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Jan 18, 2023
Category: General
Posted by: lex

I'm now on HamShack Hotline 420-000-0225 (or the short number 84225)

Continue reading . . .  

Dec 25, 2022
Category: General
Posted by: lex

When you want to measure output power and don't have a power or dBm meter, but do have a oscilloscope and a 50 ohm load, you good to go.

Check out this page on which I describe how to do it. 

Continue reading . . . . 

Dec 13, 2022
Category: General
Posted by: lex

I updated the 40dB RF Sampler page because although I was very happy with the result, I found out that I forgot a small thing.

To be exact, a small piece of wire which flattens the curve on higher frequencies. 

Continue reading.....

Dec 3, 2022
Category: General
Posted by: lex

In the winter of 2022 I bought the original TinySA at Eleshop and when they published that the would sell the TinySA Ultra, I ordered it right away.

Continue reading . . . . . 

Oct 6, 2022
Category: General
Posted by: lex

The last weeks I have worked on a few small mini projects :

Jul 31, 2022
Category: General
Posted by: lex

The used Elecraft K2 I got my hands on needed some work on the 20m band and for the alignment of the 20m BPF I could follow the Elecraft manual. But owning a NanoVNA . . . . . well you know where this is going ;-)

 Continue reading   

Jul 30, 2022
Category: General
Posted by: lex

I got my hands on a used Elecraft K2 which needed some work. 

And as always I started working on it and added a usb mod

Jul 12, 2022
Category: General
Posted by: lex

My OZ2CPU digitale RF mW-dBm-mV meter has a  input range from 1nW to 1W which is good enough for QRPp rigs and my TinySA has a imput limit of +10dBm / 10mW.  When you want to measure on equipment which gives more output power, you need a serious set of attenuators, or you could build yourself a 40dB RF sampler.

continue reading . . .  

Jul 5, 2022
Category: General
Posted by: lex

Help spread the word and show your support with these free (vinyl) stickers.

Jul 4, 2022
Category: General
Posted by: lex

On 30 june 2022 I got a mailing from RaspberryPI  store that the Raspberry PI foundation has released a new PI Pico which also includes a wireless module for Wifi and Bluetooth.

So I ordered 4 of them to get myself familiar with this new microcontroller and to do some experiments with it. And 1 day later postman dropped of a package. 

Continue reading . . . .

Jun 28, 2022
Category: General
Posted by: lex

Through this Soldersmoke blog post, I came across this blog post from Owen Duffy ex VK1OD now VK2OMD.

He asked him self  : Are radio hams 'makers' ?

IMHO a valid question on which I given my point of view.  Continue reading . . . . 

Jun 17, 2022
Category: General
Posted by: lex

Early June 2022 I got a e-mail from OM Cor PA4Q that he has visited my website again and he wrote me that he started to make the Anderson PowerPoles his standard connector for all the hamradio devices running on a 12-15V DC. He upgraded his FT817 like I did but he also wanted to upgrade other equipment and for that he needed good chassis parts. In his option (and I agree) these are hard to find or way to expensive. 

Continue reading . . .