I have been sold more than 80 pieces Chinese 3-500C( include this list),do you
have seen somebody complain its quality?
Yes, some of Chinese tube with some problem indeed, but not ALL,and not
include some old tubes( maunfact for very long time). Some "Jan" glass and
cermic-metal tube for example, FU-100F(4CX1000A),fU-728,FU-101(4CX5000X)
,FU-33(833A) are reliable,because most of them was used in Chinese military
equipment.
73! Hsu
----- Original Message -----
From: <Gudguyham@aol.com>
To: <PlanerGuy@aol.com>; <w8ji@w8ji.com>; <carlseye@verizon.net>;
<amps@contesting.com>
Sent: Wednesday, July 25, 2007 10:19 AM
Subject: Re: [Amps] amps?
>
>
> In a message dated 7/24/2007 10:08:57 P.M. Eastern Daylight Time,
> PlanerGuy@aol.com writes:
>
> Or is my premise incorrect, and ALL Chinese tubes are junk?
>
> Kevin
>
>
>
> Kevin, I have been buying and using RF Parts 3-500Z tubes for the last 7
> years in my SB-220 6 meter conversions. Must have bought 20 sets of them
> and
> never had a problem. They are stable and make as much output on 6 meters as
> they do on 80 meters. Don't know the long run on them, but they do perform
> well. In an SB-220 it is really hard to kill 3-500's because they really
> don't
> run them up all the way. the average SB-220 does about 1100 to 1200 watts
> out with 100 in. They can do 25% more output as shown by Henry and
> Ameritron,
> so in an SB-220 they last along time. Many SB-220's still have original
> tubes still making maximum power output. Lou
>
>
>
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