Re: 810 tubes

• To: tesla-at-pupman-dot-com
• Subject: Re: 810 tubes
• From: "Edward J. Wingate" <ewing7-at-frontiernet-dot-net>
• Date: Sun, 19 Jan 1997 14:45:36 -0500
• Subscriber: ewing7-at-frontiernet-dot-net Sun Jan 19 22:02:30 1997

Tesla List wrote:
> 
> Subscriber: ulflyer-at-juno-dot-com Sat Jan 18 22:35:58 1997
> Date: Sat, 18 Jan 1997 19:59:55 PST
> From: Stephen G Stanton <ulflyer-at-juno-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: 810 tubes
> 
> All:
> 
> The Chinese tubes are generally junk; even at those prices (??) I
> wouldn't waste my time on them;.  They go flat fast.   Save your money
> and use good old USA tubes if you can find 'em.  Eimac is still the
> best.
> 
> Stephen, KJ6LH

Hi Stephen and all,

I can't speak for other Chinese tube numbers or manufacturers, but I
have been using 2 833c's from R.F. Parts in CA. ( the tubes carry the
R.F. Parts brand name) in my vacuum tube coil for the last two years and
they continue to work just fine. In fact it is difficult to get the
plates to glow dull red at 7+ KW. With standard metal plate tubes I have
to monitor the input carefully to avoid melting the center of the
plates. Spark output about 24" in case you were wondering.

Ed Wingate

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