[R-390] OT: HP-410B Tubes

[Steve Byan]

On Mar 4, 2011, at 10:47 PM, Barry wrote:

> One of those Black Beauties was leaking both physically and electrically (it made a pretty nice 82k-ohm resistor...).  I didn't replace them as the newer models didn't include them anyway.


It turns out that both of the ones I clipped out leak only 5 uA at 200 volts; I guess they're good. Time to sell them on ebay to the audio crowd?

Best regards,
-Steve

-- 
Steve Byan <stevebyan at me.com>
Littleton, MA 01460