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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 […]

QRSS10 & WSPR dual transmission last night.

Due the lack of public MF grabbers on the net, last night I’ve tried to receive my signal in qrss10 with remote WebSDR system. I alternated the two transmission mode so to have an idea about where my signals were received.

With great surprise receiving myself on Twente WebSDR my signal was audible and even […]

3rd August solar storm MF observation

For the expected solar storm of last 3rd August, I’ve planned a continuous 72 hours transmission of my MF station as QRSS10 beacon since 1st of August afternoon. I’ve monitored my signal on the MF grabber of Stefan DL7FC, comparing it with IQ2MI signal, downloading for the 72 hours a picture any 10 […]

Increasing TX antenna capacitance

This is my umpteenth upgrade to the TX antenna to try to get better general performance and get the possibility to work on 136 kHz without tons of electrical wires outside the terrace. The new layout is drawn in the next basic picture: I’ve passed from 4 top wire and a single vertical […]

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 […]

A little upgrade to the 630m TX antenna

To make a clean sweep of spagetti wires on the bottom of the antenna, to make my XYL happier, i tought to use the aluminium strip for the first section of the TX antenna.

After removed copper wires I connected the variometer to an old 4 el triband yagi for HF aluminium boom by a […]

Remoting RX – IK0VVE/0

Because of strong noise at home, in these nights I’m receiving MF signals from Monte Ripoli remote station. There the noise is very low and I can dispose of good performance antennas, not MF/LF dedicated for the moment.

Here is a screenshot of my signal (on the left) while just some minute before (00:18) the […]

The 630m antenna

In the last weeks I’ve tested a new antenna for 630m band. To have also something usefull for 2200m I’ve built an helical loaded vertical antenna followed by a 3-wires hat, so to have a longer radiator that resonate about on 350 KHz.

The coil was about a 45 meter long 3 cm aluminium […]

Again on the air with WSPR 630m

Tonight was the second night for my new 630 meter antenna test. Thanks to the increase of Lowfers fellows I’ve had the possibility to have more receivers that last year. I’ve been listened by about 40 different stations in more than a dozen of European country.

This image is relative to the night between […]

Wideband Active Small Magnetic Loop Antenna – updated

Wandering on the Internet I found an interesting LZ1AQ kit about a broadband antenna amplifier for small antennas.

I immediately felt that it was a great product also saw the multitude of schemes and research carried out by Chevdar. I then bought a kit AAA and started with the construction of the antenna. These […]