Many thanks to SWLing Post contributor, Dave Porter, who shares a link to the following site which contains an extensive galley of photos taken at the Rampisham HF transmitting site on October 11, 2003.
Click here to view the gallery.
Thank you for the tip, Dave!
Great seeing these pictures & the Marconi 500KW “senders” Loved seeing the water cooled load & the “notes” of how to calcuate the power. In Marconi New St, HP test we used this principle to calibrate the Tx from 1KW upto 50KW!!