Intro

tbd

 

10MHz low pass filter

IMG 2621 IMG 2621 IMG 2621

Transmission filter plot 

IMG 2621

Leo Bodnar GPSDO

Output from GPSDO

Spectrum plot IMG 2621 

Scope plot DS2 QuickPrint1  Remark: Voltages must be divided by 10

After filter

Spectrum plot IMG 2621 

Scope plot DS2 QuickPrint2 Remark: Voltages must be divided by 10

After filter - swapped output-input

IMG 2621

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

Regular supporter of wikimedia