Here it is, a completed version of the simple discrete component code practice oscillator that I promised. I tweaked the circuit just a little bit and made a Manhattan layout that will enable the CPO, a 9 volt battery, and all of the required controls to fit into a standard sized Altoids tin. This CPO [...]
You have to feast your eyes on these wonderful works of art. This gentleman makes gorgeous, functional tube and crystal radios as works of art. He apparently also sells some of the pieces, and considering how nice they are, the prices seem very reasonable. I guess you could say that this is the anti-ugly construction. [...]
Sorry for the lack of updates this week, I've been under the weather and haven't accomplished anything other than dragging my sorry carcass to work. And that was a struggle. Anyway, I found something that might interest you math and computer geeks out there. This website, called Project Euler, presents a series of mathematical challenges [...]
Someone's getting a bit greedy.
This is a reply that I wrote in response to a thread on the "old" QRP-L regarding the dying of ham radio in the US. The post that I was replying to lamented the instant gratification culture that we have developed in the country. I felt that I should stick my reply here on the [...]
I finally got a few days of decent sleep (decent meaning more than 4 hours), so I had a little energy to work on the simple DC transceiver. A few days ago, I got the remainder of the audio chain working. The emitter follower on one of the outputs of the differential mixer was yanked, [...]
I don't know if the guy who created this is a ham (he does say he's an engineer), but it's a neat application of some old-school technology. He uses a PIC 12F510 to output a Hellschreiber modulated square wave right to his PC's sound card line in port. I really get a kick out of [...]
Yes, its a post about another simple, low-performing direct conversion receiver. However, I think that this one is slightly unique. I was inspired to give this a try based on the Flea minimalist transceiver that was introduced on the EMRFD Yahoo group. These little rigs are fun to build in an evening, but just how [...]
