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Kg3v Ham Radio Blog

A Diary of Technology Persuits

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SO2R

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... Continue Reading →

Using N1MM+ Serial (OTRSP) Data for Two-radio Antenna Switching

I have been investigating ways to automatically switch antennas in a 2-Radio (SO2R) station for use in Contesting. Using multiple antennas is nearly a must for HF contesting, including Yagis, Veticals, and any of a variety of wire antennas. When... Continue Reading →

Using N1MM+ OTRSP Data for Antenna Switching

I have been looking at antenna switches for using two radios with a number of antennas. The common switches I have found are referred to as "Six packs" or 2X6 antenna switches, which establish connections for 2 radios to any... Continue Reading →

DXDUSB Next Version with Custom PC Board – UPDATED

After using some DXDUSB prototypes with DX Doubler SO2R boxes for several months, I finally got around to completing the PC Board layout for the next version. This one will add some power conditioning and choice of operation from +5... 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... Continue Reading →

A USB Interface for the DX Doubler – The Last DXDUSB Prototypes

I have been working on a USB-only interface for the Top Ten Devices DX Doubler for some time. I recently completed the 3rd generation prototype. This is still a prototype - it uses a very small Arduino board with attached... Continue Reading →

DXDUSB DX Doubler USB Interface – 2nd Prototype

The 2nd prototype of the DXDUSB Interface has been completed. I ran it hard through the recent NAQP CW contest, and it did very well. Now it is just a matter of finalizing the software (of course software is never... 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... Continue Reading →

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