6L6 Transmitter

Here is a transmitter built in 2000. It uses a 6L6 with a 6X5 rectifier and a 0D3 voltage regulator tube on the screen. The power output is only about 5 watts. It can go almost twice that by pulling out the 0D3, but the keying is not as good that way. It is built on a 8 x 8 inch baking pan that I picked up at the grocery store for $2.
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One Tube Regen Receiver

This is a project I saw in an Elementary Electronics magazine back in 1967. I still have that magazine somewhere and actually remember buying it one Saturday morning at Price Pharmacy (still in business) in my home town. The radio in that article was called “The Neophyte 1.” As soon as I saw the article, I knew I had to build it. Eight years later, in 1975, I finally did.
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PIC Microcontroller Webserver

Web Server for IP Remote Control I’ve been wanting (needing) a way to control and monitor non-internet ready electronic equipment from a distance for a long time. The internet is a great way to do this. Here is a webserver that I made on perfboard that works very well. It has a 10baseT interface that is plenty fast enough to do what I want it to do. There are eight single pole double throw relay circuits, eight on/off inputs, and two analog inputs.
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Reflow Oven Toaster Oven Controller

It looks like everybody is making these things at home, even though you can buy a new Chinese reflow oven on Ebay for less than three hundred dollars. It looks like a good one… all ready to go. But then, I would not have the challenge of making one of my own design. I have never done reflow before but I have soldered smd’s to circuit boards with pretty good success.
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40 Meter Direct Conversion Transceiver

Here is a CW transceiver for 40 meters that uses a direct conversion receiver and puts out 6 watts. I know, it is ugly and it is also simple, as you can see from the schematic below. I built previous receivers using direct conversion and never considered them real contenders until I finally tried using a diode ring product detector. A comparison was made by switching the direct conversion receiver of this rig between the receiver of a Kenwood TS-440S.
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