance at the front panel. To these experienced users, the oscilloscope is their most important tool but their minds are focused on solving the problem, not on using the scope. We have a Notes page set up with a terrific presentation that we¹ll betalking to in this session, so be sure you have your browser set to thisduring the discussion as well ... http://www.njqrp.org/teamspeak/Apr10.html

If you¹ve not joined us for past topics, you¹ll find that we have some funin this 1-hour online meeting talking about various technical topics thatare likely of interest to homebrewers and experimenters here in our hamranks. It¹s open for everyone and all you have to do is have the Teamspeakdriver loaded onto your computer. (For guidance on this, see

http://www.njqrp.org/teamspeak/TeamspeakInstructions.html)Looking forward to seeing
(hearing) many of our 30-some regulars, and inviteothers who have not yet joined in on the fun!73, George N2APB& Joe N2CX& Alan Wolke W2AEW
Chat With The Designers ...http://www.njqrp.org/teamspeak/TeamspeakChat.html

(See this page too for past sessions and MP3 podcasts of the audio portionof each week.)PS: If you happen to follow us in our audio podcasts each week, the lastsession on ³Soldering 101² is loaded and available at:http://www.njqrp.org/teamspeak/Mar20.html
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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

Sunday, April 8, 2012

We need more sunspots!

Conditions on 17 meters are bad today. I pulled out my 6 inch reflector telescope to do some troubleshooting on ol' sol. Yea, just as I thought: one measly sunspot. Confirmed by the SOHO image above.
There was a discussion on QRP-L recently about historical solar flux data. I started wondering what the SFI was on the day I was born. A few clicks with google brought the answer: On September 14, 1958 SFI was close to 300. Today it was 94. :-(

Something should be done about this! Write to your Congressman! Demand more solar activity!

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

Thursday, April 5, 2012

Ponderosa Knack! Bonanza Astronomy!

I loved this episode, and I think most of you guys will too. I was alerted to it by an article by famed comet hunter David Levy. Wow! I never would have thought that in a 1962 episode of the cowboy show Bonanza, we would find amateur astronomy and experiments to determine the speed of sound and the speed of light. Amazing. There is no radio in this so it is not really The Knack, but young Mr. Michelson (yes, the Nobel Prize winner) does set up a shack-like workshop and he is trying to measure c. So this is all very Knack-like. There is also a very nice moral to this story, a moral that is related to our notion of an International Brotherhood of Electrical Wizards.
Three cheers for Ben Cartwright!

You can find the episode here. It runs for 48 minutes:
http://www.youtube.com/watch?v=hzPRGV0HbMk

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

EE Web Featured Engineer: Alan Wolke, W2AEW

I really liked this interview with our friend Alan. You can see definite signs of an early case of The Knack here: I was especially impressed by the fact that he made one of his first antennas from wire salvaged from the deflection coil on an old TV. (I took the easy path and chopped up my dad's extension cords!)

I also liked Alan's response to the question about his favorite software tool: "Gee, solder is soft, can we consider that software? I use a lot of that!" This is very reminiscent of a quote from the legendary Bob Pease (colleague of Jim Williams): "My favorite programming language is solder." (That quote was sent to me by Steve WA0PWK. Thanks Steve.)

Lots of good troubleshooting wisdom in this interview, and Alan's enthusiasm for electronics clearly shines through:
http://www.eeweb.com/spotlight/interview-with-alan-wolke


If you're also interested in the field of electronic repairs, visit www.guidetocareereducation.com for a list of schools offering electronics and engineering training programs.

Also, be sure to check out Alan's YouTube videos, especially those on how to use an oscilloscope:
http://www.youtube.com/user/w2aew
 
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

Tuesday, April 3, 2012

"An Analog Life" A Video Tribute to Jim Williams



Yi Yao alerted us to this. Don't miss this one!


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