Oxide cathode tubes like the 8877 are not considered rebuildable, only
thoriated tungsten filament cathode types are.
Some 25 years ago, Econco ran a quality tube rebuilding service, that rebuilt
my then employer's 4CX10000D's for half the price and better performance and
tube life than new OEM tubes. This is however long gone.
Kaput 8877's can be disposed of at the metal recyclers.
They do not, according to the answer from Eimac when I asked about P290A's and
4CX350A's in the late 90's,
contain any dangerous materials such as BeO.
73/
Karl-Arne
SM0AOM
----Ursprungligt meddelande----
Från : ka4inm@gmail.com
Datum : 2017-03-22 - 17:52 (UTC)
Till : amps@contesting.com
Ämne : Re: [Amps] KAPUT 8877'S -DISPOSAL
On 03/22/2017 10:40 AM, Noll W9RN amidzich wrote:
I have (6) 8877s that are no good (kaput).
Reading through the archives there does not appear to be any viable options
for rebuilding.
So.. The $64 question... what is the responsible way to dispose of these
tubes?
Can't see throwing out the tubes with the garbage.
Suggestions much appreciated.
I do not know if 8877s are building rebuilt, but this is how it goes:
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=14&cad=rja&uact=8&ved=0ahUKEwjj_--cyOrSAhUKRyYKHbYKBHY4ChAWCCwwAw&url=http%3A%2F%2Fwww.cpii.com%2Fdocs%2Frelated%2F23%2FThe%2520Tube%2520Rebuilding%2520Process.pdf&usg=AFQjCNERwUb0cIJ271cN2UKe1l-WuA6cWA&bvm=bv.150475504,d.eWE
www.cpii.com/docs/related/23/The%20Tube%20Rebuilding%20Process.pdf
I think triodes are easier to rebuild.