[Boatanchors] OT: info on DA-515/U?

[eugene at hertzmail.com]

Sorry for the off topic post, but I couldn't find
dummyloads at mailman.qth.net hihi

I picked up a DA-515/U DL at a hamfest. I understand it's rated for 600W
continuous, but does anyone know the specs for how long I can run 1KW? I
am looking for the duty cycle (you know, 2 minutes on, 10 minutes off,
etc).

Is there a published rating curve for this? I believe it is equivalent
to the Bird 8401? I could not find the rating curve on bird's website. I
tried to contact bird a month ago but no luck.

Anyone?
Thanks!
Eugene