[Amps] lots of 4CX10,000Ds

[John T. M. Lyles]

Ham friend of mine is the RF engineer for the Haarp site. He travels 
back from Northern VA to Alaska frequently, and also to Continental 
Electronics in Dallas. He can pull up TX stats and meters remotely. I 
have a Haarp QSL card on the wall here, it says 48 phased arrays to 
produce 960 kW ERP from 2.8 to 10 MHz. I heard them on HF (near 5 
MHz) one night, very strange modulation of tones. However, they are 
doing an upgrade with more transmitters and antennae.

http://www.haarp.alaska.edu/

I believe he told me that they use a pair of 4CX10,000D tetrodes in 
each rig, and have 48 of these rigs running. More coming i believe. 
Continental has made a lot of rigs for them, and CPI/Eimac, a lot of 
tubes.
73
John
K5PRO