An SO2R Antenna Switching Project using N1MM

I have decided to revive a project that I started over a year ago, but had put on hold. My Station is setup for SO2R operation but I do not have automated antenna switching in place. I have 3 or 4 antennas, depending upon the contest, and manually connect and disconnect them as the contest... Continue Reading →

Important N1MM+ Antenna Config Changes

I just installed the latest version on N1MM+. I have been looking at using the Antenna Data provided by N1MM+ for controlling my antenna switching. In the latest version, the Change Log shows two changes that were made to the Antenna Configuration table: Alt-F9: Fix issue with 1.8 and 3.5 in Antenna table when country/locale... Continue Reading →

DXDUSB – DX Doubler USB Interface Update

DXDUSB Development Status I have had some requests to provide DXDUSB prototypes to¬† couple people. The latest prototype (Protot3) is still very rough. I have a couple in ongoing testing and they seem to be working well. However, these are very rough - assembly is hand soldered wires attached to the Arduino board. While I... Continue Reading →

USB For DX Doubler First Prototype

I recently completed testing of the first prototype of the USB interface for DX Doubler using N1MM+ software. This was a rough prototype, so it isn't pretty but it does seem to work fine. It currently handles RX and TX Focus, and STEREO for listening to both radios at once. There is an FTDI chip-based... Continue Reading →

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