[Moon-net] Lifetime of GS35B, result...

[Bodo Heyl]

Hello,

here the outcome of my mini-survey:

I received in total 8 mails resp. infos.

Three mentioned that their GS35 failed after a short while, reason
unknown.

Five informed me about service since years, no detoriaton etc.
Typical statement is:
So long the tube is operated within the specs, the GS35 is nearly 
indistructable....
(We say in german unkaputtbar..)

One interesting comment from  Mike, KL6M:

quote "K1FO and N8CQ recent theory is that most folks do not bother to 
neutralize the tube
which can result in operating conditions that will reduce the life of the 
tube. And:
The method K1FO suggested to neutralize is to install the tube by mounting 
the
grid ring in finger stock, and removing some of the fingers.
Which fingers to remove I do not recall, and it varies depending on the 
design frequency
of the amplifier." unquote

Many thanks for all the mails and infos,

vy 73 de Bodo/DL2FCN