[Amps] Penta 3CX1500A7/8877

[gudguyham at aol.com]

A good 8877 can easily go 20 years from the last use to the next, however if you want to be sure just run filament only for 24 hours before plate voltage. Can’t hurt.


Sent from the all new AOL app for iOS


On Friday, June 28, 2024, 10:05 AM, Jim Monahan <k1px at msn.com> wrote:

I just bought a new (sealed in the box) Penta 8877 that has a data sheet
indicating it was built and tested 6/13 - 11 years ago.

My search reveals some conflicting information about starting
this tube.

Any advice would be appreciated and thanks!

Jim, K1PX

K1PX at msn.com
_______________________________________________
Amps mailing list
Amps at contesting.com
http://lists.contesting.com/mailman/listinfo/amps