Test setup

MA1

I made some measurements using my miniVNApro with a simple test fixture fittig the QRP labs lowpass filters.

 

MA2

 

Bandpass filters

I've measured all low-pass filters in the shown test fixture. They show a pretty good attenuation. The first harmonic is suppressed more than 32dBc on all filters. Check also the resulting transmitter signal here.

60m

 

VNA 170127 152451

 

2014 CW (Morse Telegraphy) was added to the German Nationwide Inventory of Intangible Cultural Heritage.

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