Originally Posted by R651400
I'm very grateful to the American who modified his transistor receiver to receive and record this unique part of RO history.
Let's face it to catch EJK/Valentia and ICB/Genoa in almost the same breath in my humble opinion is unique.
I think it amazing that when working CW in difficult and crowded conditions, and despite narrower filters with very sharp skirts and latterly variable digital filters, the main discriminator for resolving wanted transmissions was the operators ears and brain. I know not strictly 500 Kcs but never the less an amazing feat in an advanced technical age. Just thought I'd mention it.