A 20M QRP CW Transceiver built Manhattan Style
My most active project at the moment is an SST for 20 Meters. The SST was designed by Wayne Burdick, N6KR and described in the Spring 1997 issue of QRPp. The SST Kit is commercially available, but I though it would be fun to build one from scratch. A scratch built rig would allow me to freely modify the circuit to meet my needs. Some of the mods are my own but many of them were desrcibed in QRP-L postings compiled by AL7FS and made available on his web site.
This is my third experience with Manhattan construction techniques. I thought it would be fun to try to rough layout before actually building the rig. The graphic above is the result of that work. I used Circad PCB design software and created a few library symbols to make the task easier.
Below are some pictures of the SST under construction and in use. Although I have made about 100 QSOs with the SST as of March 27 2001, it still isn't finished and I keep working on it. I recently developed a keyer and frequency counter for a PIC 16F84 Microcontroller and built that into the SST (see Keyer/AFA project). The next feature I hope to add is an RIT circuit, then I think I will call it finished.
 Milling the board to size |
 VXO Circuit built and oscillating |
 Receiver Section |
 Functional and on the air |
 SST with Keyer/AFA installed |
 SST in Enclosure |
 Operating Mobile with the SST |
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