Uploaded February 2017 | Updated September 2026, 2 days ago
I made a small Morse transmitter for 40 meter.
To make is a small as possible I changed the output capacitor for a fixed capacitor.
Now it will fit in a walnut :-)
Useful no, fun YES
Link : qrpme.com/?p=product&id=US4
Link : Schematic - http://animals.home.xs4all.nl/files/The_Walnut_TX_design_PA3DMI_2017.JPG
I made a small Morse transmitter for 40 meter.
To make is a small as possible I changed the output capacitor for a fixed capacitor.
Now it will fit in a walnut :-)
Useful no, fun YES
Link : qrpme.com/?p=product&id=US4
Link : Schematic - http://animals.home.xs4all.nl/files/The_Walnut_TX_design_PA3DMI_2017.JPG
![Bletchley Park Tour [docu in full]](https://i.ytimg.com/vi/OuEHcJ7CCzg/mqdefault.jpg "Bletchley Park Tour [docu in full]
Bletchley Park is an estate located in the town of Bletchley, in Buckinghamshire, England, which currently houses the National Codes Centre and the National Museum of Computing.
During World War II, Bletchley Park was the site of the United Kingdoms main decryption establishment, the Government Code and Cypher School (GC&CS), where ciphers and codes of several Axis countries were decrypted, most importantly the ciphers generated by the German Enigma and Lorenz machines.
Bletchley Park tour [ docu in full ]
Your presenter Linden Stead
1. The early days
2. Station X - The First breakthrough
3. Enigma revisited
4. The Bombe machine
5. The Lorenz and Baudot code
6. Breaking Lorenz - The Germans mistake
7. Tunny and Robinson
8. Colossus
9. The final chapter
Link : http://www.bletchleypark.org.uk/
Link : Linden Stead - http://twitter.com/#!/stratman1
Link : http://en.wikipedia.org/wiki/Bletchley_Park")
