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Shortwave receiver – SM0XVM
http://sm0xvm.se/wordpress/tag/shortwave-receiver
Electronics experiments and projects. March 11, 2012. January 11, 2016. Here is my new mixer module. It is a superheterodyne receiver with a 4 pole 10MHz crystal filter. It uses a 10MHz crystal as BFO with the option to solder in a connector for an external MCU controlled BFO. Component side of the mixer module. The RF mixer is on the left with RF in and LO connector. The right side is the IF mixer. Ideas for a new mixer. March 8, 2012. January 11, 2016. The IF filter is a 4 pole crystal ladder filter...
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MCU – SM0XVM
http://sm0xvm.se/wordpress/tag/mcu
Electronics experiments and projects. March 14, 2012. January 11, 2016. I bought an Arduino Uno recently to use when building prototypes. Using MCUs soldered to veroboard is nice, but it is not great for those projects where you just want to try something quickly. Thats where the Arduino comes in handy, now I can wire up something on a breadboard or solder a few things on a veroboard and connect the Arduino to control it. Wortex design by Iceable Themes.
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40M receiver – SM0XVM
http://sm0xvm.se/wordpress/tag/40m-receiver
Electronics experiments and projects. March 11, 2012. January 11, 2016. Here is my new mixer module. It is a superheterodyne receiver with a 4 pole 10MHz crystal filter. It uses a 10MHz crystal as BFO with the option to solder in a connector for an external MCU controlled BFO. Component side of the mixer module. The RF mixer is on the left with RF in and LO connector. The right side is the IF mixer. Ideas for a new mixer. March 8, 2012. January 11, 2016. The IF filter is a 4 pole crystal ladder filter...
sm0xvm.se
Superheterodyne – SM0XVM
http://sm0xvm.se/wordpress/tag/superheterodyne
Electronics experiments and projects. March 11, 2012. January 11, 2016. Here is my new mixer module. It is a superheterodyne receiver with a 4 pole 10MHz crystal filter. It uses a 10MHz crystal as BFO with the option to solder in a connector for an external MCU controlled BFO. Component side of the mixer module. The RF mixer is on the left with RF in and LO connector. The right side is the IF mixer. Ideas for a new mixer. March 8, 2012. January 11, 2016. The IF filter is a 4 pole crystal ladder filter...
sm0xvm.se
Raspberry Pi – SM0XVM
http://sm0xvm.se/wordpress/tag/raspberry-pi
Electronics experiments and projects. July 3, 2012. January 11, 2016. I recently got a Raspberry Pi and I thought I would add a photo of it. I have not yet built anything around it but it boots and I can connect to it using ssh. My plans are to connect it to a dot matrix display that I have lying around here and let it present the weather forecast or something similar. Wortex design by Iceable Themes.
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SA612 – SM0XVM
http://sm0xvm.se/wordpress/tag/sa612
Electronics experiments and projects. March 11, 2012. January 11, 2016. Here is my new mixer module. It is a superheterodyne receiver with a 4 pole 10MHz crystal filter. It uses a 10MHz crystal as BFO with the option to solder in a connector for an external MCU controlled BFO. Component side of the mixer module. The RF mixer is on the left with RF in and LO connector. The right side is the IF mixer. Ideas for a new mixer. March 8, 2012. January 11, 2016. The IF filter is a 4 pole crystal ladder filter...
sm0xvm.se
Electronics – SM0XVM
http://sm0xvm.se/wordpress/category/electronics
Electronics experiments and projects. My own STM32F1 dev board. November 15, 2015. January 11, 2016. My next project is to build a more advanced dev board with a STMF4 cpu and an external SDRAM for more demanding applications. October 20, 2015. January 11, 2016. PCB for my amplifier made by OSH Park. September 22, 2015. January 11, 2016. A new eBay purchase. A 10 MHz rubidium frequency standard fro mStanford Research Systems. It is of course used but it seems to be in good shape. Found on the SRS web site.
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AVR – SM0XVM
http://sm0xvm.se/wordpress/tag/avr
Electronics experiments and projects. March 14, 2012. January 11, 2016. I bought an Arduino Uno recently to use when building prototypes. Using MCUs soldered to veroboard is nice, but it is not great for those projects where you just want to try something quickly. Thats where the Arduino comes in handy, now I can wire up something on a breadboard or solder a few things on a veroboard and connect the Arduino to control it. Wortex design by Iceable Themes.
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Si570 – SM0XVM
http://sm0xvm.se/wordpress/tag/si570
Electronics experiments and projects. March 22, 2012. January 11, 2016. I bought a VFO kit by PA0KLT based on the SI570 from SDR-kits. It was very easy to assemble although I dislike winding the transformer. Here is an image of it completely soldered. I also bought an extra Si570 to use in future projects of my own. And finally, the signal on my oscilloscope. Wortex design by Iceable Themes.