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Amateur Radio

6 posts in this category

Amateur Radio
TS-50 USB interface
2026-01-13

The original way to interface a TS-50 transceiver to a computer used to be through a serial interface converter. The serial interface has since been replaced with USB ports. Luckily it is even easier …

Amateur Radio
Converting a Ham IV rotator to computer control
2015-11-25

My old Ham-IV rotator has been in storage for a while, but I’m keen on using it again for satellite tracking. Following moving object such as satellites across the sky requires computer control, so I …

Amateur Radio
Replacing a HAM IV rotator display bulb by LEDs
2015-11-17

My 1981 vintage rotator control box blew its display backlight. Instead of searching for a suitable replacement bulb, I decided to replace it with a LED strip. The replacement is quite simple. The …

Amateur Radio
APRS tracker
2014-12-05

This is a small PIC-based APRS tracker that supports the OpenTracker firmware. It has a small integrated 300mW transmitter on-board, and a pin header to connect a GPS module. The tracker is controller …

Amateur Radio
TS-50 serial interface
2005-11-14

This article describes a homebuilt interface for connecting the TS-50 transceiver to a computer using the serial port. Note: this article is depreciated, for a more modern and easier way to interface …

Amateur Radio
My QSL card
2005-10-25

The picture on the front of my QSL card was taken while departing for a DXpedition to Holmön island (EU-135), off the coast of Umea, Sweden. While preparing for the expedition, I was told that the …