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Herman-calls-CQ
Added: 5th March 2009
Posted By: w4djd
Views: 694
Comments: 0

CQ

Tags: CQ
A-very-special-man
Added: 5th March 2009
Posted By: w4djd
Views: 336
Comments: 0

A-very-special-man

Tags: special man
What the HELL
Added: 8th March 2009
Posted By: w4djd
Views: 561
Comments: 0

What is Hellschreiber. Hellschreiber is a German name, meaning "bright writing", or "clear writing". Hellschreiber is anything but a new mode. It was first patented in 1929 which makes it the oldest machine generated data transmission mode used in amateur radio. To put this in perspective, SSB...

Tags: Hellschreiber K7AGE
The making of radio valves part 3
Added: 9th March 2009
Posted By: w4djd
Views: 261
Comments: 0

The manufacture of thermionic (radio) valves part 3

Tags: radio valves thermionic manufacture
The making of radio valves part 2
Added: 9th March 2009
Posted By: w4djd
Views: 186
Comments: 0

The manufacture of thermionic (radio) valves part 2

Tags: radio valves manufacture thermionic
The making of radio valves part 1
Added: 9th March 2009
Posted By: w4djd
Views: 229
Comments: 0

The manufacture of thermionic (radio) valves part 1

Tags: radio valves manufacture thermionic
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