[Boatanchors] 100TH and 250TH advice and or comment

[David Hollander]

I have done filament testing in the past year on a large number of 813's 
that were supposed to be good. I have had several fill up with what 
looked like smoke just with filament voltage applied. They went right to 
the trash.

If you see the white on the glass it is usually a gassy tube.

Dave N7RK
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Dave  N7RK          Boatanchors Home Page: http://members.cox.net/n7rk
Phoenix, Arizona         *DXCC Honor Roll*    *WAZ#22 - 75 Meter SSB*

ex-XE2/N7RK, N7RK/ZB2, VK2ERK, ZM0AJN, WB6NRK, WN6IWX

Boatanchor and Antique Radio Collector