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Kg3v Ham Radio Blog

A Diary of Technology Persuits

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Arduino

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 →

Arduino Pro Mini – A Great Tiny Micro Controller

If you have been working with Arduino boards, you may already know about this great little board. The Arduino Pro Mini is about 1.7" X 0.7" in size. It has the normal 14 Digital I/O lines and several analog inputs... 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 →

Remote Rig Access and CW

I have been using my K2 Station remotely, via Internet, for several months now. It works great but I really want to be able to use my keyer instead of a keyboard for CW. I have seen several people talk... Continue Reading →

Remote K2 Power Timeout

Finally completed the power watchdog timer for the K2. This allows me to operate the K2 remotely within compliance of the requirement to have an automated means of shutting down a transmitter if it exceeds 3 minutes on the air.... Continue Reading →

First “Remote” QSO Success

I finally got the Transmit audio interface together and connected and started assembling the "dead man" timer. The timer is required on a remote Ham station to stop a runaway transmitter after it is on the air for 3 minutes.... Continue Reading →

Remote Rig Timeout Controller

To run a Ham Rig remotely, the FCC requires the ability to shutdown a "runaway" transmitter after no more than 3 minutes of activity. There are several ways to do this. My plan is to use a small Arduino computer... Continue Reading →

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