[Amps] why 3-500Z?

[John T. M. Lyles]

We have no more good 3-400Z's, a box of duds left. I have 6 sockets 
for these tubes that must operate 24/7 all year, so cannot afford to 
wait for someone to start producing 3-400z again.....

Ciao
John
K5PRO

>On Sep 29, 2005, at 12:26 PM, Peter Chadwick wrote:
>
>>Rich said
>>
>>>In pulse service. 3-500Zs offer virtually no advantage over 3-400Zs.
>>
>>Electrically, this almost certainly true. But how about price and
>>availability?
>
>The issue is about changing out good 3-400Zs for 3-500Zs.