I used to have this recording, but then I lost it somehow. Someone just posted it on twitter. What a treat this is! If you've ver wondered what an old spark rig sounded like (and I had), check this out. A record from around 1938, including spark and also modern state-of-the-art cw transmissions. This is a real treasure and an amazing time capsule.
https://dl.dropbox.com/u/5359633/HobartXmitter.mp3
Fantastic stuff here.
Vy 73,
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Buddy Brannan, KB5ELV - Erie, PA
Phone: (814) 860-3194 or 888-75-BUDDY