This is wrong!

This is wrong! Very wrong!

A company, run by hams doing things that a ham should not do: calling to punish other hams for what their government is doing!

What if we call for punish against Israelian hams?

What if we call for punish against Argentinian hams?

What if we call for punish against Venezuelan hams?

What if, we call for punish against American hams?

I understand the pain of Ukrainian hams that cannot "cannot go on air or leave the country to visit exhibitions and participate in contests due to the martial law in the country" but to punish other radioamateurs for this unfortunate situation is wrong! Very wrong!

Why not punish the Chinese hams? After all, China is NOT supporting Ukraine!

Or, to simplify, why not punish the hams from ALL countries that not support Ukraine? Because, you know, there are such countries in the World!

Stop doing racist things in ham's world, please!

Home made HF PWR/SWR-meter - revisited

Three years ago I played with a Stockton Bridge and made (just because I had it on my shelf) a nice portable HF power meter and SWR meter with cross-needles.

In the first iteration, it was meant to work with QRP radios; it has an impressive 5-600 mW range but on a second thought, I though what if I can use it for a broader range.

And I put a double potentiometer to change the range. 

But that was not a reliable solution because the range was somehow too "variable" and I never knew the real power.

So, a new iteration was born.

The PWR and the SWR voltage came from the Stockton bridge to a set of 2 x 4 * 1 MOhm potentiometers that will set the range for each position on the switch.

The switch is a dual pole-4 position and the ranges will be 10 W, 50 W, 100W and 200 W.

The calibration was made with a NRP-Z11 power sensor. While it is not a very reliable measurement tool, it helps to see the approximative value of the average or CW power. The 10W scale is pretty precise but the others are not so good.

The values are consistent through 1.5 MHz - 80 MHz.

ADSB on RaspberryPi

 Playing with Raspi and ADSB.

I made a little box to put it on a pole at my second location.

The antenna is a double helix, housed into a PVC pipe.

Testing in Bucharest on the balcony, it looks well!

50-100-150 km range circles.

Note to myself:

Installing rtl-sdr with rtl_tcp.

Installing the Dump1090 - Mutability

Configuration file - good to remember some defaults!

Change settings: sudo dpkg-reconfigure dump1090-mutability

Install FR24 package

Upgrade from mutability v.1.14 to v.1.15

Tweak local OSMap: sudo nano /usr/share/dump1090-mutability/html/config.js

Various interesting things.