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MF TX season started!

Last night I’ve been transmitting for the first time after the summer period. A new look to the the TX antenna was made to simplify the shape and get more gain. Now the hat is about 16 meters long and the vertical side is about 9 meters high.

The 6 wires of vertical slope are […]

136 kHz… finally!

Last night was my second “serious” TX test on 136 kHz, transmitted Opera32 mode after an upgrade to the matcher.

To tune the antenna on 136 kHz I’ve build a couple of inductors over two hand cleaner soap bins. The first one was wound with enameled copper wire of about 1 […]

Toroid matching for LF/MF

Since my antenna was born as monoband for 630 meters, until today I’ve used an autotransformer built around the variometer. In these days I’ve tried to tune the antenna on 136 kHz, beginning to put some mH over mH to reach my goal. Arrived to 136 kHz I’ve sadly found that the autotrafo […]