I found some treasures at an antique flea market.
I think the seller did not know what he was selling at this price after negotiating.
Good for me.
a pair of Arcturus 01a and a pair of De Forest D 01a for a total of 100 EUR
both had a good emission on his tester, but I don't know if it was calibrated.
Will try them soon.
[IMG]
IMG_20230330_154801 by
cgn- dt-n, auf Flickr[/IMG]
[IMG]
IMG_20230330_154820 by
cgn- dt-n, auf Flickr[/IMG]
[IMG]
IMG_20230330_154842 by
cgn- dt-n, auf Flickr[/IMG]