[SFDXA] State of the art QRO

[Bill]

 From Bill NA2M:

Project Tsunami or 3 years of work due to a bet about a crate of 
Bitburger beer

Burkhard, DF5XV, www.classicbroadcast.de, owns a Monster-PA of R&S 
called VK20. The live weight of this PA amounts to 1.6 metric tons, it 
needs a big room on its own with a defined supply and exhaust air and 
its output reaches frightening 20 Kilowatts, even for RTTY. As a driving 
transmitter a R&S SK01 is required. Burkhard has an official permission 
of the BNA for 20 KW on shortwave for broadcast, although not for ham 
radio. Such enormous values of transmitting power challenge even the 
creativity of an experienced high frequency engineer. Well, three years 
ago, the author of this article placed a bet against Burkhard to build a 
power amplified with more than half the output power of the VK20 in SSB 
mode, yet would fit the trunk of a compact car as well as a manageable 
weight. Burkhard's answer: No way! So the race was on!...

Full Article:

http://www.dc9dz.de/en/tsunami.html