> To: w8jitom@postoffice.worldnet.att.net
> From: philk5pc@connect.net (Phil Clements)
> Cc: amps@contesting.com
> Subject: Re: [AMPS] SB-220
To: <amps@contesting.com>
> Date: Thu, 19 Jun 97 16:12:56 +0000
> That guy chose the wrong tube for his operating style...had he chosen
> 3-500Z, 3-1000Z, oe 4-1000A, he would still most likely be on his
> original set. My comments were strictly limited to the SB-220. All
> bets are off on the ceramic tubes. I still step-start my 8877's, even
> though not required. My line voltage here is high and stiff!
The 3CX1200 series uses the same filament structure as the 3-1000Z,
4-1000A, and similar tubes
Are you saying the type of envelope affects the filament life?
73, Tom W8JI
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