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Category: electronics

Boost amplifier

My R&S signal generator (SMS) is a very nice generator but output power is limited to +13 dBm and sometimes you need more ….

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Author adminPosted on March 27, 2017June 28, 2021Categories electronics, rf

K3NG Keyer

Finally I finished my ‘new’ keyer based upon the famous K3NG design. I used a standard Arduino Uno board and made my own shield and enclosure.

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Author adminPosted on March 23, 2017March 24, 2017Categories electronics, ham

Sequencer

For my 70 cm setup (TS930 – MMT432/28 – LPM432/100) I had the need for a sequencer that generates the proper timing to switch all on/off in the correct order.

Top view sequencer
Top view sequencer

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Author adminPosted on November 2, 2013November 6, 2013Categories electronics, ham

Video Switch for ATV

After being active with ATV on several bands with multiple video sources, I felt the need to have a video switch. With this I do not have to plug one video source to another anymore, it saves time especially when working in a contest.

20131031_082723
Overview of video switch unit.

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Author adminPosted on October 31, 2013November 11, 2013Categories electronics, ham, rf

RF Power Meter

A power meter is almost a necessity when building your RF equipment. Since I did not have one I decided to build one myself.

SAM_0522_2
Analog meter with homemade scale

 

 

 

 

 

 

 

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Author adminPosted on June 16, 2013January 8, 2014Categories electronics, ham, rf

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